CN108863553B - Auxiliary agent of crop straw decomposition agent and preparation method thereof - Google Patents

Auxiliary agent of crop straw decomposition agent and preparation method thereof Download PDF

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CN108863553B
CN108863553B CN201810837742.8A CN201810837742A CN108863553B CN 108863553 B CN108863553 B CN 108863553B CN 201810837742 A CN201810837742 A CN 201810837742A CN 108863553 B CN108863553 B CN 108863553B
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auxiliary agent
crop straw
straw
distilled water
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CN108863553A (en
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李俊
张春雷
刘丽欣
廖星
熊俊兰
肖晓璐
陈畅
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Oil Crops Research Institute of Chinese Academy of Agriculture Sciences
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Abstract

The invention discloses an auxiliary agent of a crop straw decomposing inoculant and a preparation method thereof, wherein the auxiliary agent comprises aureobasidium pullulans polysaccharide, nano-silica, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate, potassium dihydrogen phosphate and distilled water according to a certain proportion, and the preparation method comprises the following steps of (1) respectively weighing each raw material and distilled water for later use; (2) mixing aureobasidium pullulans polysaccharide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate and potassium dihydrogen phosphate powder, adding distilled water, and uniformly mixing to obtain a mixture; (3) dissolving the mixture and the nano silicon dioxide by using alcohol, pouring the mixture into the alcohol, stirring the mixture evenly, adjusting the pH value by using dilute sulfuric acid after all the precipitate is dissolved, adding the remaining distilled water to a constant volume, and preparing the auxiliary agent. The formula is reasonable, the use is convenient, the microbial activity in the crop straw decomposition agent can be effectively activated, and the rapid and effective degradation of the components such as cellulose, lignin and the like in the crop straw is promoted. Ecological environmental protection, no environmental pollution and convenient popularization and application.

Description

Auxiliary agent of crop straw decomposition agent and preparation method thereof
Technical Field
The invention belongs to the field of bioengineering, and particularly relates to an auxiliary agent of a crop straw decomposing inoculant, and a preparation method of the auxiliary agent of the crop straw decomposing inoculant. The additive is suitable for degrading straws of various crops such as rice, corn, cotton, rape and the like.
Background
Chinese produces about 7 hundred million tons of crop straws annually, accounting for 30% of the total amount of straws in the world. Of the 7 hundred million or more tons of crop straw, less than 2000 million tons are utilized, and about 97% of the straw is incinerated, stacked or discarded. Improper disposal of crop straws not only causes great waste of resources, but also causes serious influence on a farmland system and the surrounding environment, thereby also influencing traffic safety, social production and people's life. In recent years, crop straws have become a new source of non-point source pollution in rural areas. In summer and autumn and winter every year, a great amount of rape and wheat are always present,The straws of corn and the like are burnt in the field to generate a large amount of dense smoke, which becomes a bottleneck problem of rural environment protection and even becomes a main cause of the influence on urban environment. Becomes "waste" that is "less useful" but must be disposed of. In this case, a phenomenon of incineration occurs in large quantities, which is completely handled by farmers. According to estimation, the crop straws in China are incinerated in the open air to discharge CO and CO2The amount of the active component reaches 1.15 multiplied by 10 respectively7And 1.57X 108Ton. The straw burning pollutes the air and seriously destroys the soil structure and the soil microbial flora.
However, straw is a major byproduct of agricultural crops and is also an important renewable organic resource. The crop straws contain rich nutrient components such as nitrogen, phosphorus, potassium, medium trace elements and the like, and the straw returning is a direct and effective way for utilizing straw resources. If the straw is returned to the field on the spot, the improvement of soil and farmland systems is very facilitated. Researches show that returning crop straws to the field is an effective and simple method for improving the organic carbon content of soil, fertilizing soil fertility and the cyclic utilization rate of nutrients. Returning the straws to the field to be decomposed under the action of soil microorganisms, and releasing nutrients such as nitrogen, phosphorus, potassium and the like for crops to absorb and utilize. However, an important factor restricting field returning of straws is the problem of straw decomposition speed, because crop rotation is performed in two or more than two seasons in many places in China, the time gap between the previous crops and the next crops is small, and the straws of the previous crops cannot be decomposed before being returned to the field, so that the normal sowing or growth of the next crops is influenced, and the low straw decomposition speed restricts the enthusiasm of farmers for returning the straws to the field.
