CN113336597A

CN113336597A - Slow-release and controlled-release eucalyptus weeding medicinal fertilizer granule and preparation method thereof

Info

Publication number: CN113336597A
Application number: CN202110733795.7A
Authority: CN
Inventors: 王超; 方冬林; 杨淑兰; 余青云; 韦茂春; 易芬远; 罗燕梅
Original assignee: Guangxi Sanjing Chemical Science & Technology Co ltd; Guangxi Research Institute of Chemical Industry
Current assignee: Guangxi Sanjing Chemical Science & Technology Co ltd; Guangxi Research Institute of Chemical Industry
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-03

Abstract

本发明公开了一种缓控释桉树除草药肥颗粒及其制备方法，除草药肥颗粒由以下重量份的原料制备而成：环嗪酮0.04‑0.21%、肥料30‑65%、微生物菌剂（有效活菌数≥1000亿cfu/g）0.02‑0.05%、γ‑聚谷氨酸0.2‑0.5%、腐殖酸10‑20%、海藻发酵物5‑10%、包膜剂0.75‑1.2%，余量为辅料。制备方法包括制备药肥核芯、包裹包膜层、包裹包裹土壤改良层。本发明利用药肥互作的原理，根据桉树生长不同时期所需养分特点，将不同类型肥料与具有封闭作用的除草剂活性成分环嗪酮复配使用，结合包衣缓释技术，在满足速生桉植株生长对养分需求的同时，兼顾了控制杂草的效果。The invention discloses slow-release eucalyptus herbicidal fertilizer granules and a preparation method thereof. The herbicidal fertilizer granules are prepared from the following raw materials in parts by weight: 0.04-0.21% of cycloazinone, 30-65% of fertilizer, microbial inoculum (Effective viable count≥100 billion cfu/g) 0.02‑0.05%, γ‑polyglutamic acid 0.2‑0.5%, humic acid 10‑20%, seaweed fermentation product 5‑10%, coating agent 0.75‑1.2 %, the balance is excipients. The preparation method includes preparing a medicinal fertilizer core, wrapping a coating layer, and wrapping a soil improvement layer. The invention utilizes the principle of interaction between medicine and fertilizer, and according to the characteristics of nutrients required by eucalyptus in different periods of growth, different types of fertilizers are used in combination with the herbicide active ingredient cycloazinone with a sealing effect, combined with the coating slow-release technology, to meet the requirements of fast growth. Eucalyptus plant growth requires nutrients while taking into account the effect of weed control.

Description

Slow-release and controlled-release eucalyptus weeding medicinal fertilizer granule and preparation method thereof

Technical Field

The invention relates to the technical field of pesticides, and particularly relates to a controlled-release eucalyptus weeding pesticide-fertilizer granule and a preparation method thereof.

Background

The eucalyptus has the characteristics of strong adaptability, fast growth, barren resistance, strong stress resistance and the like, and is widely planted in the world. At present, eucalyptus has become the main tree species for afforestation in southern areas of China. However, as the growing area of eucalyptus grows larger and the number of successive planting generations increases, the phenomenon that the fertility of soil is not applied is more and more serious. In some areas, due to insufficient land fertility, the eucalyptus is directly caused to generate physiological diseases, and the sustainable management of the eucalyptus artificial forest is directly influenced. Relevant researches show that reasonable fertilization can improve the growth condition of eucalyptus, and the plant height, the breast diameter and the ground diameter are obviously increased. Therefore, reasonable and effective fertilization is one of effective measures for improving the quality of the artificial forest, promoting the fast growth and high yield of the eucalyptus and preventing the decline of the land fertility, and is also one of important means for realizing the sustainable development of the forest land.

Although fertilizers were used in large quantities in the cultivation and planting of eucalyptus in the early 90 s of the 20 th century. However, in the practical application process, problems such as improper fertilizer selection, low fertilizer utilization rate, unsatisfactory fertilizer efficiency and the like exist. Among them, the problems of low fertilizer utilization rate and unsatisfactory fertilizer efficiency are the most prominent. The main reasons are as follows: (1) eucalyptus is mostly planted in areas with fluctuant topography such as mountainous regions, sloping fields and the like, a large amount of rainfall in a short time can cause leaching loss of fertilizer, and nutrients are lost without being absorbed by the eucalyptus in time; (2) the eucalyptus forest is mostly located on hills or hills, the management is relatively extensive, and weeds, miscellaneous irrigation and various vines are easy to overgrow. If these weeds are not controlled in time, a considerable amount of fertilizer is consumed, resulting in waste of fertilizer. Therefore, the method effectively controls weeds and simultaneously prolongs the fertilizer efficiency duration of the fertilizer as far as possible, and is the key for improving the fertilizer utilization rate in the eucalyptus planting process.

