CN109005967A - A kind of Chinese catalpa cottage method and Chinese catalpa seedling - Google Patents

Abstract

The present invention provides a kind of Chinese catalpa cottage method and Chinese catalpa seedling, is related to forest tree propagation technical field.A kind of Chinese catalpa cottage method comprising following steps: the first culture substrate is inserted on the top of Chinese catalpa cuttings, the notch of the bottom end to Chinese catalpa cuttings has callus to form or have root restriction appearance, then the second culture substrate is inserted into the bottom end of Chinese catalpa cuttings.Chinese catalpa cuttings avoids in conventional procedure and is appeared vividly by vacation as bring is lost by the way of first falling to insert.The first culture substrate is inserted on the top of Chinese catalpa cuttings, in the state that Chinese catalpa cuttings is in slotting at this time.The notch of bottom end to Chinese catalpa cuttings has callus to be formed or have root restriction appearance, further takes out Chinese catalpa cuttings, and the bottom end of Chinese catalpa cuttings is inserted into the second culture substrate and carries out follow-up cultivation.Insert easy to operate, cost of labor is cheap, while avoiding the appearance of false elephant of appearing vividly, efficiently solve the problems, such as Chinese catalpa cuttings it is perishable cause it is difficult to take root.The present invention also provides a kind of Chinese catalpa seedlings cultivated by the above method.

Description

A kind of catalpa cuttage method and catalpa sapling

technical field

The invention relates to the technical field of tree propagation, in particular to a catalpa tree cutting method and catalpa saplings.

Background technique

Catalpa has a straight trunk, dense branches and leaves, and the tree is as gorgeous as a crown. Its material is particularly fine and it grows very fast. It is known as the "King of Wood".

At present, catalpa has been popularized and planted in many provinces, and it has important application value in preventing soil erosion, protecting farmland, building timber forests, garden viewing and road greening. Catalpa has not yet formed large-scale and industrialized planting. The main reason is that due to the incompatibility of the catalpa tree's self-flowering, the fruit is scarce, the seed propagation is difficult, and the graft propagation is prone to disadvantages such as incompatibility and premature aging. Two methods of cutting and tissue culture are mostly used for the propagation of seedlings, but the survival rate of cuttings is very low regardless of hard branches or tender branches, and the cost of tissue culture is high, and the technology is complicated and cumbersome.

Contents of the invention

The object of the present invention is to provide a kind of catalpa cutting method, it can improve the survival rate of catalpa cutting.

Another object of the present invention is to provide a catalpa sapling, which has lower cultivation cost and simpler cultivation steps.

The present invention solves its technical problems by adopting the following technical solutions.

The present invention proposes a kind of catalpa cuttage method, and it mainly comprises the following steps:

Insert the top of the catalpa cuttings into the first culture substrate, wait for callus formation or root primordia to appear at the incision at the bottom of the catalpa cuttings, then insert the bottom of the catalpa cuttings into the second culture substrate.

The invention provides a catalpa sapling, which is cultivated by the above-mentioned catalpa cutting method.

The beneficial effect of the Chinese catalpa cuttage method that the embodiment of the present invention provides, catalpa sapling is:

In the process of traditional catalpa cutting cultivation, the cuttings are prone to false liveness that germinates first and then grows roots, so that the cultivators cannot deal with it in time, and the number of cuttings that actually survive is relatively small. In the catalpa cuttage method provided in the embodiment of the present invention, the catalpa cuttings are inserted upside down first, which avoids the loss caused by false work in the traditional process. After the catalpa cuttings are ready, the top of the catalpa cuttings is inserted into the first culture substrate, and the catalpa cuttings are in the state of upside-down insertion. After the cut of the bottom of the catalpa cuttings has callus formation or root primordia appear, the catalpa cuttings are taken out, and the bottom of the catalpa cuttings is inserted into the second culture medium for subsequent culture. The reverse insertion operation is simple, the labor cost is low, and the phenomenon of false work is avoided at the same time, which effectively solves the problem that the cuttings of catalpa are easy to rot and cause difficult rooting. The catalpa saplings cultivated by the above method not only have stable vitality, but also have low cultivation cost and are suitable for batch cultivation.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

The catalpa tree cutting method provided by the embodiments of the present invention and the catalpa tree seedlings cultivated by the method are described in detail below.