In order to improve the utilization rate of the straws and reduce the burning of the crop straws, in recent years, many scientists focus on researching and developing a straw decomposition agent to promote the degradation speed of the crop straws, so that the purpose of returning the crop straws to the field quickly is achieved. The straw decomposition agent is a microorganism living preparation capable of accelerating decomposition of various crop straws. The straw decomposition agent is usually composed of a plurality of different microorganisms, and can quickly decompose organic wastes such as straws and the like, so that organic matters, elements such as phosphorus, potassium and the like contained in the straws can quickly become nutrients required by plant growth, soil organic matters are improved, the quality of crops is improved, and the yield of the crops is increased. However, because microorganisms in the decomposing inoculant are influenced by various factors such as straw type, buried depth, temperature, humidity, environmental microorganisms and the like, the activity cannot be fully excited, the propagation speed is influenced, and the decomposing effect is limited. Therefore, in order to overcome the influence factors in the aspects of straw type, environmental factors, microbial activity and the like and improve the action effect of the decomposition agent, the research team develops the auxiliary agent of the straw decomposition agent through repeated tests for many years, so that the degradation effect of the straw decomposition agent can be effectively improved, the straw degradation time is shortened, and the degradation quality is improved.
The invention utilizes the effective activating factor effect of microorganisms, combines the small-size effect and the surface activity effect of nano materials, adopts the traditional inducing activating factor and the modern nano technology to combine to develop the microbial propagation and degradation activity, improves the environmental factors to adapt to the microbial activation on one hand, improves the adaptability of the microorganisms to the environment on the other hand, improves the adaptability of the microorganisms to complex environmental conditions on the other hand, effectively improves the biological activity and the propagation activity of the microorganisms, helps the microorganisms to perform the work of diffusing cell walls in the early stage, expanding cell gaps, preliminarily corroding cells, starting corresponding physiological and biochemical reactions in plants and the like before the straw degradation is started, and further improves the straw degradation efficiency and the effect of the microorganisms.
Disclosure of Invention
The invention aims to provide an auxiliary agent of a crop straw decomposing inoculant. The auxiliary agent is suitable for promoting degradation of various decomposition agents, is also suitable for decomposition degradation of various crop straws of rice, corn, cotton, rape and the like, can effectively activate microbial activity in the crop straw decomposition agents, maintains micro-environments such as pH value, humidity, temperature and the like suitable for microbial activity in the crop straw decomposition agents, and promotes rapid and effective degradation of cellulose, lignin and other components of the crop straws.
The invention also aims to provide a preparation method of the auxiliary agent for the crop straw decomposing inoculant, which is easy to implement, simple and convenient to operate, stable in component dispersion, ecological, environment-friendly, free of environmental pollution and convenient to popularize and apply.
In order to achieve the purpose, the invention adopts the following technical measures:
an auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in parts by mass:
Figure BDA0001744856630000021
the aureobasidium pullulans is called Pullulan and English is called Pullulan. It is an extracellular pure natural high molecular polysaccharide which is produced by taking starch or saccharides as raw materials and fermenting the raw materials by microorganisms. The polysaccharide is easily soluble in water, safe, nontoxic, edible, and low in calorific value; good plasticity, film forming property and good gas barrier property of the film. Has wide application in the industries of cosmetics, medicines, foods, pesticides and the like. Because the biodegradable plastic can be degraded and utilized by microorganisms in nature, and cannot cause environmental pollution, the plastic is praised as nuisanceless plastic. Due to its unique properties, it has some advantages in applications that other products cannot replace.
