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CN110839655A - Corn growth regulator and preparation method thereof - Google Patents

Corn growth regulator and preparation method thereof Download PDF

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Publication number
CN110839655A
CN110839655A CN201911190164.4A CN201911190164A CN110839655A CN 110839655 A CN110839655 A CN 110839655A CN 201911190164 A CN201911190164 A CN 201911190164A CN 110839655 A CN110839655 A CN 110839655A
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parts
growth regulator
corn
brassinolide
weight
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Inventor
李志江
林建海
楚娟娟
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Jiangxi Xin Bang Technology Co Ltd
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Jiangxi Xin Bang Technology Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group, wherein Cn means a carbon skeleton not containing a ring; Thio analogues thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
    • A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/22—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom rings with more than six members
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • A01N57/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing acyclic or cycloaliphatic radicals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/08—Magnoliopsida [dicotyledons]
    • A01N65/20—Fabaceae or Leguminosae [Pea or Legume family], e.g. pea, lentil, soybean, clover, acacia, honey locust, derris or millettia

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Toxicology (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses a corn growth regulator and a preparation method thereof, wherein the corn growth regulator comprises an active ingredient and a synergistic safety agent, and the active ingredient comprises the following components in parts by weight: 0.001-1 part of brassinolide, 1-10 parts of diethyl aminoethyl hexanoate and 2-40 parts of ethephon, wherein the synergistic safety agent comprises the following components in parts by weight: 1-3 parts of dipotassium glycyrrhizinate, 1-3 parts of potassium cocoyl glycinate and 1-5 parts of suberect spatholobus stem alcohol extract. Under the normal growth environment, the invention can reduce or avoid the side effects of small corn cobs and thin stems and reduced yield, so that the nutrition is effectively transferred to reproductive growth, and corn plants are dwarfed, greenish, big, uniform, developed in plant root system, strong in lodging resistance, and capable of obviously improving the final harvest yield and optimizing the quality; the bactericidal composition has good control effect on field diseases caused by bacteria and fungi, reduces the dosage cost and has no residue; convenient, easy to operate and implement, low in dosage and low in cost.

Description

Corn growth regulator and preparation method thereof
Technical Field
The invention relates to the technical field of agricultural growth regulators, in particular to a corn growth regulator and a preparation method thereof.
Background
Corn is an important food crop and economic crop, and statistics show that the yield and the planting area of the corn are second to rice and wheat and third in the world. Plays an important role in the national economy and the civilian economy. The effective utilization of limited land resources and the improvement of the yield and quality of corn crops are the subjects of people's direction and invariance.
Commonly used corn growth regulators include the following:
(1) high yield element: the fertilizer is uniformly sprayed by a sprayer in the eight-leaf-spreading period of the corn until the leaves are completely wet, so that the yield can be increased by 11.2%. However, this operation is actually time-consuming and labor-intensive, and is affected by the environment, and thus the spraying effect cannot be achieved as desired.
(2) Ethephon: the corn leaf weight reducing agent has the effect on the rootstocks of the corn, can dwarf the height of the corn, enables the leaves to grow densely and vertically, is short and wide, obviously improves the weight of the corn ears, and can increase the yield by about 10 percent. Ethephon is a very dangerous drug, and is a serious hazard to the health of users and the environment, so that special care is needed in use, and the hazard to the human and the environment cannot be ignored in order to exert the yield-increasing effect.
(3) And (3) robust corn: is a duplicator for regulating the growth of plants and can regulate the physiological function of the corn. After the corn seedling culture medium is used, the corn plant is short and healthy, the plant height is reduced, the stem is thick, the heel is more, the lodging is resisted, the aging is delayed, the prematurity and the yield is increased, and the yield is increased by 8-13%. However, when the strong corn essence is used, the close planting degree needs to be increased, strict field management is required, fertilizer application needs to be increased, weak plants cannot be sprayed and cannot be used together with other medicines, meanwhile, the strong essence stock solution is corrosive, and special attention needs to be paid when the strong corn essence is sprayed.
(4) Diethyl aminoethyl hexanoate: after spraying, the thickness of the stem can be increased, and the root activity, the chlorophyll content of the spike position of the plant, the light and the speed can be improved. The spraying treatment at the 7-8 leaf stage has the best regulation effect, can reduce the bald tip length of the female ear, and increase the number of seeds in a row by 11 percent. But can not be mixed with alkaline pesticide and fertilizer when in use, and the dosage is strictly controlled below 100 g/mu.