The hexazinone belongs to a biocidal herbicide and has low toxicity to people and livestock. Is suitable for tending evergreen coniferous forests, such as young forests of Korean pine, Pinus sylvestris, spruce, Pinus massoniana and the like. Weeding, irrigating, maintaining forest fire-proof lines, forest stand reconstruction and the like before afforestation, and can prevent and kill most monocotyledonous and dicotyledonous weeds and woody plants such as lonicera caprea, Japanese apricot, hazelnut, spiraea salicifolia, acanthopanax, aspen, birch, basswood, northeast China ash, yellow pineapple, walnut fruit and the like. After the herbicide is applied to soil, the herbicide has stable efficacy, is not easy to decompose and has longer lasting period, so the herbicide has a certain sealing effect on weeds and is an excellent effective component of the long-acting forest herbicide.

After the fertilizer is subjected to coating treatment, the nutrient release rate is slower than that of a quick-acting fertilizer or a fertilizer without a coating, the nutrient duration is long, and nutrient loss and waste caused by rainwater, scouring or microbial decomposition due to insufficient absorption of crops after the nutrients are quickly released at one time can be effectively avoided.

Therefore, the controlled-release coating technology is combined with the herbicide and the fertilizer to form the controlled-release herbicide fertilizer, the requirements of eucalyptus forest planting management can be effectively met, and weed prevention and control are achieved while fertilization is carried out. Firstly, the fertilizer utilization rate can be effectively improved, and secondly, the consumption of related manpower, material resources and financial resources caused by weeding can be reduced or avoided. In addition, the microbial agent and the soil conditioner are added into the pesticide-fertilizer particles, so that the effects of effectively improving the soil of the forest land, improving the microbial community structure of the soil and improving the water and fertilizer retention performance of the soil can be achieved.

Disclosure of Invention

The invention overcomes the defects of the existing product, provides the controlled-release eucalyptus weeding medicinal fertilizer granules and the preparation method thereof, and has the advantages of safety, high efficiency, environmental protection, easily obtained raw materials and simple and convenient preparation.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a sustained-release eucalyptus weeding pesticide-fertilizer granule comprises the following components in percentage by mass: 0.04-0.21% of hexazinone, 30-65% of fertilizer, 0.02-0.05% of microbial agent, 0.2-0.5% of gamma-polyglutamic acid, 10-20% of humic acid, 5-10% of seaweed fermentation product, 0.75-1.2% of coating agent and the balance of auxiliary materials.

Further, the herbicide-fertilizer granules comprise a herbicide-fertilizer core, a coating layer and a soil improvement layer which are sequentially arranged from inside to outside, wherein the herbicide-fertilizer core consists of hexazinone, a fertilizer, humic acid, seaweed fermentation products and auxiliary materials; the coating layer comprises a coating agent; the soil improvement layer comprises a microbial agent and gamma-polyglutamic acid.

Further, the fertilizer comprises one or a combination of more of urea, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, potassium chloride, potassium sulfate, monopotassium phosphate and the like. The selection and the proportion of the fertilizer can be adjusted according to the growth period and the growth condition of the eucalyptus.

Further, the auxiliary material comprises one or a mixture of two of a binder and a filler;

the binder is one or a mixture of more of vegetable gum, animal gum and polyethylene glycol;

the filler is one or a mixture of more of kaolin, bentonite and attapulgite.

Further, the coating agent is one or a mixture of more of Arabic gum, polyvinyl alcohol, cyclodextrin, diphenylmethane diisocyanate and polypropylene carbonate.

Further, the mass ratio of the coating agent to the pesticide fertilizer core is controlled to be 1:80-1: 140.

Further, the microbial agent is one or a mixture of more of bacillus subtilis, bacillus licheniformis and bacillus amyloliquefaciens. The effective viable count of the microbial agent is more than or equal to 1000 hundred million cfu/g.

The preparation method of the controlled-release eucalyptus herbicide fertilizer granules comprises the following steps:

A. preparing a pesticide fertilizer core: pulverizing hexazinone, fertilizer, humic acid, seaweed fermentation product and filler, uniformly mixing, adding binder, fully mixing, and slowly adding the materials into a granulator to prepare spherical particles; drying and sieving to obtain pesticide fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving the coating agent by using water or a recyclable volatile organic solvent, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer particles by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer particles;

C. wrapping a soil improvement layer: and C, uniformly mixing the microbial agent, the gamma-polyglutamic acid and a proper amount of water, adding a proper amount of starch, uniformly mixing to obtain a mixture bacterial slurry, uniformly spraying the bacterial slurry on the surface of the coated pesticide-fertilizer particles prepared in the step B by using a boiling drying spraying device, and drying to obtain the controlled-release eucalyptus herbicide-fertilizer particles.