The embodiment of the present invention provides a kind of catalpa sapling, and its cultivation method mainly comprises the following steps:

Utilize a kind of catalpa cuttage method to cultivate above-mentioned catalpa sapling. Cutting propagation is to use the totipotency of plant cells and rely on the roots, stems, leaves and other vegetative bodies cut off from the mother plant to re-develop into a complete new plant under certain conditions. Cuttings can be divided into hard branch cuttings, tender branch cuttings, root cuttings, bud cuttings and leaf cuttings according to the different materials selected. Among them, the twig cutting method using the semi-lignified twigs of plants as materials has been increasingly valued by people because of its advantages such as simple operation, fast growth of seedlings, high reproduction coefficient, and low cost. Coupled with the development of modern solar greenhouse technology, twig cuttings can be carried out throughout the growth period of plants. The seasonality of hard branch cutting propagation is strong, and cutting propagation is generally carried out between Jingzhe and Qingming. Generally speaking, tender branches are softer and more difficult to root out, while hard branches are more mature, especially annual branches, which have a higher rooting rate. For a unified description, hard branches are mainly used in the embodiments of the present invention for subsequent tests and related descriptions.

The catalpa cuttage method that the embodiment of the present invention provides mainly comprises the following steps:

Prepare the catalpa cuttings.

Dig a shallow ditch in the sunny place of the nursery, the ditch depth is 18cm (it can also be other values according to specific needs), and the length and width depend on the size of the catalpa cuttings. Of course, the shallow ditch can also be a ready-made sunny planting ditch. Lay a 3-5 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now an upside-down insertion. Lay the thick second sand layer of 2-4 centimeters again in planting ditch, make the bottom of the catalpa cuttings that the second sand layer covers. It should be noted that the catalpa cuttings can be inserted individually or in bundles. The first sand layer and the second sand layer are not easy to be too thick or too thin, so as to ensure that the second sand layer has suitable ventilation ability, water loss prevention ability and heat preservation ability. In order to ensure that the sand layer has the above-mentioned suitable capabilities, generally the first sand layer and the second sand layer are wetted but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings.

After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. Plastic film generally refers to films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging, and as a coating layer. The plastic film can provide heat preservation and moisturizing effect for the cuttings of catalpa, and accelerate the rooting rate of the cuttings of catalpa. After half a month, check the callus or new root occurrence at the bottom of the catalpa cuttings every 2 days.

After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings.

The second culture substrate is prepared, and the second culture substrate includes the following raw materials in parts by weight: 50-70 parts of peat, 20-30 parts of perlite. For example, 70 parts of peat and 30 parts of perlite are used. Peat is a natural swamp product (also known as peat or peat) formed after thousands of years. It is the coal with the lowest degree of coalification, and it is also the most primitive state of coal. It is sterile, non-toxic, non-polluting, and has good ventilation performance. Peat is light in weight, retains water and fertilizer, is beneficial to microbial activities, enhances biological performance, and is rich in nutrients. It is not only a cultivation substrate, but also a good soil conditioner, and contains high organic matter, humic acid and nutrients. However, peat is a non-renewable resource, and the mining behavior has caused great damage to the environment. Adding a certain amount of perlite, on the one hand, reduces the amount of peat, and on the other hand, ensures that the second culture substrate has good porosity, so that the second culture substrate not only has sufficient nutrient supply capacity, but also ensures that the second culture substrate has Good ventilation capacity. The second culture substrate can also use other common substrates, such as garden soil, culture soil, mountain yellow mud, orchid mud, chaff ash, vermiculite, river sand, etc. Their environmental requirements are: good water permeability, certain Water retention capacity, easy to heat up, good heat preservation.

When the catalpa cuttings are inserted into the second culture medium, the bottom end of the catalpa cuttings (that is, the end with callus formation or root primordium) is inserted into the second culture medium, which is positive insertion at this time. Before the cuttings of catalpa are inserted into the second culture medium, the second culture medium can be sterilized first, so as to avoid a large number of necrosis of new roots and a large amount of rot of the cuttings of catalpa, and improve the rooting rate and survival rate of the cuttings of catalpa. The way of disinfection can be to spray potassium permanganate and/or carbendazim to the second culture substrate.

