Seedling raising method for dalbergia odorifera seeds

Abstract

The invention relates to a dalbergia odorifera seed seedling raising method, which is characterized in that dalbergia odorifera seeds are soaked in a seed soaking solution, so that the dalbergia odorifera seeds can be promoted to quickly break dormancy, accelerate metabolic activity and germinate, and the germination rate of the dalbergia odorifera seeds can be increased. According to the method, wood chips, corn straw powder, rice hulls and wormcast are mixed and fermented, then coco coir, fine sand soil and red mud are added for aging, the prepared seedling raising substrate can promote rapid germination of dalbergia indica seeds, sufficient fertility and an excellent growth environment are provided, the growth speed of dalbergia indica buds can be accelerated, and the survival rate of dalbergia indica seedlings is increased. The method has the advantages of simple operation, good growth vigor, shortening of the germination period of the dalbergia odorifera seeds, realization of rapid germination, relatively improvement of the germination rate of the dalbergia odorifera seeds, high seedling raising efficiency of the dalbergia odorifera seeds, and improvement of the uniformity of seedlings.

Description

Technical Field

[0001] The present invention relates to the technical field of seedling raising, and particularly relates to a method for raising seedlings of Dalbergia sissoo Roxb. Background Art

[0002] Seeds are unique reproductive bodies of gymnosperms and angiosperms. They are formed by the ovules of seed plants through pollination and fertilization. Generally, they consist of three parts: seed coat, embryo, and endosperm. For some plants, mature seeds only have two parts: seed coat and embryo. The embryo is the most important part of the seed and grows into a new individual after germination. Plant seeds have important ecological and economic values. They are the basis for the stability and prosperity of plant populations and are also indispensable elements in agricultural production. Through sowing and planting, humans can obtain rich agricultural products and wood resources to meet production and living needs.

[0003] Dalbergia sissoo Roxb. is a tree in the legume family and the genus Dalbergia. It is also a tree species with various uses such as ornamental value and economic value. It is cultivated in Fujian, Guangdong, Hainan and other places in China, and is also distributed in tropical regions around the world from eastern Iran to India. It likes a warm and humid climate, has a medium growth rate, and has a spreading crown, with a certain ornamental value. At the same time, its heartwood is brown, the wood is hard and not easy to crack, and it is an excellent material for carving, joinery, floors and furniture. Since its wood is highly favored in the market, in order to protect this rare resource, it is necessary to rationally exploit and utilize it to ensure the sustainability of its resources and ecological balance.

[0004] At present, most of the plantings of Dalbergia sissoo Roxb. are directly transplanted from nursery stock farms or wild areas. When transplanting, the nursery stock needs to be root-pruned and trimmed, which is easy to damage the roots and results in a low survival rate of the planted nursery stock. Container seedling raising is a widely used nursery stock production technology at present and is the main supply form of forest tree seeds and seedlings in forestry developed countries. However, in the process of raising seedlings of Dalbergia sissoo Roxb. seeds, there are problems such as a long germination period, a low germination rate, poor growth, and uneven seedlings during seedling raising, which makes the market price of Dalbergia sissoo Roxb. seedlings relatively high. Therefore, it is crucial to study a highly efficient method for raising seedlings of Dalbergia sissoo Roxb. seeds, which has certain social benefits and application values. Summary of the Invention

[0005] Based on this, it is necessary to provide a method for raising seedlings of Dalbergia sissoo Roxb.

[0006] The technical solution for the present invention to solve the above technical problems is as follows: A method for raising seedlings of Dalbergia sissoo Roxb. includes the following steps:

[0007] Mix sawdust, corn straw powder, rice husks and earthworm manure, then evenly spray fermentation bacterial liquid for fermentation. After fermentation is completed, add coconut coir, fine sandy soil and red clay for mixing, and age to obtain a seedling raising substrate;

[0008] Soak the seeds of Dalbergia sissoo Roxb. with the seed soaking solution;

[0009] Sow the soaked seeds of Dalbergia sissoo Roxb. by dibbling, and cover with a layer of the seedling raising substrate for seedling raising.

[0010] In one embodiment, when mixing sawdust, corn straw powder, rice husk and earthworm manure, and then evenly spraying the fermentation bacterial liquid for fermentation, control the fermentation temperature at 25°C - 35°C, ferment for at least 20 days, and spray water during fermentation to maintain humidity.

[0011] In one embodiment, the weight parts of the sawdust are 8 - 12 parts, the weight parts of the corn straw powder are 15 - 25 parts, the weight parts of the rice husk are 15 - 25 parts, the weight parts of the earthworm manure are 90 - 110 parts, the weight parts of the coconut coir are 3 - 7 parts, the weight parts of the fine sandy soil are 280 - 320 parts, and the weight parts of the red mud are 90 - 110 parts.