The invention also provides application of the controlled-release eucalyptus herbicide fertilizer granules in eucalyptus planting and weeding.

Further, the application specifically comprises that a crescent fertilizing ditch which is 25-35cm long, 15-25cm wide and 5-8cm deep is arranged at a position 20-50cm away from the root of the fast-growing eucalyptus seedling in the upward slope direction, or a fertilizing ditch which is 40-60cm long, 20-40cm wide and 8-10cm deep is arranged between water dripping lines of old plants, the herbicide fertilizer is scattered into the ditch, and soil is covered; the use amount of the controlled-release eucalyptus herbicide fertilizer granules is calculated by the effective component amount of the hexazinone: eucalyptus seedlings (young forest tending period) 0.2-0.5 g/plant, and older plants 0.6-1.3 g/plant.

In view of the above, the present invention has the following remarkable effects:

(1) according to the invention, the enclosed herbicide hexazinone and the fertilizer are scientifically and reasonably combined together, and a sustained-release coating technology is combined, so that the purpose of normally fertilizing eucalyptus is achieved, various forest weeds can be effectively prevented and removed, the fertilizer loss caused by fertilizer competition between weeds and eucalyptus is reduced, and the effective utilization rate of the fertilizer is improved on the premise of ensuring the safety of the pesticide fertilizer to eucalyptus.

(2) The invention is also provided with a soil improvement layer outside the coating layer. The reasonable addition of the microbial agent, especially bacillus microbe, to the fertilizer can effectively improve the unbalance of soil microbial flora caused by continuous cropping or single planting structure, inhibit soil-borne diseases, activate soil nutrients, and increase the content of effective components in soil, especially the content of medium and trace nutrients. Thereby achieving the soil improvement effects of improving soil flora, increasing soil fertility and the like. The gamma-polyglutamic acid has the characteristics of excellent film forming property, plasticity, cohesiveness, moisture retention, biodegradability and the like, and can be used as a soil humectant and a fertility intensifier, so that the water-storing capacity of soil can be effectively enhanced, the nutrient absorption of crops is promoted, the fertilizer utilization rate is increased, the yield is increased, the quality is improved, and the stress resistance of the crops is improved. The organic combination of the microbial inoculum and the gamma-polyglutamic acid can effectively improve the soil microbial community structure of the eucalyptus woodland and improve the water and fertilizer retention performance of the soil. The microbial agent and the gamma-polyglutamic acid are coated on the outer layer of the pesticide fertilizer, so that the pesticide fertilizer is quickly and fully released, and the application effect is further improved. In addition, the coating layer can effectively isolate the pesticide-fertilizer core from the microbial agent, so that the potential influence of the fertilizer or the active ingredients of the herbicide in the pesticide-fertilizer core on the microbial activity is avoided.

(3) The invention takes the microorganisms, the gamma-polyglutamic acid, the humic acid and the seaweed fermentation product added in the herbicide fertilizer granules as soil conditioners, can effectively improve the soil of the forest land, improve the microbial community structure of the soil and improve the water and fertilizer retention performance of the soil, thereby realizing the effect of one fertilizer with multiple purposes.

(4) Because the herbicide fertilizer granules have better weed control effect and longer weed control time, the management cost of eucalyptus planting managers in the aspect of weeding can be effectively reduced, the purpose of reducing the use amount of pesticide and fertilizer is achieved, and the management of eucalyptus planting, quality improvement and efficiency improvement are effectively assisted.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with reference to the following specific examples, but the present invention is by no means limited to these examples. The following are only preferred embodiments of the present invention, which are intended to illustrate the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The specific preparation method of the seaweed fermentation product used in this example was: mixing kelp, brown algae, gulfweed and other large-scale seaweeds or leftover materials after deep processing with cellulose decomposition bacteria and acidic protein decomposition bacteria, adjusting the carbon-nitrogen ratio to be within the range of 25: 1-30: 1, stacking the materials into a stack, covering a plastic film for anaerobic fermentation, and controlling the stack temperature to be 55-60 ℃ (stack temperature is larger than 60 ℃ and stack turning treatment is carried out). Anaerobic fermentation for about 30-40 days, uncovering the plastic film, exposing the material to air, and performing facultative aerobic fermentation for 10-15 days. After fermentation, drying, dehydrating and crushing the fermented product for later use.