In order to further improve the survival rate of the catalpa cuttings in the second culture medium, before inserting the catalpa cuttings into the second culture medium, dip the bottom end of the catalpa cuttings into the hormone and then insert them into the sterilized second culture medium. The hormone includes root powder, and every kilogram of hormone includes 1000-1500 mg of root powder. The use of hormones stimulated the growth of roots and improved the rooting survival rate of catalpa cuttings. The content of the hormone endogenous rooting powder is not easy to be too high or too low, otherwise the influence on the growth of catalpa cuttings is not obvious or there will be adverse effects.

In the embodiment of the present invention, the rooting powder can adopt ABT rooting powder. ABT rooting powder is a new broad-spectrum and high-efficiency series of green plant growth regulators developed by Academician Wang Tao of the Chinese Academy of Forestry. It strengthens and regulates the content of plant endogenous hormones and the activity of important enzymes, promotes the synthesis of biomolecules, induces the morphological establishment of plant adventitious roots or buds, regulates the intensity of plant metabolism, and achieves the goal of improving the survival rate of seedling afforestation and the growth of forest trees. Purpose. It is widely used in forest trees, crops, fruit trees, flowers, species economy and medicinal plants, all of which have good results.

It is best to configure the hormone on site when it is used, so that the drug properties of the hormone can be better maintained.

Configuring hormones mainly includes the following steps:

Add alcohol to the root powder to obtain the first mixture, and make the first mixture in a liquid state; then add talcum powder to the first mixture to obtain the second mixture, and make the second mixture in a paste state. Then add talcum powder to the dried second mixture to obtain the hormone compounding the above-mentioned concentration requirements. When using talcum powder, it is dissolved in alcohol instead of water, which not only can quickly volatilize the hormone into powder, but also keep the hormone in the root system for a long time, which is conducive to the absorption of the root system. When dipping the bottom of the catalpa cuttings to pick up the hormone, if the bottom of the catalpa cuttings is not humid enough to pick up the hormone well, you can dip the bottom of the catalpa cuttings in clean water first, and then dip the hormone.

After inserting the bottom end of the catalpa cuttings into the second culture medium, it also includes: exposing 2-4 buds on the ground part of the catalpa cuttings, and binding the remaining buds to prevent the growth of this part of buds. The rest of the shoots can be bundled with plastic wrap. The bundling of buds reduces the consumption of nutrients and makes the nutrients more concentrated in the root system, which has a favorable effect on the germination of roots and is conducive to improving the survival rate of cuttings.

The culture conditions of catalpa cuttings in the second culture medium are generally about 25°C in temperature and 85-90% in humidity. Spray carbendazim and/or potassium permanganate every other week, and after spraying, the effect of turning the leaves of catalpa cuttings can be achieved. Carry out a small amount of watering many times in the early stage of growth, carry out less watering in the late stage of growth (after callus is formed in a large number), water once every two to three days, carry out intertillage and weeding after 30 days.

It should be noted that the above-mentioned catalpa cutting method is also applicable to cuttings of other plants, such as peach trees, grapefruit trees, pine trees and so on.

The characteristics and performance of the present invention will be described in further detail below in conjunction with the examples.

Example 1

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Get ready catalpa cuttings (also all select hard branch in subsequent embodiment). Choose sunny planting ditch. Fill the planting ditch with soil as the first culture substrate. Insert the top of the catalpa cuttings into the first culture substrate, and take out the catalpa cuttings after callus formation or root primordia appear at the incision at the bottom of the catalpa cuttings. After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the second culture medium for subsequent cultivation. The second culture substrate consisted of 80 g of peat and 40 g of perlite.

Example 2

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings.

Choose sunny planting ditch. Fill the planting ditch with soil as the first culture substrate. Insert the top of the catalpa cuttings into the first culture substrate, and then cover the bottom of the catalpa cuttings with a plastic film. After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings. After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the second culture medium for subsequent cultivation. The second culture substrate is composed of 80g culture soil and 30g vermiculite.

Example 3

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings.

Choose sunny planting ditch. Lay a 4 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now reverse insertion. Lay the second sand layer of 3 centimeters thick in planting ditch again, make the bottom of second sand layer cover the catalpa tree cuttings. Wet the first sand layer and the second sand layer but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings. After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. After half a month, check the callus or new root occurrence at the bottom of the catalpa cuttings every 2 days.

After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings. After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the second culture medium for subsequent cultivation. The second culture substrate is composed of 80g of culture soil and 30g of husk chaff ash.