From the above, the existing corn growth regulator basically belongs to a single product, and sometimes needs to be sprayed for multiple times, which consumes time and labor, has large dosage, higher input cost and low safety.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a corn growth regulator and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the corn growth regulator comprises an active ingredient and a synergistic safety agent, wherein the active ingredient comprises the following components in parts by weight: 0.001-1 part of brassinolide, 1-10 parts of diethyl aminoethyl hexanoate and 2-40 parts of ethephon, wherein the synergistic safety agent comprises the following components in parts by weight: 1-3 parts of dipotassium glycyrrhizinate, 1-3 parts of potassium cocoyl glycinate and 1-5 parts of suberect spatholobus stem alcohol extract.
Preferably, the active ingredient accounts for 1.5-3.7% of the plant growth regulator by mass, and the synergistic safety agent accounts for 1.5-10% of the plant growth regulator by mass.
Preferably, the brassinolide is selected from any one of 28-homobrassinolide, 24-epibrassinolide, 25-methyl brassinolide, propionyl brassinolide, 28-epibrassinolide, mixotrophin brassinolide or 14-hydroxy brassinosteroid.
The invention also provides a method for preparing the corn growth regulator, which comprises the steps of uniformly mixing the raw materials in the weight ratio, and preparing the mixture into a suspending agent, a water dispersible granule, a soluble solution or a dispersible oil suspending agent with an auxiliary agent allowed in pesticides.
Preferably, the preparation method of the caulis spatholobi alcohol extract comprises the following steps:
cleaning caulis spatholobi, crushing by a dry method, adding ethanol with the weight being 2-3 times that of the caulis spatholobi, standing for 20-30 min, adjusting the pH value to 5.6-6.0 by using NaAc-HAc buffer solution, refluxing for 1-3 h at 78-80 ℃, collecting reflux extracting solution, concentrating under reduced pressure, and performing spray drying to obtain the caulis spatholobi alcohol extract.
Preferably, concentrating under reduced pressure until the relative density is 1.05-1.1 g/cm.
Preferably, the spray dryer is adopted for spray drying, the air inlet temperature is 130-150 ℃, the air outlet temperature is 100-120 ℃, and the feeding speed is 3-5 ml/min.
The functions of the components in the invention are as follows:
brassinolide, a novel green environment-friendly plant growth regulator, is treated by soaking seeds and spraying stems and leaves of brassinolide with proper concentration. Can promote the growth of vegetables, melons, fruits and other crops, improve the quality, increase the yield, and ensure bright color and thicker leaves. The tea leaf picking time can be advanced, and the melon and fruit can have higher sugar content, larger individual, higher yield and better storage stability. Is harmless to human and livestock, and has safe and effective dosage when used normally. The brassinolide can be widely applied to various economic crops, can increase the yield by 5-15% and 30% higher, can obviously improve the quality, increase the sugar content and the weight of fruits and increase the gorgeous crops. Meanwhile, the drought resistance and the cold resistance of crops can be improved, and the symptoms of plant diseases and insect pests, phytotoxicity, fertilizer damage and freezing damage of the crops can be relieved.
Diethyl aminoethyl hexanoate, which can improve the activities of plant peroxidase and nitrate reductase, increase the content of chlorophyll to accelerate photosynthesis, promote division and elongation of plant cells, promote root development and regulate the balance of nutrients in vivo. The herbicide can effectively prevent crop poisoning under the condition of not reducing the effect of the herbicide by compounding with the herbicide, so that the herbicide can be safely used.
Ethephon mainly enhances the synthesis capability of ribonucleic acid in cells, promotes the synthesis of protein, can inhibit the synthesis of endogenous auxin, and delays the growth of plants.
Dipotassium glycyrrhizinate is a glycyrrhizic acid derivative, and has the effects of resisting inflammation, allergy, ulcer, epithelial cell tissue regeneration and the like. The 0.5 percent dipotassium glycyrrhizinate solution has the same anti-inflammatory effect as the 0.1 percent dexamethasone, but has no serious adverse reaction. The dipotassium glycyrrhizinate is white powder, and has the characteristics of high sweetness, good water solubility, low heat energy, low foamability and hemolytic effect, safety and no toxicity. Meanwhile, dipotassium glycyrrhizinate has the functions of diminishing inflammation, resisting ulcer, resisting oxidation, inhibiting bacteria, treating wounds and effectively removing superoxide ions and hydroxyl free radicals. Therefore, in the cosmetic industry, the skin care cream can be used for skin care cream, shower gel, freckle removing cream, facial masks and the like; in the pharmaceutical industry, can be used for eye drops and ointment for stomatitis; in daily chemical industry, can be used for toothpaste, mouthwash, shaving cream and the like. However, the application of the pesticide adjuvant has not been reported so far.