[0012] In one embodiment, the preparation method of the fermentation bacterial liquid is: add brown sugar and EM fermentation bacteria into the aqueous solution, stir and dissolve, and then let it stand for the bacteria to revive to obtain the fermentation bacterial liquid.

[0013] In one embodiment, after the fermentation is completed, add coconut coir, fine sandy soil and red mud for mixing, and when aging to obtain the seedling raising substrate, control the paving area of the mixed substrate to be 2m 2 -4m 2 , and the paving thickness is 15 cm - 20 cm, and age for at least 20 days.

[0014] In one embodiment, when soaking the seeds of Dalbergia sissoo Roxb. with the seed soaking solution, completely immerse the seeds of Dalbergia sissoo Roxb. in the seed soaking solution, control the soaking time to be 6 hours, and stir once every 1 hour during soaking.

[0015] In one embodiment, the preparation method of the seed soaking solution is: add gibberellin·indole·brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc dithiocarbamate and trace element water-soluble fertilizer into the aqueous solution, and stir evenly to obtain the seed soaking solution.

[0016] In one embodiment, the ratio among gibberellin·indole·brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc dithiocarbamate and trace element water-soluble fertilizer is 1:2:1:100:10.

[0017] In one embodiment, after sowing the soaked seeds of Dalbergia sissoo Roxb. by dibbling and covering with a layer of the seedling raising substrate for seedling raising, it further includes: transplanting the Dalbergia sissoo Roxb. seedlings with a height of 5 cm - 6 cm into nutrient bags for cultivation.

[0018] In one embodiment, when transplanting Dalbergia sissoo Roxb. seedlings with a seedling height of 5 cm - 6 cm into nutrient bags for cultivation, the seedlings are unearthed after the seedling height of Dalbergia sissoo Roxb. reaches at least 50 cm.

[0019] The beneficial effects of the present invention are as follows: A method for raising seedlings of Dalbergia sissoo Roxb. seeds provided by the present invention can promote the rapid breaking of dormancy of Dalbergia sissoo Roxb. seeds, accelerate metabolic activities, and promote the germination of Dalbergia sissoo Roxb. seeds by soaking the seeds with a soaking solution, thereby improving the germination rate of Dalbergia sissoo Roxb. seeds. By mixing sawdust, corn straw powder, rice husks, and earthworm manure for fermentation and then adding coconut coir, fine sand, and red clay for aging, the prepared seedling-raising substrate can not only promote the rapid germination of Dalbergia sissoo Roxb. seeds, but also provide sufficient fertility and an excellent growth environment, which can accelerate the growth rate of Dalbergia sissoo Roxb. sprouts and make them grow well. Thus, the germination cycle of Dalbergia sissoo Roxb. seeds is shortened, rapid germination is achieved, the germination rate of Dalbergia sissoo Roxb. seeds is relatively increased, the seedling-raising efficiency of Dalbergia sissoo Roxb. seeds is high, and the uniformity of the seedlings is improved. At the same time, by using sawdust, corn straw powder, rice husks, earthworm manure, coconut coir, fine sand, and red clay to prepare the seedling-raising substrate for Dalbergia sissoo Roxb. seeds, not only are the raw materials easily obtained, but also it is beneficial to solve the problem of treating agricultural solid waste materials, reduce production costs, and be more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic flow chart of a method for raising seedlings of Dalbergia sissoo Roxb. seeds according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] In one embodiment, as Figure 1 shown, a method for raising seedlings from Dalbergia sissoo Roxb. seeds comprises the following steps:

[0025] Step 110: Mix sawdust, corn straw powder, rice husk and earthworm manure, then evenly spray fermentation bacterial liquid for fermentation. After fermentation is completed, add coconut coir, fine sandy soil and red clay for mixing, and age to obtain a seedling-raising substrate.