The nano silicon dioxide (English name nano-silicon dioxide) is an inorganic chemical material and is commonly called white carbon black. Due to the superfine nanometer grade and the size range of 1-100 nm, the material has a plurality of unique properties, such as optical performance of resisting ultraviolet rays, and can improve the ageing resistance, strength and chemical resistance of other materials. The application is very wide. The nano-scale silicon dioxide is amorphous white powder, is nontoxic, tasteless and pollution-free, has a spherical microstructure, is in a flocculent and reticular quasi-particle structure, has a molecular formula and a structural formula of SiO2, and is insoluble in water.
The humic acid is a macromolecular organic substance widely existing in nature, is widely applied to various fields of agriculture, forestry and animal husbandry, petroleum, chemical industry, building materials, medicine, health, environmental protection and the like, and spans dozens of industries. Particularly, ecological agricultural construction, pollution-free agricultural production, green food, pollution-free environment-friendly products and the like are advocated under the eye, and the humic acid is highly advocated. The Chinese name is potassium humate.
The auxiliary agent is suitable for degrading various crop straws of rice, corn, cotton, rape and the like, is also suitable for activating various microorganism strains such as candida tropicalis, aspergillus oryzae, trichoderma viride, bacillus subtilis, actinomycetes, trichoderma harzianum, saccharomycetes, bacillus subtilis, saccharomyces cerevisiae, aspergillus niger, trichoderma pseudokoningii, phanerochaete chrysosporium, streptomyces alboloris, bacillus mucilaginosus, trichoderma harzianum, paecilomyces lilacinus, streptomyces griseus and the like, can effectively activate the microbial activity in the crop straw decomposing agent, keeps micro environments such as PH value, humidity, temperature and the like suitable for the microbial activity in the crop straw decomposing agent, and promotes the rapid and effective degradation of components such as cellulose, lignin and the like of the crop straws. The method is easy to implement, simple and convenient to operate, stable in component dispersion, ecological, environment-friendly, free of environmental pollution and convenient to popularize and apply.
An auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in percentage by mass (in a better range):
Figure BDA0001744856630000031
Figure BDA0001744856630000041
an auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in percentage by mass (in a good range):
Figure BDA0001744856630000042
an auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in percentage by mass (the best range):
Figure BDA0001744856630000043
an auxiliary agent of a crop straw decomposing inoculant is prepared from the following raw materials in percentage by mass (in an optimal range):
Figure BDA0001744856630000044
Figure BDA0001744856630000051
an auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in percentage by mass (optimal value):
Figure BDA0001744856630000052
in the eight raw materials of the auxiliary agent of the crop straw decomposition agent, aureobasidium polysaccharide, nano-silica, potassium humate and lauroyl glutamic acid in proper proportion are four most critical components, wherein the mass ratio of the aureobasidium polysaccharide, the potassium humate and the nano-silica is 2: 1, the mass ratio of potassium humate to lauroyl glutamic acid is 2: 1. the core proportion of the aureobasidium pullulans polysaccharide and the potassium humate to the nano silicon dioxide is mainly used for generating a surfactant and biogas, activating the activity of endogenous and exogenous microorganisms in a resting state, stimulating the growth and metabolism of beneficial microorganisms, inhibiting the growth of unfavorable bacteria and promoting the change of a flora structure. The core proportion of the potassium humate and the lauroyl glutamic acid has the effects of promoting the enzyme activity of microorganisms, promoting mass propagation of bacteria inhibited from growth due to nutrition deficiency by using the core proportion because beneficial bacteria in a soil environment are not abundant in type and quantity and the original poor nutrition environment of flora, and improving the adaptability and the immune resistance of the microorganisms to the environment.