The cocoyl potassium glycinate has good cleaning capability, and rich, smooth and elastic foam; the safety and the stimulation of the polar region are very high, and the user feels smooth and not tight when using the device; the foaming performance is good under neutral to alkaline conditions; has good compatibility with fatty salt. Can improve the foam quality of a fatty acid salt system and the tight feeling after washing; the product is prepared from natural materials, and has good biodegradability. Is usually used for face washing milk, makeup remover, shampoo, bath lotion, toothpaste, soap, household cleaning agent, dispersant, emulsifier and industrial products, and is widely applied to oral cleaning, daily cleaning, personal bath products and the like. However, the application of the pesticide adjuvant has not been reported so far.
Spatholobus stem, warm in nature, bitter and sweet in taste. It enters liver and kidney meridians. Enriching blood, promoting blood circulation and dredging collaterals. Has effects in dilating blood vessel, inhibiting platelet aggregation, and promoting phosphorus metabolism. Contains various isoflavone, flavanone, chalcone, coumestrol, triterpenes, sterol, epifriedelin alcohol, daucosterol, formononetin, epicatechin, aloe-emodin, etc. The application of the caulis spatholobi is generally an aqueous extract, and the application of an alcohol extract of the caulis spatholobi is not reported so far.
After the active ingredient and the synergistic safety agent are compounded, the active ingredient consists of the following components in parts by weight: 0.001-1 part of brassinolide, 1-10 parts of diethyl aminoethyl hexanoate and 2-40 parts of ethephon, wherein the synergistic safety agent comprises the following components in parts by weight: 1-3 parts of dipotassium glycyrrhizinate, 1-3 parts of potassium cocoyl glycinate and 1-5 parts of caulis spatholobi alcohol extract, and the composition is reasonable in proportion, can well promote cell growth and division, synthesis of nucleic acid and protein, chlorophyll synthesis, photosynthetic rate and stress resistance are improved, apical dominance is broken, fruit setting and fruit enlargement are promoted, parthenocarpy is induced, the rod forming rate is high, and the rod is full of particles.
Compared with the prior art, the invention has the following advantages and positive effects:
under the normal growth environment, the invention can reduce or avoid the side effects of small corn cobs and thin stems and reduced yield, so that the nutrition is effectively transferred to reproductive growth, and corn plants are dwarfed, greenish, big, uniform, developed in plant root system, strong in lodging resistance, and capable of obviously improving the final harvest yield and optimizing the quality; the bactericidal composition has good control effect on field diseases caused by bacteria and fungi, reduces the dosage cost and has no residue; convenient, easy to operate and implement, low in dosage and low in cost.
Detailed Description
The following is a detailed description of specific embodiments of the invention.
Example 1
The corn growth regulator comprises an active ingredient and a synergistic safety agent, wherein the active ingredient comprises the following components in parts by weight: 0.052 parts of 28-high brassinolide, 6.28 parts of diethyl aminoethyl hexanoate and 21.5 parts of ethephon, wherein the synergistic safety agent consists of the following components in parts by weight: 2 parts of dipotassium glycyrrhizinate, 2 parts of potassium cocoyl glycinate and 3 parts of suberect spatholobus stem alcohol extract.
The active ingredient accounts for 2.75 percent of the mass of the plant growth regulator, and the synergistic safety agent accounts for 5.83 percent of the mass of the plant growth regulator.
The method for preparing the corn growth regulator comprises the steps of uniformly mixing the raw materials in the weight ratio, and preparing the mixture into a soluble solution with 2.5 percent of active ingredients in percentage by mass according to a conventional preparation method by using an auxiliary agent allowed in pesticides.
The preparation method of the caulis spatholobi alcohol extract comprises the following steps:
cleaning caulis Spatholobi, pulverizing by dry method, adding 2.5 times of ethanol, standing for 25min, adjusting pH to 5.8 with NaAc-HAc buffer solution, refluxing at 79 deg.C for 2h, collecting extractive solution, concentrating under reduced pressure until the relative density is 1.07g/cm, and drying with spray drier at air inlet temperature of 140 deg.C, air outlet temperature of 110 deg.C, and feeding speed of 4ml/min to obtain caulis Spatholobi ethanol extract.