And (3) other raw materials:

the effective viable count of the bacillus subtilis is more than or equal to 1000 hundred million cfu/g; the effective viable count of the bacillus licheniformis is more than or equal to 1000 hundred million cfu/g; the effective viable count of the bacillus mucilaginosus is more than or equal to 1000 hundred million cfu/g;

gamma-polyglutamic acid with molecular weight of 20000.

Example 1

The controlled-release eucalyptus herbicide fertilizer granule comprises the following components in percentage by mass:

component name	Mass percent (%)
		Hexazinones	0.04
Urea	10
		Potassium dihydrogen phosphate	20
Humic acid	10
		Fermented product of seaweed	5
Vegetable gum	2
		Bentonite clay	51.74
Arabic gum	1.0
		Bacillus subtilis	0.02
Gamma-polyglutamic acid	0.2

The preparation method of the controlled-release eucalyptus herbicide fertilizer granule comprises the following steps:

A. preparing a pesticide fertilizer core: the hexazinone, the urea, the monopotassium phosphate, the humic acid, the seaweed fermentation product and the bentonite are crushed and uniformly mixed, then the vegetable gum is added to be used as a binder, and after the mixture is fully mixed, the material is slowly added into a granulator to prepare spherical particles. Boiling, drying and sieving to obtain pesticide fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving Arabic gum with a certain amount of water, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer particles by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer particles;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to the proportion of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus subtilis and the gamma-polyglutamic acid with the mixture to obtain mixture bacterial slurry, and uniformly spraying the bacterial slurry on the surface of the particle prepared in the step (B) by utilizing boiling drying spraying equipment. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =4:11:7, can be used as a base fertilizer for seedling planting, and the using method comprises the following steps: a crescent fertilizing ditch which is 30cm long, 20cm wide and 5-8cm deep is formed at a position 30cm away from the upward slope direction of the roots of the fast-growing eucalyptus seedlings, the weeding pesticide fertilizer is spread in the ditch, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer is 500g per plant, and soil covering is carried out.

Example 2

component name	Mass percent (%)
		Hexazinones	0.08
Ammonium chloride	13
		Monoammonium phosphate	9
Potassium sulfate	13
		Humic acid	12
Fermented product of seaweed	6
		Animal glue	1.5
Bentonite clay	44.3
		Gelatin	0.8
Bacillus licheniformis	0.03
		Gamma-polyglutamic acid	0.3

A. preparing a pesticide fertilizer core: pulverizing hexazinone, ammonium chloride, monoammonium phosphate, potassium sulfate, humic acid, seaweed fermentation product and bentonite, uniformly mixing, adding animal glue as a binder, fully mixing, slowly adding the materials into a granulator to prepare spherical particles, boiling, drying and sieving to obtain medicinal fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving gelatin in a certain amount of water, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer granules by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer granules;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to the proportion of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus licheniformis and the gamma-polyglutamic acid to obtain mixture bacterial slurry, and uniformly spraying the bacterial slurry on the surface of the particle prepared in the step (B) by utilizing boiling drying spraying equipment. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =4:5:7, and the using method comprises the following steps: a crescent fertilizing ditch which is 30cm long, 20cm wide and 5-8cm deep is formed at the position 30cm away from the upward slope direction of the root of the fast-growing eucalyptus seedling, the weeding pesticide fertilizer is scattered in the ditch, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer in the embodiment is 500g per plant, and the soil is covered.

Example 3

component name	Mass percent (%)
		Hexazinones	0.12
Ammonium sulfate	11
		Diammonium phosphate	19
Potassium chloride	10
		Humic acid	14
Fermented product of seaweed	7
		Polyethylene glycol	3
Attapulgite powder	34.24
		Polyvinyl alcohol	1.2
Bacillus mucilaginosus	0.04
		Gamma-polyglutamic acid	0.4

A. preparing a pesticide fertilizer core: pulverizing hexazinone, ammonium sulfate, diammonium phosphate, potassium chloride, humic acid, seaweed fermentation product and attapulgite powder, uniformly mixing, adding polyethylene glycol as a binder, fully mixing, slowly adding the materials into a granulator to prepare spherical particles, and sieving after boiling drying to obtain pesticide-fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving polyvinyl alcohol with a certain amount of hot water, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer particles by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer particles;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to a ratio of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus mucilaginosus, the gamma-polyglutamic acid and a proper amount of water to obtain mixture bacterial pulp, and uniformly spraying the bacterial pulp on the surfaces of the particles prepared in the step (B) by using a boiling drying spraying device. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =6:10:6, can be used as a base fertilizer for seedling planting, and the using method comprises the following steps: a crescent fertilizing ditch which is 30cm long, 20cm wide and 5-8cm deep is formed at the position 30cm away from the upward slope direction of the root of the fast-growing eucalyptus seedling, the weeding pesticide fertilizer is scattered in the ditch, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer in the embodiment is 400g per plant, and the fast-growing eucalyptus seedling is covered with soil.