A preparation method of an auxiliary agent of a crop straw decomposition agent comprises the following steps:
(1) weighing aureobasidium pullulans polysaccharide, nano silicon dioxide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate, monopotassium phosphate and distilled water according to a certain proportion for later use;
(2) weighing the raw materials in the step (1) according to the mass percentage of the preparation amount, mixing the aureobasidium polysaccharide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate and monopotassium phosphate powder, adding 35-45% of distilled water by mass ratio, and uniformly mixing to obtain a mixture;
(3) and (3) dissolving the mixture obtained in the step (2) and nano silicon dioxide by using 2-3ml of 75% (v/v) alcohol, slowly pouring the mixture into the solution, uniformly stirring the solution, treating the solution under ultrasonic waves for 10-15min, adjusting the pH value to 5.6-7.0 by using dilute sulfuric acid after all the precipitate is dissolved, adding the residual distilled water (mass ratio) of 23-37.7% to a constant volume, and preparing the auxiliary agent of the crop straw decomposition agent.
Among the technical measures of the three steps, the most important is the step (3), which mainly solves the problem of mutual solubility of nano-silica and solutions of other components on the one hand and solves the problem of chelating of nano-silica with aureobasidium pullulans and potassium humate on the other hand, the ultrasonic technology is used for rapidly changing the nano-silica from being dissolved in 75% (v/v) alcohol to being dissolved in the solution in the step (2), meanwhile, the ultrasonic treatment for 10-15min can promote the chelating of the nano-silica with the aureobasidium pullulans and the potassium humate to form a stable solution, and the pH value is adjusted to 5.6-7.0 to form a long-term stable state. Compared with the prior art, the preparation method adopts an ultrasonic technology, can quickly dissolve the nano silicon dioxide, and can fully combine the nano silicon dioxide, the aureobasidium pullulans and the potassium humate to form a stable solution through the ultrasonic time obtained through long-term tests.
In 2015-2017, the applicant researches the synergistic effect of the auxiliary agent on the decomposition agent. As can be seen from Table 1, the decomposition rates of different decomposition agents after 35 days of treatment on soybean and corn straw are respectively between 48.6-52.1% and 42.9-51.0%, but after the treatment of the decomposition agents and the auxiliary agents, the decomposition rates respectively reach more than 76% and 73%; after soybean and corn straws are treated by different single decomposition agents for 45 days, the decomposition rate is only about 63% and about 58%, and after the soybean and corn straws are treated by the decomposition agents and the auxiliary agents, the straw decomposition rate can reach about 90% after 45 days. Moreover, it can be seen from table 2 that the yield of the succeeding crop rape and wheat after the addition of the additive of the present invention to the decomposing agent was increased by 11.4% and 12.1%, respectively, compared to the treatment with the additive-free decomposing agent. The auxiliary agent of the invention can not only accelerate the straw decomposition speed and improve the straw decomposition rate, but also greatly increase the yield of the afterculture crops.
Table 1. straw decomposition rate change of different straw decomposition agents after adding the auxiliary agent
Figure BDA0001744856630000061
TABLE 2 influence of straw decomposition agent + adjuvant on yield of succeeding crop
Figure BDA0001744856630000071
Compared with the prior art, the invention has the following advantages and effects:
the mixture has a reasonable formula, is convenient to use and wide in applicability, can effectively activate the activity of microorganisms in the crop straw decomposing inoculant, maintains micro-environments such as pH value, humidity and temperature suitable for the activity of the microorganisms in the crop straw decomposing inoculant, and promotes the rapid and effective degradation of components such as cellulose and lignin of the crop straws. The method is easy to implement, simple and convenient to operate, stable in component dispersion, ecological, environment-friendly, free of environmental pollution and convenient to popularize and apply. The effect is mainly shown in the following aspects:
(1) the application range is wide. The auxiliary agent is suitable for the activation and propagation of almost all biological strains such as candida tropicalis, aspergillus oryzae, trichoderma viride, bacillus subtilis, actinomycetes, trichoderma harzianum, saccharomycetes, bacillus subtilis, saccharomyces cerevisiae, aspergillus niger, trichoderma pseudokoningii, phanerochaete chrysosporium, streptomyces alboloris, bacillus mucilaginosus, trichoderma harzianum, paecilomyces lilacinus, streptomyces griseus and the like contained in the currently reported straw decomposition agent, can quickly and obviously improve the activity of the biological strains, and further promotes the quick decomposition and degradation of crop straws.