Example 2
The corn growth regulator comprises an active ingredient and a synergistic safety agent, wherein the active ingredient comprises 1 part of propionyl brassinolide, 1 part of diethyl aminoethyl hexanoate and 40 parts of ethephon by weight, and the synergistic safety agent comprises the following components in parts by weight: 1 part of dipotassium glycyrrhizinate, 3 parts of potassium cocoyl glycinate and 1 part of suberect spatholobus stem alcohol extract.
The active ingredient accounts for 3.7 percent of the mass of the plant growth regulator, and the synergistic safety agent accounts for 1.5 percent of the mass of the plant growth regulator.
The method for preparing the corn growth regulator comprises the steps of uniformly mixing the raw materials in the weight ratio, and preparing the mixture into a suspending agent with 1.5% of active ingredients in percentage by mass according to a conventional preparation method by using auxiliary agents allowed in pesticides.
The preparation method of the caulis spatholobi alcohol extract comprises the following steps:
cleaning caulis Spatholobi, pulverizing by dry method, adding 3 times of ethanol, standing for 30min, adjusting pH to 5.6 with NaAc-HAc buffer solution, refluxing at 80 deg.C for 3h, collecting extractive solution, concentrating under reduced pressure until relative density is 1.1g/cm, and performing dry cultivation in spray drier at 150 deg.C, 120 deg.C and 3 ml/min.
Example 3
The corn growth regulator comprises an active ingredient and a synergistic safety agent, wherein the active ingredient comprises the following components in parts by weight: the synergistic safety agent comprises, by weight, 0.001 part of mixotrophin lactone, 10 parts of diethyl aminoethyl hexanoate and 2 parts of ethephon, wherein the synergistic safety agent comprises the following components in parts by weight: 3 parts of dipotassium glycyrrhizinate, 1 part of potassium cocoyl glycinate and 5 parts of suberect spatholobus stem alcohol extract.
The active ingredient accounts for 1.5 percent of the mass of the plant growth regulator, and the synergistic safety agent accounts for 10 percent of the mass of the plant growth regulator.
The method for preparing the corn growth regulator comprises the steps of uniformly mixing the raw materials in the weight ratio, and preparing the mixture into water dispersible granules with the mass percentage of active ingredients of 3.7% by using auxiliary agents allowed in pesticides according to a conventional preparation method.
The preparation method of the caulis spatholobi alcohol extract comprises the following steps:
cleaning caulis Spatholobi, pulverizing by dry method, adding 2 times of ethanol, standing for 20min, adjusting pH to 6.0 with NaAc-HAc buffer solution, refluxing at 78 deg.C for 1h, collecting extractive solution, concentrating under reduced pressure until relative density is 1.05g/cm, and performing dry cultivation in spray drier at air inlet temperature of 130 deg.C, air outlet temperature of 100 deg.C and feeding speed of 3ml/min to obtain caulis Spatholobi ethanol extract.
The diethyl aminoethyl hexanoate, ethephon, dipotassium glycyrrhizinate and potassium cocoyl glycinate of the above examples 1-3 were purchased from Shanxi Hao Chen Biotech Ltd;
caulis Spatholobi is from Langma Biotechnology Ltd;
28-high brassinolide, 25-methyl brassinolide and mixotrophin lactone, produced by Jiangxin Xinbang science and technology, Inc.
Test examples
The plant growth regulators prepared in the above examples 1 to 3 correspond to test examples 1 to 3, respectively, and are uniformly sprayed in the large-horn period of corn, wherein the standard is spray wetting, spray thorough and spray uniform.
The method comprises the following steps of spraying clean water with the same volume in a comparative example 1, spraying 0.01% soluble liquid of 28-high brassinolide in a comparative example 2, spraying 10% soluble granules of diethyl aminoethyl hexanoate in a comparative example 3, spraying 85% soluble powder of ethephon in a comparative example 4, and spraying 2.5% soluble liquid prepared from 28-high brassinolide 0.052 parts, diethyl aminoethyl hexanoate 6.28 parts and ethephon 21.5 parts in a comparative example 5.
In 2018 to 2019, 10, the corn variety Xian Yu 335 popularized in the current market in Linyi city of Shandong province was used as an experimental material. The medicine is used at about 9:00 in the morning, and the medicine is uniformly sprayed on the corn by a throat sprayer. The influence of conventional tests on the photosynthetic physiological related indexes of the leaves in the grain filling stage, the influence on the expression of the mature stage of the corn and the influence on the yield and the constitutive factors of the corn are researched, and the test results in the tables 1, 2 and 3 are respectively obtained.
TABLE 1 Effect of different component treatments on the photosynthetically related indices of leaves of maize seedlings
Figure DEST_PATH_IMAGE001
Note: the data in the above table are the average of three replicates.