Example 4

component name	Mass percent (%)
		Hexazinones	0.16
Urea	28
		Potassium sulfate	7
Potassium dihydrogen phosphate	10
		Humic acid	16
Fermented product of seaweed	8
		Vegetable gum	1.5
Animal glue	0.5
		Kaolin clay	20
Bentonite clay	Make up the balance
		Cyclodextrin	0.75
Bacillus subtilis	0.05
		Gamma-polyglutamic acid	0.5

A. preparing a pesticide fertilizer core: pulverizing hexazinone, urea, potassium sulfate, monopotassium phosphate, humic acid, seaweed fermentation product, kaolin and bentonite, uniformly mixing, adding plant gum and animal gum as binders, slowly adding the materials into a granulator after fully mixing to prepare spherical particles, and sieving after boiling drying to obtain medicinal fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving cyclodextrin with a certain amount of water, mixing uniformly, and spraying the coating agent on the surface of the pesticide fertilizer particles uniformly by using a boiling drying spraying device. Drying to obtain coated pesticide-fertilizer granules;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing at a ratio of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus subtilis, the gamma-polyglutamic acid and a proper amount of water to obtain mixture bacterial slurry, and uniformly spraying the bacterial slurry on the surfaces of the particles prepared in the step (B) by using boiling drying spraying equipment. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =13:5:7, can be used in eucalyptus forests with low fertility, and the using method comprises the following steps: a crescent fertilizing ditch which is 30cm long, 20cm wide and 5-8cm deep is formed at the position 30cm away from the upward slope direction of the root of the fast-growing eucalyptus seedling, the weeding pesticide fertilizer is scattered in the ditch, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer in the embodiment is 250 and 300g per plant, and the soil is covered.

Example 5

component name	Mass percent (%)
		Hexazinones	0.21
Urea	22
		Diammonium phosphate	15
Potassium sulfate	13
		Humic acid	18
Fermented product of seaweed	9
		Vegetable gum	0.5
Polyethylene glycol	2
		Kaolin clay	15
Attapulgite powder	Make up the balance
		Diphenylmethane diisocyanate	0.9
Bacillus subtilis	0.01
		Bacillus licheniformis	0.01
Gamma-polyglutamic acid	0.5

A. preparing a pesticide fertilizer core: pulverizing and uniformly mixing hexazinone, urea, diammonium phosphate, potassium sulfate, humic acid, seaweed fermentation product, kaolin and attapulgite powder, adding vegetable gum and polyethylene glycol as binders, slowly adding the materials into a granulator after fully mixing to prepare spherical particles, and sieving after boiling drying to obtain pesticide-fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving diphenylmethane diisocyanate by using a certain amount of soybean polyol, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer particles by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer particles;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and B, mixing the components according to a ratio of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus subtilis, the bacillus licheniformis and the gamma-polyglutamic acid with a proper amount of water to obtain mixture bacterial slurry, uniformly spraying the bacterial slurry on the surface of the particle prepared in the step B by using a boiling drying spraying device, and drying to obtain the controlled-release eucalyptus herbicide fertilizer particle.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =13:8:7, can be used in the eucalyptus additional manuring, and the using method comprises the following steps: a crescent fertilizing ditch with the length of 30cm, the width of 20cm and the depth of 5-8cm or a fertilizing ditch with the length of 50cm, the width of 30cm and the depth of 8-10cm is arranged at a position 30cm away from the upward slope direction of the root of the seedling of the fast-growing eucalyptus, and the herbicide fertilizer is scattered in the ditchThe dosage and the fertilizing amount of the hexazinone are comprehensively considered, and the dosage of the pesticide fertilizer in the embodiment is as follows: the nursery period of the young forest is 200-.

Example 6

component name	Mass percent (%)
		Hexazinones	0.12
Ammonium chloride	21
		Monoammonium phosphate	18
Potassium chloride	16
		Humic acid	20
Fermented product of seaweed	10
		Animal glue	0.5
Polyethylene glycol	1.5
		Bentonite clay	10
Attapulgite powder	Make up the balance
		Polypropylene carbonate	1.1
Bacillus subtilis	0.02
		Bacillus mucilaginosus	0.01
Gamma-polyglutamic acid	0.4