Example 4

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings. Choose sunny planting ditch. Fill the planting ditch with soil as the first culture substrate. Insert the top of the catalpa cuttings into the first culture substrate, and take out the catalpa cuttings after callus formation or root primordia appear at the incision at the bottom of the catalpa cuttings. After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the second culture medium for subsequent cultivation. The second culture substrate consisted of 70 g of peat and 30 g of perlite.

Example 5

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings. Choose sunny planting ditch. Fill the planting ditch with soil as the first culture substrate. Insert the top of the catalpa cuttings into the first culture substrate, and take out the catalpa cuttings after callus formation or root primordia appear at the incision at the bottom of the catalpa cuttings. After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the sterilized second culture medium for subsequent cultivation. The second culture substrate consisted of 70 g of peat and 30 g of perlite. The second culture substrate was sterilized with carbendazim.

Example 6

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings. Choose sunny planting ditch. Lay a 4 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now reverse insertion. Lay the second sand layer of 3 centimeters thick in planting ditch again, make the bottom of second sand layer cover the catalpa tree cuttings. Wet the first sand layer and the second sand layer but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings.

After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. Wait for callus to form or root primordia to appear at the incision at the bottom of the catalpa cuttings, then take out the catalpa cuttings.

After taking out the catalpa cuttings, insert the bottom end of the catalpa cuttings into the sterilized second culture medium for subsequent cultivation. The second culture substrate consisted of 70 g of peat and 30 g of perlite. The second culture substrate was sterilized with carbendazim. Wherein, the bottom of the catalpa cuttings has callus formation or root primordia are dipped in the hormone and then inserted into the second culture medium. The root powder concentration in the hormone is 1400mg/kg.

Example 7

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings.

Dig a shallow ditch with a depth of 15 cm in the sunny place of the nursery. Lay a 4 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now reverse insertion. Lay the second sand layer of 3 centimeters thick in planting ditch again, make the bottom of second sand layer cover the catalpa tree cuttings. Wet the first sand layer and the second sand layer but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings.

After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. After half a month, check the callus or new root occurrence at the bottom of the catalpa cuttings every 3 days.

After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings.

Prepare the second culture substrate, which includes: 60g of peat and 25g of perlite.

When the catalpa cuttings are inserted into the second culture medium, the bottom end of the catalpa cuttings (that is, the end with callus formation or root primordium) is inserted into the second culture medium, which is positive insertion at this time. Before inserting the catalpa cuttings into the second culture medium, spray potassium permanganate and carbendazim to the second culture medium for disinfection.

Before inserting the catalpa cuttings into the second culture medium, dip the bottom end of the catalpa cuttings into the hormone and then insert the sterilized second culture medium. The hormones include ABT rooting powder, and each kilogram of hormones includes 1300 mg of ABT rooting powder. Hormones are configured on-site at the time of use.

The steps of configuring the hormone are as follows: adding alcohol to the rooting powder to obtain the first mixture, making the first mixture in a liquid state; adding talcum powder to the first mixture to obtain the second mixture, making the second mixture in a paste state. Then add talcum powder to the dried second mixture to obtain the hormone compounding the above-mentioned concentration requirements. That is, the hormone is mixed with talcum powder and root powder.

After inserting the bottom end of the catalpa cuttings into the sterilized second culture medium, it also includes: exposing two buds on the ground part of the catalpa cuttings, and binding the remaining buds to prevent the growth of this part of buds.

The culture conditions of the catalpa cuttings in the second culture medium are temperature of 26° C. and humidity of 88%. Spray carbendazim every two weeks, and after spraying, the effect of turning the leaves of the catalpa cuttings can be achieved. Carry out a small amount of watering many times in the early stage of growth, carry out less watering in the late stage of growth (after callus is formed in a large number), water once every two to three days, carry out intertillage and weeding after 45 days.

Example 8

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings.

Dig a shallow ditch with a depth of 18 cm in the sunny place of the nursery. Lay a 5 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now reverse insertion. Lay the second sand layer of 4 centimeters thick in planting ditch again, make the bottom of second sand layer cover the catalpa cutting. Wet the first sand layer and the second sand layer but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings.

After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. After half a month, check the callus or new root occurrence at the bottom of the catalpa cuttings every 2 days.

After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings.