[0026] In this embodiment, the sawdust is eucalyptus sawdust or pine sawdust, the particle size of the sawdust is less than or equal to 5 mm, the earthworm manure is the earthworm manure produced after being digested and absorbed by the earthworm intestine with cow dung as the raw material, the particle size of the corn straw powder is less than or equal to 3 mm. When mixing sawdust, corn straw powder, rice husk and earthworm manure and then evenly spraying fermentation bacterial liquid for fermentation, the film covering method can be adopted to control the fermentation temperature at 25°C - 35°C, and the fermentation is carried out for at least 20 days, and water is continuously sprayed during the fermentation period to maintain humidity, which is beneficial to better fermentation of sawdust, corn straw powder and rice husk. By mixing and fermenting sawdust, corn straw powder, rice husk and earthworm manure, the organic substances in the substrate can be decomposed or transformed into substances with stable performance, which can avoid re-fermentation due to changes in water, temperature and oxygen conditions during the seedling-raising process, avoid the generation of heat, temperature rise and harmful gases and liquids, ensure the chemical stability of the substrate, and is beneficial to the healthy growth of the seedling roots. Through fermentation treatment, high temperature and the metabolic action of microorganisms can be used to kill harmful organisms such as germs and insect eggs that may exist in the substrate, which helps to reduce the occurrence of pests and diseases during the seedling-raising process, improve the survival rate and health level of the seedlings, and can also improve the physical structure of the substrate, making it more loose and breathable, which is beneficial to the respiration of the seedling roots and the absorption of water and nutrients, thereby promoting the germination and growth of Dalbergia sissoo Roxb. seeds. The fermented organic waste contains various nutrient elements such as nitrogen, phosphorus, potassium and trace elements, which can improve the fertility of the seedling-raising substrate, provide comprehensive nutritional support for Dalbergia sissoo Roxb. seeds, and meet the nutritional requirements for the germination and growth of Dalbergia sissoo Roxb. seeds.

[0027] In this embodiment, when adding coconut coir, fine sandy soil and red clay for mixing and aging to obtain a seedling-raising substrate after fermentation is completed, control the spreading area of the mixed substrate to be 2 m 2 -4 m 2, and the paving thickness is 15 cm - 20 cm, and it is aged for at least 20 days, which is beneficial to ensuring oxygen supply, controlling temperature and promoting the uniform distribution of moisture in the substrate. During the aging stage, various materials continue to ferment and decompose at room temperature, further transforming and stabilizing organic substances. The seedling substrate with a particle size of 0.1 mm - 5 mm obtained through the fermentation and aging process can significantly improve the fertility of the seedling substrate, improve the structure of the seedling substrate, have good air permeability and water retention, thereby promoting the germination of Dalbergia sissoo seeds and accelerating the growth rate of young buds, with good growth, thus shortening the germination cycle of Dalbergia sissoo seeds, achieving rapid germination, high growth uniformity, and improving the seedling raising effect.

[0028] It is worth noting that the fermented sawdust is rich in cellulose and lignin, which is more easily absorbed and utilized by Dalbergia sissoo seeds. The fermented corn straw powder can improve the nutritional value and better improve the soil structure. The fermented rice husk can make the seedling substrate loose and breathable, prevent hardening and root rot. It can also increase the organic matter content of the soil and improve the water retention and fertilizer retention capacity of the seedling substrate. The fermented earthworm manure is rich in nutrients and microorganisms, which can further improve the soil fertility and soil structure, and promote the germination and growth of Dalbergia sissoo seeds. At the same time, the addition of coconut coir, fine sand and red clay also promotes the optimization of soil structure and the balanced distribution of nutrients. Coconut coir has excellent water retention performance, can absorb and store a large amount of water, and helps to maintain the soil humidity. The looseness of coconut coir can also improve the soil structure and prevent soil hardening. Fine sand can increase the air permeability and water permeability of the seedling substrate, and help the root growth and development of Dalbergia sissoo. Red clay is rich in various minerals and trace elements, which can further enrich the nutrient content of the soil and improve the soil fertility. At the same time, by using sawdust, corn straw powder, rice husk, earthworm manure, coconut coir, fine sand and red clay to prepare the seedling substrate for Dalbergia sissoo seeds, not only are the raw materials easy to obtain, but also it is beneficial to solve the problem of the treatment of agricultural solid waste materials, reduce the production cost, and be more environmentally friendly.

[0029] In one embodiment, the weight parts of the wood chips are 8 - 12 parts, the weight parts of the corn straw powder are 15 - 25 parts, the weight parts of the rice husks are 15 - 25 parts, the weight parts of the earthworm cast are 90 - 110 parts, the weight parts of the coco coir are 3 - 7 parts, the weight parts of the fine sandy soil are 280 - 320 parts, and the weight parts of the red mud are 90 - 110 parts. Specifically, by preparing the seedling-raising substrate for Dalbergia sissoo seeds with the wood chips, corn straw powder, rice husks, earthworm cast, coco coir, fine sandy soil and red mud according to the above weight parts, a combination of various organic and inorganic materials is achieved. With this weight ratio, the best fertilizer efficiency and substrate structure can be obtained, which can provide comprehensive nutrition, improve the structure of the seedling-raising substrate, promote the germination and growth of Dalbergia sissoo seeds, and play a comprehensive role in environmental protection and sustainability. The prepared seedling-raising substrate has good air permeability, water retention and fertility, can provide a suitable growth environment for Dalbergia sissoo seeds, and thus can promote the germination of Dalbergia sissoo seeds and the growth of young buds. At the same time, agricultural and forestry waste is utilized, realizing the resource utilization of waste, helping to reduce environmental pollution, improve the utilization efficiency of resources, and reduce production costs.