A. preparing a pesticide fertilizer core: pulverizing hexazinone, ammonium chloride, monoammonium phosphate, potassium chloride, humic acid, seaweed fermentation product, bentonite and attapulgite powder, uniformly mixing, adding animal glue and polyethylene glycol as binders, slowly adding the materials into a granulator after fully mixing to prepare spherical particles, and sieving after boiling drying to obtain medicinal fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving polypropylene carbonate by using a certain amount of ethyl acetate, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer particles by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer particles;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to the proportion of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus subtilis, the bacillus mucilaginosus, the gamma-polyglutamic acid and a proper amount of water to obtain mixture bacterial pulp, and uniformly spraying the bacterial pulp on the surfaces of the particles prepared in the step (B) by utilizing a boiling drying spraying device. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =8:11:10, can be used in top dressing of eucalyptus, and can effectively promote the height of eucalyptus plants. The using method comprises the following steps: fertilizing furrows with the length of 50cm, the width of 30cm and the depth of 8-10cm are arranged between water dripping lines of the old plants, weeding pesticide fertilizer is scattered in the furrows, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer is 750 plus 1000 g/plant, and then the plants are covered with soil.

Example 7

component name	Mass percent (%)
		Hexazinones	0.21
Urea	31
		Diammonium phosphate	9
Potassium sulfate	20
		Humic acid	10
Fermented product of seaweed	5
		Polyethylene glycol	2
Attapulgite powder	20.25
		Polyvinyl alcohol	1.0
Cyclodextrin	1.2
		Bacillus licheniformis	0.02
Bacillus mucilaginosus	0.02
		Gamma-polyglutamic acid	0.3

A. preparing a pesticide fertilizer core: pulverizing hexazinone, urea, diammonium phosphate, potassium sulfate, humic acid, seaweed fermentation product and attapulgite powder, uniformly mixing, adding polyethylene glycol as a binder, fully mixing, slowly adding the materials into a granulator to prepare spherical particles, and sieving after boiling drying to obtain pesticide-fertilizer particles with uniform particle size;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to the proportion of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus licheniformis, the bacillus mucilaginosus, the gamma-polyglutamic acid and a proper amount of water to obtain mixture bacterial pulp, and uniformly spraying the bacterial pulp on the surfaces of the particles prepared in the step (B) by utilizing a boiling drying spraying device. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules.

The nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =15:5:11, can be used in top dressing of eucalyptus, and can effectively promote thickening of eucalyptus. The using method comprises the following steps: fertilizing furrows with the length of 50cm, the width of 30cm and the depth of 8-10cm are arranged between water dripping lines of the old plants, weeding pesticide fertilizer is scattered in the furrows, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer in the embodiment is 500-600 g/plant, and then the plants are covered with soil.

Example 8

component name	Mass percent (%)
		Hexazinones	0.2
Ammonium chloride	46
		Monoammonium phosphate	8
Potassium chloride	11
		Humic acid	20
Fermented product of seaweed	10
		Vegetable gum	0.5
Animal glue	0.5
		Polyethylene glycol	1.0
Kaolin clay	1.25
		Arabic gum	0.6
Gelatin	0.4
		Bacillus subtilis	0.01
Bacillus licheniformis	0.02
		Bacillus mucilaginosus	0.02
Gamma-polyglutamic acid	0.5

A. preparing a pesticide fertilizer core: pulverizing hexazinone, ammonium chloride, monoammonium phosphate, potassium chloride, humic acid, seaweed fermentation product and kaolin, uniformly mixing, adding vegetable gum, animal gum and polyethylene glycol as binders, slowly adding the materials into a granulator after fully mixing to prepare spherical particles, and sieving after boiling drying to obtain pesticide-fertilizer particles with uniform particle size;

B. wrapping the coating layer: dissolving arabic gum and gelatin with a certain amount of water, uniformly mixing, uniformly spraying the coating agent on the surfaces of the pesticide-fertilizer granules by using a boiling drying spraying device, and drying to obtain coated pesticide-fertilizer granules;

C. wrapping a soil improvement layer: mixing a small amount of starch and water according to the weight ratio of 1: and (4) mixing according to the proportion of 25, heating to boil, uniformly stirring, cooling the mixture to room temperature, uniformly mixing the bacillus subtilis, the bacillus licheniformis, the bacillus mucilaginosus, the gamma-polyglutamic acid and a proper amount of water to obtain mixture bacterial pulp, and uniformly spraying the bacterial pulp on the surfaces of the particles prepared in the step (B) by using a boiling drying spraying device. Drying to obtain the controlled-release eucalyptus weeding pesticide-fertilizer granules;

the nutrient content of the sustained and controlled release fertilizer obtained in the embodiment is N: P₂O₅:K₂O =13:5:7, can be used in top dressing of eucalyptus, and can effectively promote thickening of eucalyptus. Can be used as a base fertilizer for seedling planting, and the using method comprises the following steps: a crescent fertilizing ditch which is 30cm long, 20cm wide and 5-8cm deep is formed at the position 30cm away from the upward slope direction of the root of the fast-growing eucalyptus seedling, the weeding pesticide fertilizer is scattered in the ditch, the dosage and the fertilizing amount of the hexazinone are comprehensively considered, the dosage of the pesticide fertilizer in the embodiment is 200 and 250g per plant, and the soil is covered.