The test results shown in Table 1 show that the photosynthetic assimilation capability of the corn is remarkably improved by spraying the growth regulator disclosed in the embodiments 1-3 of the invention in the large-horn period of the corn.
TABLE 2 Effect of different component treatments on maize maturity expression
Figure 81472DEST_PATH_IMAGE002
As shown in the test results shown in Table 2, the growth regulators of the embodiments 1 to 3 of the invention are sprayed in the large-horn-mouth period of the corn, the expression is very good in the mature period of the corn, the fresh weight, the dry weight and the like of the corn are higher than those of the comparative examples 1 to 5, and the plant height of the corn is lower than those of the comparative examples 1 to 5, so that the purposes of improving the thickness of the corn stalk, promoting aerial root and lateral root development and achieving height control and lodging resistance can be achieved by spraying the growth regulators of the embodiments 1 to 3 of the invention.
TABLE 3 Effect of different component treatments on corn yield and constitutive factors
Figure 424816DEST_PATH_IMAGE004
Note: the data in the above table are the average of three replicates.
The test results shown in Table 3 show that the growth regulator of the embodiments 1-3 can improve the yield of corn, increase the ear length, the grain weight and the like by spraying the growth regulator in the large-horn-mouth period of the corn.
The disease condition of the corn root rot is observed, a phenomenon that a large amount of root rot exists in a corn field sprayed with the growth regulator of comparative examples 1-5 in a large horn-mouth period of the corn is found, no large loss is caused by spraying the pesticide, and only a small amount of the corn sprayed with the growth regulator of examples 1-3 of the invention has the corn root rot phenomenon. In addition, the quality of the soil sprayed with the corn growth regulator is improved, and the water seepage, water retention and air permeability of the soil are enhanced.
Therefore, the purpose of increasing the yield of the corn can be achieved by spraying the growth regulator disclosed in the embodiments 1-3 of the invention, and the growth regulator has the advantages of safety, environmental protection, no harm to crops and the like.
The above embodiments are merely preferred embodiments of the present invention, and any simple modification, modification and substitution changes made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (7)

1. The corn growth regulator is characterized by comprising an active ingredient and a synergistic safety agent, wherein the active ingredient comprises the following components in parts by weight: 0.001-1 part of brassinolide, 1-10 parts of diethyl aminoethyl hexanoate and 2-40 parts of ethephon, wherein the synergistic safety agent comprises the following components in parts by weight: 1-3 parts of dipotassium glycyrrhizinate, 1-3 parts of potassium cocoyl glycinate and 1-5 parts of suberect spatholobus stem alcohol extract.
2. The corn growth regulator according to claim 1, wherein the active ingredient accounts for 1.5-3.7% of the plant growth regulator by mass, and the synergistic safener accounts for 1.5-10% of the plant growth regulator by mass.
3. A corn growth regulator according to claim 1 or 2, wherein the brassinolide is selected from any one of 28-homobrassinolide, 24-epibrassinolide, 25-methyl brassinolide, propionyl brassinolide, 28-epibrassinolide, mixotrophin brassinolide or 14-hydroxy brassinosteroid.
4. A method for preparing the plant growth regulator of claim 3, characterized in that the raw materials in the weight ratio are uniformly mixed and prepared into a suspending agent, a water dispersible granule, a soluble solution or a dispersible oil suspending agent together with an auxiliary agent allowed in pesticide.
5. The preparation method of the corn growth regulator as claimed in claim 4, wherein the preparation method of the caulis Spatholobi alcohol extract comprises the following steps:
cleaning caulis spatholobi, crushing by a dry method, adding ethanol with the weight being 2-3 times that of the caulis spatholobi, standing for 20-30 min, adjusting the pH value to 5.6-6.0 by using NaAc-HAc buffer solution, refluxing for 1-3 h at 78-80 ℃, collecting reflux extracting solution, concentrating under reduced pressure, and performing spray drying to obtain the caulis spatholobi alcohol extract.
6. The method for preparing the corn growth regulator according to claim 5, wherein the corn growth regulator is subjected to reduced pressure concentration until the relative density is 1.05-1.1 g/cm through thin film chromatography.
7. The preparation method of the corn growth regulator according to claim 5, wherein a spray dryer is adopted for spray drying, the air inlet temperature is 130-150 ℃, the air outlet temperature is 100-120 ℃, and the feeding speed is 3-5 ml/min.
CN201911190164.4A 2019-11-28 2019-11-28 Corn growth regulator and preparation method thereof Pending CN110839655A (en)

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