(2) Is suitable for many crops. The auxiliary agent has the functions of adhering cells, degrading cell walls and diffusing intercellular spaces, and has good adhesion, degradation and loosening effects on lignin and cellulose cells in various crop straws of rape, soybean, rice, cotton, sesame and the like, so that the permeability of various crop straw decomposition agents is remarkably improved, and the degradation of the crop straws is accelerated.
(3) The effect is obvious. The auxiliary agent can fully absorb and utilize a small amount of water in the environment under the conditions of drought, low temperature and the like which are not beneficial to the degradation of the crop straws, maintain the humidity of the straws, increase the internal temperature of the straws, expand crop straw cells and improve the activity of microorganisms in the decomposition agent, thereby obviously improving the decomposition effect and speed of the crop straws.
(4) Ecological environmental protection and no pollution. All the raw material components adopted in the auxiliary agent are pollution-free components, and the auxiliary agent is environment-friendly and pollution-free.
Drawings
FIG. 1 is a schematic diagram showing the effect of different straw decomposition agent additive treatments on the decomposition rate of rice straw.
FIG. 2 is a schematic diagram showing the influence of different straw decomposition agent additive treatments on the decomposition rate of rape straws.
The attached drawings 1 and 2 are effect comparison tests of the additive and the additive which are not added in the decomposing agent, the attached drawing 1 is a rice straw decomposing comparison test of 2015-2016 in prowl bases of oil farms in China, and results show that different types of decomposing agents can remarkably accelerate the straw degradation rate, the decomposing rate of the additive which is added in the decomposing agent can reach about 50% after 30 days, the decomposing rate of the additive which is added in the decomposing agent can reach about 90% after 40 days, and the decomposing rate of the additive which is not added in the decomposing agent is only about 40% after 40 days, namely the decomposing rate of the additive which is added in the decomposing agent is at least doubled. Similar results were obtained in 2016-2017 experiments on the decomposition of rape stalks in Hanchuan base of oil institute of agricultural academy of China (FIG. 2).
Detailed Description
Example 1:
an auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in parts by mass:
Figure BDA0001744856630000081
a preparation method of an auxiliary agent of a crop straw decomposition agent comprises the following steps:
(1) respectively taking aureobasidium pullulans polysaccharide, nano silicon dioxide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate, monopotassium phosphate and distilled water for later use;
(2) weighing the raw materials in the step (1) according to the mass percentage of the preparation amount, mixing the aureobasidium polysaccharide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate and monopotassium phosphate powder, adding distilled water with the mass ratio of 35% for dissolving, and uniformly mixing to obtain a mixture;
(3) dissolving the mixture obtained in the step (2) and the nano silicon dioxide by using 2-3ml of alcohol, slowly pouring the solution into the solution, uniformly stirring the solution, putting the solution into ultrasonic waves for treatment for 10 or 12 or 14 or 15min, adjusting the pH value of the solution by using dilute sulfuric acid after all precipitates are dissolved, adding the remaining 36.4 mass percent of distilled water to fix the volume, wherein the pH value is 5.6 or 5.8 or 6.0 or 6.2 or 6.5 or 6.7 or 6.9 or 7.0; the auxiliary agent of the crop straw decomposition agent is prepared.
The nano silicon dioxide obtained by the specific embodiment is rapidly dissolved, and the ultrasonic time obtained by a long-term test enables the nano silicon dioxide, the aureobasidium pullulans and the potassium humate to be fully combined, so that stable auxiliary agent mixed liquor is obtained.
An auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in percentage by mass:
Figure BDA0001744856630000091
the procedure was the same as in example 1.
This is further illustrated by the following tests.