Example 9

The nitrogen release rate of the sustained and controlled release fertilizer in some embodiments of the invention is determined by referring to the national standard (GB/T) 23348-2009 sustained release fertilizer.

The samples of examples 1, 4, 6, 7 and 8 were used as test samples, and were used as ordinary fertilizers having nutrient contents equivalent to those of the test samples (no gamma-polyglutamic acid, humic acid, seaweed fermentation product, microbial agent and coating agent were added during granulation, and the balance of the excess was made up with an inert filler such as kaolin, bentonite or attapulgite powder, and no coating treatment was performed).

The proportion of the general fertilizer remarks is N: P₂O₅:K₂And (4) proportioning of O.

TABLE 1 comparison of nitrogen nutrient release rates of slow/controlled release fertilizers and general fertilizers according to some examples of the present invention

Example 10

The samples of examples 1, 2, 3, 5 and 6 were used as samples, and the common fertilizer with corresponding nutrient content was used as a sample control (the preparation method of the common fertilizer is shown in example 9, and the ratio of the notes of the common fertilizer is N: P₂O₅:K₂O proportion) and a blank control is additionally arranged, and the control effect of the test sample on weeds and the safety of the test sample on eucalyptus plants under corresponding application conditions are measured.

(1) The method for testing the control effect on weeds comprises the following steps: three replicates were set for each sample treatment and control treatment, each replicate containing two eucalyptus plants. Dividing each eucalyptus into 1 × 1m areas around each eucalyptus, and cleaning weeds around the plants by using a solution of acid and glyphosate. After the cleaning work is finished, the pesticide fertilizer or the contrast common fertilizer is applied to the ground according to the use method. After soil covering, uniformly spreading a mixture of bidens triphylla and couch grass seeds (25 seeds of each weed) in an area of 1 square meter around each eucalyptus plant, and covering a layer of fine soil. Finally, quantitative water is poured. The germination of each treated weed was observed 7 days, 15 days and 30 days after the treatment.

(2) And (3) safety test: and (4) observation.

TABLE 2 controlling effect of the controlled release fertilizer of some examples of the present invention on weeds and safety to eucalyptus

Example 11

2 treatments are set according to different fertilizer varieties, namely treatment of a base fertilizer in one embodiment 8 and treatment of an additional fertilizer in another embodiment 6, and treatment of a common fertilizer in another embodiment 8 and treatment of a base fertilizer in another embodiment 6, wherein the preparation method of the common fertilizer is shown in the embodiment 9, afforestation measures are carried out according to a conventional mode, the base fertilizer is applied during field planting, and the fertilizing amount ensures that the total nutrient content of the fertilizers applied in each treatment is the same. Applying additional fertilizer once at 1.0a of tree age, making crescent fertilization ditch 30cm long, 20cm wide and 5-8cm deep at 30cm upward slope of fast-growing eucalyptus seedling root, spreading quantitative herbicide fertilizer in the ditch, and covering with soil. The plant height and diameter are measured 3 months (0.2 a) after planting, and then the growth index of each eucalyptus treatment is investigated every 0.5 a.

TABLE 3 Effect of different treatments on Eucalyptus Tree height and Tree diameter growth

Example 12

The application amount of the fertilizer is calculated by 1000 g/strain by taking example 6 as a test sample, and comparing the effects of the two fertilizers on soil improvement by taking a common fertilizer (without coating, the microbial agent is directly mixed and granulated with a pesticide fertilizer) containing the same nutrient content, microbial agent dosage and gamma-polyglutamic acid content as a reference. Repeating the treatment for 3 times, taking a soil sample 60 days after the additional fertilization, and detecting the pH value, the EC value and the soil particle size of the soil. Wherein the soil particle size is measured to identify the soil texture. The dividing method of the soil texture refers to the classification standard of soil made in the United states: 1000-2000 μm is extra coarse sand; 500-1000 μm coarse sand; 250-500 mu m is medium sand; 100-250 is fine sand; 50-100 μm is superfine sand; 2-50 μm is powder; less than 2 μm is a sticky particle.