[0030] In one embodiment, the method for preparing the fermentation bacterial liquid is as follows: Add brown sugar and EM fermentation bacteria into an aqueous solution, stir and dissolve, and then let it stand for the revival of the bacterial species to obtain the fermentation bacterial liquid. Specifically, EM fermentation bacteria are a compound microbial inoculant (Effective Micro-organisms), which is a highly efficient compound microbial species, containing beneficial bacterial groups such as lactic acid bacteria, yeasts and actinomycetes. Mix brown sugar and EM fermentation bacteria in a weight ratio of 5:2, then add to the aqueous solution and stir to dissolve. Control the temperature of the aqueous solution at 27°C - 32°C, and let it stand for 2 - 6 hours for the revival of EM fermentation bacteria. For example, add 500 g of brown sugar and 200 g of EM fermentation bacteria into 10 L of aqueous solution, stir to dissolve, control the temperature of the aqueous solution at 30°C, and let it stand for 3 hours for the revival of EM fermentation bacteria. Brown sugar serves as a carbon source, which helps the growth and reproduction of EM fermentation bacteria and improves the fermentation environment. The fermented bacterial liquid after revival has stronger biological activity and a richer microbial community structure, and thus can better ferment the wood chips, corn straw powder, rice husks and earthworm cast.

[0031] Step 120, soak the Dalbergia sissoo seeds with the soaking solution.

[0032] In this embodiment, when soaking Dalbergia sissoo seeds with the soaking solution, the Dalbergia sissoo seeds are completely immersed in the soaking solution, the soaking time is controlled to be 6 hours, and stirring is carried out every 1 hour during the soaking period, so that the Dalbergia sissoo seeds can be in full contact with the soaking solution, which can not only sterilize and disinfect the Dalbergia sissoo seeds, but also promote the Dalbergia sissoo seeds to quickly break dormancy, accelerate metabolic activities, promote the germination of Dalbergia sissoo seeds, and thus improve the germination rate of Dalbergia sissoo seeds.

[0033] In one embodiment, the method for preparing the soaking solution is as follows: Gibberellin·Indole·Brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc ethylenebisdithiocarbamate and trace element water-soluble fertilizer are added to the aqueous solution and stirred evenly to obtain the soaking solution. Specifically, the Gibberellin·Indole·Brassinolide is Gibberellin·Indole·Brassinolide of the Bihoo brand, the imidacloprid is imidacloprid of the Jinsha brand, the main components of the Luna Run suspension concentrate are fluopyram and tebuconazole, and the total content of the active ingredients is 35%. The copper oxychloride·zinc ethylenebisdithiocarbamate is copper oxychloride·zinc ethylenebisdithiocarbamate of the Kejunbao brand, and the trace element water-soluble fertilizer is the trace element water-soluble fertilizer of the Yinyu brand. The Gibberellin·Indole·Brassinolide, the imidacloprid, the Luna Run suspension concentrate, the copper oxychloride·zinc ethylenebisdithiocarbamate and the trace element water-soluble fertilizer are mixed in a ratio of 1:2:1:100:10, and then added to the aqueous solution and stirred to dissolve. The temperature of the aqueous solution is controlled at 40°C - 45°C to prepare the soaking solution. For example, 1 g ± 0.1 g of Gibberellin·Indole·Brassinolide, 2 g ± 0.2 g of imidacloprid, 1 ml ± 0.1 ml of Luna Run suspension concentrate, 100 g ± 10 g of copper oxychloride·zinc ethylenebisdithiocarbamate and 10 g ± 1 g of trace element water-soluble fertilizer are added to 40 L of the aqueous solution and stirred to dissolve. The temperature of the aqueous solution is controlled at 40°C ± 5°C. Soaking the Dalbergia sissoo seeds with the prepared soaking solution can promote the Dalbergia sissoo seeds to quickly break dormancy, accelerate metabolic activities, promote the germination of Dalbergia sissoo seeds, and thus improve the germination rate of Dalbergia sissoo seeds.