Prepare the second culture substrate, which includes: 50g of peat and 20g of perlite.

When the catalpa cuttings are inserted into the second culture medium, the bottom end of the catalpa cuttings (that is, the end with callus formation or root primordium) is inserted into the second culture medium, which is positive insertion at this time. Before inserting the catalpa cuttings into the second culture substrate, spray potassium permanganate on the second culture substrate for disinfection.

Before inserting the catalpa cuttings into the second culture medium, dip the bottom end of the catalpa cuttings into the hormone and then insert the sterilized second culture medium. The hormones include ABT rooting powder, and each kilogram of hormones includes 1500 mg of ABT rooting powder. Hormones are configured on-site at the time of use.

The steps of configuring the hormone are as follows: adding alcohol to the rooting powder to obtain the first mixture, making the first mixture in a liquid state; adding talcum powder to the first mixture to obtain the second mixture, making the second mixture in a paste state. Then add talcum powder to the dried second mixture to obtain the hormone compounding the above-mentioned concentration requirements.

After inserting the bottom end of the catalpa cuttings into the sterilized second culture medium, it also includes: exposing two buds on the ground part of the catalpa cuttings, and binding the remaining buds to prevent the growth of this part of buds.

The culture conditions of the catalpa cuttings in the second culture medium are temperature of 24°C and humidity of 90%. Spray carbendazim every other week, and after spraying, the effect of turning the leaves of the catalpa cuttings can be achieved. Carry out a small amount of watering many times in the early stage of growth, carry out less watering in the late stage of growth (after callus is formed in a large number), water once every two to three days, carry out intertillage and weeding after 30 days.

Example 9

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare the catalpa cuttings.

Dig a shallow ditch with a depth of 18 cm in the sunny place of the nursery. Lay a 3 cm thick first sand layer at the bottom of the planting ditch, and then insert the top of the catalpa cuttings into the first sand layer, which is now reverse insertion. Lay the second sand layer of 2 centimeters thick in planting ditch again, make the bottom of second sand layer cover the catalpa cuttings. Wet the first sand layer and the second sand layer but impermeable (that is, the sand can reach the state of being held in a ball and falling apart when touched). The sand layer is the first culture substrate for catalpa cuttings.

After the second sand layer has covered the bottom of the catalpa cuttings, the bottom of the catalpa cuttings is covered with a plastic film. That is, the plastic film is covered on the second sand layer. After half a month, check the callus or new root occurrence at the bottom of the catalpa cuttings every 2 days.

After the cut at the bottom of the catalpa cuttings has callus formation or root primordia appear, take out the catalpa cuttings.

Prepare the second culture substrate, which includes: 70g of peat and 30g of perlite.

When the catalpa cuttings are inserted into the second culture medium, the bottom end of the catalpa cuttings (that is, the end with callus formation or root primordium) is inserted into the second culture medium, which is positive insertion at this time. Before inserting the catalpa cuttings into the second culture medium, spray carbendazim to the second culture medium for disinfection.

Before inserting the catalpa cuttings into the second culture medium, dip the bottom end of the catalpa cuttings into the hormone and then insert the sterilized second culture medium. Hormones include ABT rooting powder, and each kilogram of hormones includes 1000 mg of ABT rooting powder. Hormones are configured on-site at the time of use.

The steps of configuring the hormone are as follows: adding alcohol to the rooting powder to obtain the first mixture, making the first mixture in a liquid state; adding talcum powder to the first mixture to obtain the second mixture, making the second mixture in a paste state. Then add talcum powder to the dried second mixture to obtain the hormone compounding the above-mentioned concentration requirements.

After inserting the bottom end of the catalpa cuttings into the sterilized second culture medium, it also includes: exposing 3 buds on the ground part of the catalpa cuttings, and binding the rest of the buds to prevent the growth of this part of the buds.

The culture conditions of the catalpa cuttings in the second culture medium are temperature of 25° C. and humidity of 85%. Spray carbendazim every other week, and after spraying, the effect of turning the leaves of the catalpa cuttings can be achieved. Carry out a small amount of watering many times in the early stage of growth, carry out less watering in the late stage of growth (after callus is formed in a large number), water once every two to three days, carry out intertillage and weeding after 30 days.

comparative example

The present embodiment provides a catalpa sapling, which is cultivated by the following method.

Prepare catalpa cuttings (hard branches).