TABLE 4 Effect of different fertiliser treatments on the physicochemical Properties of the soil

The data show that the addition of the microbial agent and the gamma-polyglutamic acid into the pesticide fertilizer or the fertilizer can stabilize the pH value of the soil to a certain extent, slow down the acidification process of the soil, increase the content of clay grains and powder grains of the soil and improve the air permeability, water retention and fertilizer retention performance of the soil to a certain extent. And the microbial agent, the gamma-polyglutamic acid and the pesticide fertilizer core are separated by the coating material, so that the influence of the pesticide fertilizer core on the microbial activity can be effectively avoided, and meanwhile, the gamma-polyglutamic acid can exert the effect on the outer layer of the fertilizer more quickly.

Claims

1. a slow-release eucalyptus herbicidal fertilizer granule, is characterized in that,

The mass percentage content of each component of the herbicide fertilizer granules is as follows: cycloazinone 0.04-0.21%, fertilizer 30-65%, microbial inoculum 0.02-0.05%, γ-polyglutamic acid 0.2-0.5%, Probiotic acid 10-20%, seaweed fermented product 5-10%, coating agent 0.75-1.2%, and the balance is auxiliary material.

2. slow-release eucalyptus herbicidal fertilizer granules according to claim 1, is characterized in that,

The herbicidal fertilizer granules include a medicated fertilizer core, a coating layer and a soil improvement layer sequentially arranged from the inside to the outside, and the medicinal fertilizer core is composed of cycloazinone, fertilizer, humic acid, seaweed fermentation product and auxiliary materials; The coating layer includes a coating agent; the soil improvement layer includes a microbial inoculant and γ-polyglutamic acid.

3. slow-release eucalyptus herbicidal fertilizer granules according to claim 1, is characterized in that,

The fertilizer includes one or a combination of urea, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate, potassium chloride, potassium sulfate, potassium dihydrogen phosphate and the like.

4. The slow-release eucalyptus herbicidal fertilizer granule according to claim 1, wherein the auxiliary material comprises one or a mixture of the binder and the filler;

The binder is one or more mixtures of vegetable glue, animal glue and polyethylene glycol;

The filler is one or a mixture of kaolin, bentonite and attapulgite.

5. slow-release eucalyptus herbicidal fertilizer granules according to claim 1, is characterized in that,

The coating agent is one or a mixture of acacia gum, polyvinyl alcohol, cyclodextrin, diphenylmethane diisocyanate and polypropylene carbonate.

6. slow-release eucalyptus herbicidal fertilizer granules according to claim 2, characterized in that,

The material mass ratio of the coating agent and the fertilizer core is controlled between 1:80-1:140.

7. slow-release eucalyptus herbicidal fertilizer granules according to claim 1, characterized in that,

The microbial inoculum is one or a mixture of Bacillus subtilis, Bacillus licheniformis and Bacillus amyloliquefaciens.

8. the preparation method of slow-release eucalyptus herbicidal fertilizer granules as described in any one of claim 1～7, is characterized in that,

Include the following steps:

A. Preparation of the core of medicinal fertilizer: crush and mix the cycloazinone, fertilizer, humic acid, seaweed fermentation product, and filler evenly, then add the binder, and after fully mixing, slowly add the material to the granulator to obtain spherical granules ; sieve after drying to obtain fertilizer granules with uniform particle size;

B. Wrap the coating layer: dissolve the coating agent with water or a recyclable volatile organic solvent, and after mixing evenly, use the boiling drying spray equipment to spray the coating agent evenly on the surface of the fertilizer particles, and dry to obtain the coating drug fertilizer pellets;

C. Wrap the soil improvement layer: Mix the microbial inoculum, γ-polyglutamic acid and an appropriate amount of water evenly, add an appropriate amount of starch, and mix evenly to prepare the mixture bacterial slurry, and use the boiling drying spray equipment to evenly spray the bacterial slurry in the step The surface of the coated medicinal fertilizer granules prepared by B is dried to obtain slow-release eucalyptus herbicide granules.

9. application of slow-release eucalyptus herbicidal fertilizer granules as described in any one of claims 1 to 7 in eucalyptus planting and weeding.

10. application as claimed in claim 9, it is characterized in that: open the crescent-shaped fertilizing ditch of long 25-35cm, wide 15-25cm, deep 5-8cm at the uphill direction 20-50cm place of fast-growing eucalyptus seedling roots or at A fertilization ditch with a length of 40-60cm, a width of 20-40cm and a depth of 8-10cm is opened between the drip lines of the older plants, and the herbicidal fertilizer is spread into the ditch and covered with soil; the use of the slow-release eucalyptus herbicidal fertilizer granules The amount is calculated according to the amount of active ingredients of cycloazinone: 0.2-0.5g/plant for eucalyptus seedlings (young forest tending period), 0.6-1.3g/plant for older plants.