Research on the degradation effect of the straw decomposition agent by aid of the straw decomposition agent:
rice straw maturity test: the test was carried out in the Yangchi base of the institute for oil crops, national academy of agricultural sciences of Wuhan Yangho in 2015-2016. 3 kinds of decomposing agents are randomly selected and purchased in the market, and are respectively: hubei Fengchi microorganism-decomposing agent (No. 1 decomposing agent), Wuhan Scheffu biological straw decomposing agent (No. 2 decomposing agent), Henan Bao melt BM bacterial agent-straw decomposing agent (No. 3 decomposing agent). The test was set up with 6 treatments. And (3) treatment A: no. 1 decomposing inoculant and auxiliary agent; and (B) treatment: no. 2 decomposing inoculant and auxiliary agent; and C, treatment: no. 3 decomposing inoculant and auxiliary agent; control a: no. 1 decomposing agent; control B: no. 2 decomposing inoculant; control C: no. 3 decomposing agent. The amount of the decomposing inoculant is 30kg/hm2Mixing with 600kg/hm of compound fertilizer2Uniformly spreading the mixture on rice straw after harvesting rice, and treating A-C according to 3L/hm2Adding 300L of water (200 ml of the auxiliary agent per mu and 20L of water) and uniformly spraying the mixture on the rice straws. Then ploughing and burying the straws, the decomposing agent, the compound fertilizer, the auxiliary agent and the like together underground. Then calculating the straw decomposition amount and the straw decomposition rate.
The straw decomposition amount refers to the relative percentage content of straw decomposition and is expressed by the straw decomposition percentage. The straw decomposition percentage is 100 x (initial straw quality-end straw quality) per initial straw quality. Straw decomposition rate: v ═ Y × (a-B)/(a × T). In the formula, V is the decomposition rate of the straws (g.g-1. a-1), Y is 365 (d.a-1), A is the initial mass of the straws (g) at the stage, B is the final mass of the straws (g), and T is the decomposition time (d). See fig. 1 for the relevant information.
Rape straw rotten test: the test was carried out in 2016-2017 at the Hanchuan test base of the institute of oil crops, academy of agricultural sciences. 3 kinds of decomposing agents are randomly selected and purchased in the market, and are respectively: a biological leavening agent (No. 4 decomposition agent) created by Beijing Zhonglong, an organic material decomposition agent (No. 5 decomposition agent) in Henan Yu Yuan garden of Hunan, and a straw decomposition agent (No. 6 decomposition agent) of Thai grain of Hunan. The test was set up with 6 treatments. And D, processing: no. 4 decomposing inoculant and auxiliary agent; and E, processing: no. 5 decomposing inoculant and auxiliary agent; and F, treatment: no. 6 bean curdA curing agent and an auxiliary agent; control D: no. 4 decomposing agent; control E: no. 5 decomposing agent; control F: no. 6 decomposing inoculant. The amount of the decomposing inoculant is 30kg/hm2Mixing with 600kg/hm of compound fertilizer2After being mixed, the mixture is evenly spread on rape straws harvested by a combine harvester for one time, and for the treatment D-F, the mixture is evenly sprayed on rice straws according to 3L/hm2 and 300L of water (200 ml of auxiliary agent per mu and 20L of water). Then ploughing and burying the straws, the decomposing agent, the compound fertilizer, the auxiliary agent and the like together underground. Then calculating the straw decomposition amount and the straw decomposition rate. See fig. 2 for a related situation.
Meanwhile, the auxiliary agent of the crop straw decomposing inoculant is also tested and verified for a plurality of years of multi-point and multi-crop and a plurality of decomposing inoculant combinations in the filial Chang, the Jiujiang and the Anhui turnip lake in Hubei, and meanwhile, comparison is carried out, and the effect condition is described in the invention content.