[0034] Step 130, sowing the soaked Dalbergia sissoo seeds by strip sowing, and covering a layer of the seedling-raising substrate for seedling raising.

[0035] In this embodiment, when sowing Dalbergia sissoo seeds, spring and summer are generally selected for sowing. Sowing begins when the minimum temperature is above 15°C and the average daily temperature is above 20°C. Since the pods of Dalbergia sissoo are not easy to crack and the seeds are relatively small, it is advisable to separate the seed pods one by one and directly sow with the pods. By preparing the land, making ridges and digging ditches to form planting ditches, then evenly place Dalbergia sissoo seeds along the bottom of the ditch at a seeding rate of 900 - 1100 seeds per square meter, and cover a layer of nursery substrate on the surface of the Dalbergia sissoo seeds. The covering thickness should be such that the seeds are not visible. Finally, spray water in a timely manner to keep the seedbed moist to promote seed germination. After sowing, shade is provided using a 60% - 70% sunshade net, and water is applied 1 - 3 times a day to keep the nursery substrate at an appropriate humidity, that is, to maintain the water content of the nursery substrate at 18% - 23%.

[0036] In one embodiment, after sowing the soaked Dalbergia sissoo seeds by drill seeding and covering a layer of the nursery substrate for seedling raising, it further includes: transplanting Dalbergia sissoo seedlings with a seedling height of 5 cm - 6 cm into nutrient bags for cultivation. Specifically, by transplanting Dalbergia sissoo seedlings with a seedling height of 5 cm - 6 cm into nutrient bags, where the bag body specification of the nutrient bag is 12 cm × 15 cm, it can further provide a suitable growth environment for the growth of Dalbergia sissoo seedlings, provide sufficient growth space for the roots of Dalbergia sissoo seedlings, improve the planting survival rate of subsequent Dalbergia sissoo seedlings, and at the same time be more convenient for management and maintenance, and can be easily transplanted to the field or forest land for subsequent planting and management.

[0037] In one embodiment, when transplanting Dalbergia sissoo seedlings with a seedling height of 5 cm - 6 cm into nutrient bags for cultivation, the seedlings are unearthed after the seedling height of Dalbergia sissoo seedlings reaches at least 50 cm. Specifically, when the seedling height of Dalbergia sissoo seedlings is greater than or equal to 50 cm, their roots are usually relatively developed and have a strong ability to absorb water and nutrients. At the same time, enough branches and leaves have grown on the above-ground part of the seedlings, which can carry out photosynthesis to provide energy for their own growth, so that they can be transplanted to a more suitable growth environment for further cultivation and management.

[0038] A method for raising seedlings of Dalbergia sissoo Roxb. provided by the present invention can promote the rapid breaking of dormancy of Dalbergia sissoo Roxb. seeds, accelerate metabolic activities, and promote the germination of Dalbergia sissoo Roxb. seeds by soaking the Dalbergia sissoo Roxb. seeds with a soaking solution, which can improve the germination rate of Dalbergia sissoo Roxb. seeds. By mixing sawdust, corn straw powder, rice husks and earthworm manure for fermentation, and then adding coconut coir, fine sand and red clay for aging, the prepared seedling-raising substrate can not only promote the rapid germination of Dalbergia sissoo Roxb. seeds, but also provide sufficient fertility and excellent growth environment, which can accelerate the growth rate of Dalbergia sissoo Roxb. seedlings, with good growth, thus shortening the germination cycle of Dalbergia sissoo Roxb. seeds, achieving rapid germination, relatively increasing the germination rate of Dalbergia sissoo Roxb. seeds, making the seedling-raising efficiency of Dalbergia sissoo Roxb. seeds high, and improving the uniformity of seedlings. At the same time, by using sawdust, corn straw powder, rice husks, earthworm manure, coconut coir, fine sand and red clay to prepare the seedling-raising substrate for Dalbergia sissoo Roxb. seeds, not only are the raw materials easy to obtain, but also it is beneficial to solve the problem of treatment of agricultural solid waste materials, reduce production costs and be more environmentally friendly.

[0039] The following specific examples are used to further describe the present invention.

[0040] The detailed information of the medicaments used in the soaking solution in the following examples is as follows:

[0041] Gibberellin·Indole·Brassinolide wettable powder, brand: BiHuo, total effective ingredient content: 0.136%, pesticide registration number: pd20096813, pesticide production license / approval number: HNP44007-E0780.

[0042] Imidacloprid water dispersible granule, brand: JinSha, total effective ingredient content: 70%, pesticide production license / approval number: pesticide production license (Shaanxi) 0001, pesticide product standard number: GB\T 28139-2011.