Select the sunny planting ditch. Lay substrate (composed of 70g of peat and 30g of perlite) at the bottom of the planting ditch, and insert the catalpa cuttings in the substrate. Before inserting the catalpa cuttings into the matrix, dip the bottom of the catalpa cuttings into the hormone and then insert into the matrix. The hormone is a mixed solution of ABT rooting powder and water, and the concentration of ABT rooting powder is 1000 mg/kg.

The cultivation conditions of the catalpa cuttings in the substrate are temperature 25°C and humidity 85%. Spray carbendazim every other week to disinfect the substrate and the cuttings of the catalpa, and after spraying, the effect of turning the leaves of the cuttings of the catalpa can be achieved. Carry out a small amount of watering many times in the early stage of growth, carry out less watering in the late stage of growth (after callus is formed in a large number), water once every two to three days, carry out intertillage and weeding after 30 days.

Test case

Adopt three kinds of breeding methods that embodiment 7-9 provides to cultivate respectively 200 strains of Chinese catalpa cuttings (all are hard branches). After 150 days, statistics were made on the survival of the plants cultivated by the three cultivation methods.

Adopt the cultivation method that comparative example provides to cultivate 200 catalpa tree cuttings (all are hard branches). After 150 days, the survival statistics of 200 plants were carried out.

The survival conditions of the plants cultivated by the four cultivation methods are shown in Table 1.

Table 1 Plant Survival Statistics

As can be seen from the statistical results of Table 1, the catalpa saplings cultivated by the catalpa cuttage method provided by the embodiments of the present invention have a significantly higher survival rate than that of the traditional catalpa cuttage method provided by comparative examples.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a catalpa cutting method, is characterized in that, comprises the following steps: Insert the top of the Chinese catalpa cutting into the first culture medium, wait for callus formation or root primordia to appear at the incision at the bottom of the Chinese catalpa cutting, then insert the bottom of the Chinese catalpa cutting into the second culture medium. 2. the catalpa cutting method according to claim 1, is characterized in that, after the top of the catalpa cutting is inserted into the first culture substrate, it also includes covering the bottom of the catalpa cutting with a plastic film . 3. the catalpa cuttage method according to claim 1, is characterized in that, described first cultivation substrate comprises sand, chooses a sunny planting ditch, lays the thick first 3-5 centimeter at the bottom of described planting ditch. Sand layer, then insert the top of the catalpa cuttings into the first sand layer, then lay a 2-4 cm thick second sand layer in the planting ditch, so that the second sand layer covers the catalpa The bottom of the tree cuttings, and then cover the bottom of the catalpa cuttings with a plastic film. 4. the catalpa cuttage method according to claim 1, is characterized in that, described second culture medium comprises the following raw material by weight: 50-70 parts of peat, 20-30 parts of perlite. 5. The catalpa tree cutting method according to claim 4, wherein said raw material comprises: 70 parts of said peat, 30 parts of said perlite. 6. the catalpa cuttage method according to claim 1, is characterized in that, before the bottom end of described catalpa cuttings is inserted into the second culture substrate, also includes: spraying potassium permanganate and potassium permanganate to the second culture substrate / or carbendazim. 7. the catalpa cuttage method according to claim 1, is characterized in that, after the otch of the bottom end of described catalpa cuttings has callus formation or has root primordium to appear, also comprise the following steps: Dip the bottom end of the catalpa cuttings where callus is formed or where root primordium appears, and then insert the hormone into the second culture substrate. The hormone includes rooting powder, and each kilogram of hormone includes 1000- 1500 mg of said root powder. 8. catalpa cuttage method according to claim 7, is characterized in that, configuring described hormone comprises the following steps: Adding alcohol to the rooting powder to obtain the first mixture, making the first mixture liquid; adding talcum powder to the first mixture to obtain the second mixture, making the second mixture paste, and adding The second mixture after drying is added with the talcum powder to obtain the hormone. 9. according to the described catalpa cuttage method according to any one of claim 1-8, it is characterized in that, after the bottom end of described catalpa cutting is inserted into the second culture medium, also comprise: Make the aerial part of described catalpa cuttings expose 2-4 buds, and the remaining buds are tied up to stop the growth of this part of buds. 10. A catalpa sapling, characterized in that the catalpa sapling is cultivated by the catalpa tree cutting method as claimed in any one of claims 1-9.