[0043] Fludioxonil·Tebuconazole suspension, pesticide name: Luna Run, brand: Bayer, total effective ingredient content: 35%, pesticide product standard number: WQ / 49BAYER-CPF-022, pesticide registration number: PD20172927.

[0044] Copper oxychloride·Zineb wettable powder, brand: Ke Junbao, total effective ingredient content: 52%, pesticide registration number: pd382-2002, pesticide production license / approval number: pesticide production license (Jiangsu) 0079.

[0045] Trace element water-soluble fertilizer, brand: Yinyu, total nutrient content: 15.7%, including: iron, zinc, copper, manganese, magnesium, boron, molybdenum and cobalt, pH value is 5.0 - 7.0. Among them, the content of iron element is 4%, the content of zinc element is 5%, the content of copper element is 0.5%, the content of manganese element is 2%, the content of magnesium element is 2%, the content of boron element is 2%, the content of molybdenum element is 0.1%, and the content of cobalt element is 0.1%.

[0046] Example 1

[0047] A method for raising seedlings of Dalbergia sissoo seeds from India includes the following steps: Mix sawdust, corn straw powder, rice husks and earthworm manure, then evenly spray fermentation bacteria liquid for fermentation. Control the fermentation temperature at 30°C by covering with a film, ferment for 20 days, and continuously spray water during fermentation to maintain humidity. After fermentation is completed, add coconut coir, fine sandy soil and red clay for mixing, and control the spreading area of the mixed substrate to be 2m 2 , and the spreading thickness is 15 cm, and age for 20 days. When soaking Dalbergia sissoo seeds with the soaking solution, completely immerse the Dalbergia sissoo seeds in the soaking solution, control the soaking time to be 6 hours, and stir once every 1 hour during soaking. When sowing Dalbergia sissoo seeds, use the dibbling method for sowing, and cover a layer of seedling-raising substrate for seedling raising. The covering thickness should be such that the seeds are not visible. Finally, spray water in time to keep the seedbed moist. After sowing, use a 65% sunshade net for shading, water 1 - 3 times a day, so that the water content of the seedling-raising substrate is maintained at 18% - 23%. Then transplant the Dalbergia sissoo seedlings with a height of 5 cm - 6 cm into nutrient bags for cultivation.

[0048] Among them, the weight parts of sawdust are 8 parts, the weight parts of corn straw powder are 15 parts, the weight parts of rice husks are 15 parts, the weight parts of earthworm manure are 90 parts, the weight parts of coconut coir are 3 parts, the weight parts of fine sandy soil are 280 parts, and the weight parts of red clay are 90 parts.

[0049] The preparation method of the fermentation bacteria liquid is: Mix brown sugar and EM fermentation bacteria according to a weight ratio of 5:2, then add aqueous solution and stir to dissolve. Control the temperature of the aqueous solution to be 30°C, and place for 3 hours for the revival of EM fermentation bacteria to obtain the fermentation bacteria liquid, that is, add 500 g of brown sugar and 200 g of EM fermentation bacteria to 10 L of aqueous solution and stir to dissolve.

[0050] The preparation method of the seed soaking solution is as follows: Gibberellin·Indole·Brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc mancozeb and trace element water-soluble fertilizer are added to the aqueous solution in a ratio of 1:2:1:100:10, that is, 1 g of Gibberellin·Indole·Brassinolide, 2 g of imidacloprid, 1 ml of Luna Run suspension concentrate, 100 g of copper oxychloride·zinc mancozeb and 10 g of trace element water-soluble fertilizer are added to 40 L of aqueous solution and stirred to dissolve. The temperature of the aqueous solution is controlled at 40 °C to obtain the seed soaking solution.

[0051] Example 2

[0052] A method for raising seedlings of Dalbergia sissoo seeds includes the following steps: Mix sawdust, corn straw powder, rice husks and earthworm manure, then evenly spray the fermentation bacterial liquid for fermentation. The fermentation temperature is controlled at 30 °C by covering with a film, and fermentation is carried out for 20 days. During the fermentation period, water is sprayed continuously to maintain the humidity. After fermentation is completed, coconut coir, fine sand and red clay are added for mixing, and the spreading area of the mixed substrate is controlled to be 2 m 2 , and the spreading thickness is 15 cm, and aging is carried out for 20 days. When using the seed soaking solution to soak the Dalbergia sissoo seeds, the Dalbergia sissoo seeds are completely immersed in the seed soaking solution, the soaking time is controlled to be 6 hours, and stirring is carried out once every 1 hour during the soaking period. When sowing the Dalbergia sissoo seeds, sowing is carried out by drilling, and a layer of seedling-raising substrate is covered for seedling raising. The covering thickness should be such that the seeds are not visible. Finally, water is sprayed in time to keep the seedbed moist. After sowing, shade is provided with a 65% sunshade net, and watering is carried out 1-3 times a day to maintain the water content of the seedling-raising substrate at 18%-23%. Then, the Dalbergia sissoo seedlings with a seedling height of 5 cm - 6 cm are transplanted into nutrient bags for cultivation.

[0053] Among them, the weight portion of sawdust is 10 parts, the weight portion of corn straw powder is 20 parts, the weight portion of rice husks is 20 parts, the weight portion of earthworm manure is 100 parts, the weight portion of coconut coir is 5 parts, the weight portion of fine sand is 300 parts, and the weight portion of red clay is 100 parts.

[0054] The preparation method of the fermentation bacterial liquid is as follows: Brown sugar and EM fermentation bacteria are mixed in a weight ratio of 5:2, then added to the aqueous solution and stirred to dissolve. The temperature of the aqueous solution is controlled at 30 °C, and left for 3 hours for the resurrection of EM fermentation bacteria to obtain the fermentation bacterial liquid, that is, 500 g of brown sugar and 200 g of EM fermentation bacteria are added to 10 L of aqueous solution and stirred to dissolve.

[0055] The preparation method of the seed soaking solution is as follows: Gibberellin·Indole·Brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc manganese ethylenebisdithiocarbamate and trace element water-soluble fertilizer are added to the aqueous solution in a ratio of 1:2:1:100:10, that is, 1 g of Gibberellin·Indole·Brassinolide, 2 g of imidacloprid, 1 ml of Luna Run suspension concentrate, 100 g of copper oxychloride·zinc manganese ethylenebisdithiocarbamate and 10 g of trace element water-soluble fertilizer are added to 40 L of aqueous solution and stirred until dissolved. The temperature of the aqueous solution is controlled at 40 °C to obtain the seed soaking solution.

[0056] Example 3

[0057] A method for raising seedlings of Dalbergia sissoo seeds includes the following steps: Mix sawdust, corn straw powder, rice husks and earthworm manure, then evenly spray fermentation bacterial liquid for fermentation. The fermentation temperature is controlled at 30 °C by means of film covering, and fermentation is carried out for 20 days. During the fermentation period, water is sprayed continuously to maintain humidity. After fermentation is completed, coconut coir, fine sandy soil and red clay are added for mixing, and the spreading area of the mixed substrate is controlled to be 2 m 2 , and the spreading thickness is 15 cm, and aging is carried out for 20 days. When using the seed soaking solution to soak Dalbergia sissoo seeds, the Dalbergia sissoo seeds are completely immersed in the seed soaking solution, the soaking time is controlled to be 6 hours, and stirring is carried out once every 1 hour during the soaking period. When sowing Dalbergia sissoo seeds, sowing is carried out by drilling method, and a layer of seedling raising substrate is covered for seedling raising. The covering thickness should be such that the seeds are not visible. Finally, water is sprayed in time to keep the seedbed moist. After sowing, shading is carried out with a 65% sunshade net, and watering is carried out 1-3 times a day to keep the water content of the seedling raising substrate at 18%-23%. Then, Dalbergia sissoo seedlings with a seedling height of 5 cm - 6 cm are transplanted into nutrient bags for cultivation.

[0058] Among them, the weight fraction of sawdust is 12 parts, the weight fraction of corn straw powder is 25 parts, the weight fraction of rice husks is 25 parts, the weight fraction of earthworm manure is 110 parts, the weight fraction of coconut coir is 7 parts, the weight fraction of fine sandy soil is 320 parts, and the weight fraction of red clay is 110 parts.

[0059] The preparation method of the fermentation bacterial liquid is as follows: Brown sugar and EM fermentation bacteria are mixed in a weight ratio of 5:2, then added to the aqueous solution and stirred until dissolved. The temperature of the aqueous solution is controlled at 30 °C, and left for 3 hours for the revival of EM fermentation bacteria to obtain the fermentation bacterial liquid, that is, 500 g of brown sugar and 200 g of EM fermentation bacteria are added to 10 L of aqueous solution and stirred until dissolved.

[0060] The method for preparing the seed soaking solution is as follows: Gibberellin·Indole·Brassinolide, imidacloprid, Luna Run suspension concentrate, copper oxychloride·zinc manganese ethylenebisdithiocarbamate and trace element water-soluble fertilizer are added to the aqueous solution in a ratio of 1:2:1:100:10, that is, 1 g of Gibberellin·Indole·Brassinolide, 2 g of imidacloprid, 1 ml of Luna Run suspension concentrate, 100 g of copper oxychloride·zinc manganese ethylenebisdithiocarbamate and 10 g of trace element water-soluble fertilizer are added to 40 L of aqueous solution and stirred until dissolved. The temperature of the aqueous solution is controlled at 40 °C to obtain the seed soaking solution.

[0061] When using the Dalbergia sissoo Roxb. seed seedling raising method in the above Examples 1-3 for raising Dalbergia sissoo Roxb. seeds, the Dalbergia sissoo Roxb. seeds all germinated within 5-8 days after sowing, and the germination rate reached over 93%. Moreover, within 3 months after transplanting into the nursery bags, the seedling height of Dalbergia sissoo Roxb. can reach 80 cm - 100 cm, meeting the seedling emergence conditions.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0063] The above-described embodiments only represent several embodiments of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A method for raising seedlings of Dalbergia indica, characterized in that: The following steps are involved: Sawdust, corn stalk powder, rice husk and earthworm castings are mixed, and then fermentation liquid is evenly sprayed for fermentation, and after fermentation, coconut bran, fine sand and red mud are added for mixing, and aged to obtain a seedling medium; The seeds of Dalbergia indica are soaked with a soaking liquid; The soaked Dalbergia indica seeds are sown in a row sowing manner and covered with a layer of the seedling raising medium for seedling raising.

2. The method for raising seedlings of Dalbergia indica seeds according to claim 1, characterized in that: When the sawdust, corn stalk powder, rice husk and earthworm castings are mixed and then evenly sprayed with fermentation liquid for fermentation, the fermentation temperature is controlled at 25° C.-35° C. and the fermentation is carried out for at least 20 days. During the fermentation period, water is sprayed to maintain humidity.

3. The method for raising seedlings of Dalbergia indica seeds according to claim 2, characterized in that: The weight proportion of the sawdust is 8-12 parts, the weight proportion of the corn straw powder is 15-25 parts, the weight proportion of the rice husk is 15-25 parts, the weight proportion of the earthworm castings is 90-110 parts, the weight proportion of the coconut bran is 3-7 parts, the weight proportion of the fine sand is 280-320 parts, and the weight proportion of the red mud is 90-110 parts.

4. The method for raising seedlings of Dalbergia indica seeds according to claim 3, characterized in that: The preparation method of the fermentation bacterial liquid is as follows: brown sugar and EM fermentation bacteria are added into an aqueous solution, stirred and dissolved, and then allowed to stand for bacterial strain revival to obtain the fermentation bacterial liquid.

5. The method for raising seedlings of Dalbergia indica seeds according to claim 4, characterized in that: After the fermentation is completed, coconut husk, fine sand and red mud are added to mix and aged to obtain a seedling medium. The paving area of ​​the mixed medium is controlled to be 2m 2 -4m 2 , and the paving thickness is 15cm-20cm, and it is aged for at least 20 days.

6. The method for raising seedlings of Dalbergia indica seeds according to claim 1, characterized in that: When the Dalbergia indica seeds are soaked in the soaking liquid, the Dalbergia indica seeds are completely soaked in the soaking liquid, the soaking time is controlled to be 6 hours, and the seeds are stirred every 1 hour during the soaking period.

7. The method for raising seedlings of Dalbergia indica seeds according to claim 6, characterized in that: The preparation method of the seed soaking solution is as follows: adding gibberellin, indole, brassinolide, imidacloprid, Lunarun suspension, copper oxychloride, mancozeb and trace element water-soluble fertilizer into the aqueous solution, and stirring evenly to obtain the seed soaking solution.

8. The method for raising seedlings of Dalbergia indica according to claim 7, characterized in that: The ratio of the gibberellin·indole·brassinolide, the imidacloprid, the Lunarun suspension, the copper oxychloride·mancozeb and the trace element water-soluble fertilizer is 1:2:1:100:

10.

9. The method for raising seedlings of Dalbergia indica seeds according to claim 1, characterized in that: The method further comprises: sowing the soaked Dalbergia indica seeds in a row sowing manner and covering the seedling raising substrate with a layer of the seedling raising substrate for seedling raising, and then moving the Dalbergia indica seedlings with a seedling height of 5 cm to 6 cm into a nutrient bag for cultivation.

10. The method for raising seedlings of Dalbergia indica according to claim 9, characterized in that: When the Dalbergia indica seedlings with a seedling height of 5 cm-6 cm are moved into the nutrient bag for cultivation, the Dalbergia indica seedlings are allowed to emerge after the seedling height reaches at least 50 cm.

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