In conclusion, the auxiliary agent of the crop straw decomposition agent has the characteristics of obvious effect, low pollution, low cost, wide applicability and the like. With the increasingly prominent environmental protection problem in China in recent years, the straw treatment has great significance for relieving the environmental pollution problem in rural areas in China, and simultaneously, the crop straws can effectively improve the land quality in China, so the preparation of the invention plays an important role in promoting the improvement of the rural environment in China, the sustainable development of farmlands and the like. Moreover, the invention has wide raw material source, simple production process, safety and easy operation, can effectively reduce the input cost of crops, improve the decomposition speed and effect of the crop straw decomposition agent and increase the planting benefit of farmers. Compared with other similar products, the auxiliary agent of the crop straw decomposition agent also has the following advantages:
(1) greatly improving the soil quality. The auxiliary agent of the crop straw decomposition agent contains a component for promoting the activation of beneficial microorganisms in soil, can effectively activate the beneficial microorganisms in the soil and promote the improvement of soil microorganisms and enzyme activity, and meanwhile, the auxiliary agent of the crop straw decomposition agent can also obviously improve the content of microbial carbon and soil soluble carbon, promote the release of nutrient elements such as nitrogen, phosphorus, potassium and the like which are difficult to be absorbed by plants in the soil, and promote the improvement and sustainable utilization of the soil quality.
(2) Reducing the planting cost of farmers. The auxiliary agent of the crop straw decomposition agent can activate beneficial microorganisms in soil, promote nutrient elements which are difficult to be absorbed by plants in the soil to be absorbed by the plants, and promote the growth of plant root systems and improve the absorption of the nutrient elements by the plants, so that the fertilizing amount of farmers can be obviously reduced, and the planting cost is further reduced.
(3) Greatly improves the yield and the quality of the afterreap crops. The auxiliary agent can obviously improve the content of microbial carbon and soil soluble carbon, and promote the release of various nutrient elements such as nitrogen, phosphorus, potassium and the like which are difficult to be absorbed by plants in the soil, so that the nutrition in the soil is more balanced, and the yield and the quality of the succeeding crops can be effectively improved. Meanwhile, the auxiliary agent of the crop straw decomposition agent also contains nutrient components and growth factors for crop growth, so that the yield and the quality of crops can be effectively improved. Therefore, the application of the preparation of the invention also plays an important role in improving the yield and the quality of the afterculture crops.
(4) Effectively prevent diseases, pests and weeds of succeeding crops. On one hand, the preparation contains chemical inducing factors for improving the resistance of crops, and can effectively induce the activity of a plant immune system; on the other hand, the number of beneficial microorganisms in the soil is increased, so that the occurrence of plant diseases and insect pests in the soil is inhibited.
(5) Low cost and wide application. The product of the invention has wide raw material source and lower cost. On the applicable crop range, the straw-stalk composite biological decomposition agent can be widely applied to straws of various crops such as rice, wheat, cotton, rape, soybean and the like, and has a better promoting effect on the present different decomposition agents.

Claims (3)

1. An auxiliary agent of a crop straw decomposition agent is prepared from the following raw materials in parts by mass:
Figure FDA0003151849130000011
a preparation method of an auxiliary agent of a crop straw decomposition agent comprises the following steps:
A. weighing aureobasidium pullulans polysaccharide, nano silicon dioxide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate, monopotassium phosphate and distilled water according to a certain proportion for later use;
B. weighing the raw materials in the step (A) according to mass percent, mixing the aureobasidium pullulans polysaccharide, potassium humate, lauroyl glutamic acid, ammonium carbonate, manganese sulfate and monopotassium phosphate powder, adding 35-45% of distilled water by mass ratio, and uniformly mixing to obtain a mixture;
and C, dissolving the mixture obtained in the step (B) and nano silicon dioxide by using 2-3ml of 75% alcohol v/v, pouring the solution into the solution, uniformly stirring the solution, treating the solution under ultrasonic waves for 10-15min, adjusting the pH value to 5.6-7.0 by using dilute sulfuric acid after all the precipitate is dissolved, adding 23-37.7% of distilled water in mass ratio to the solution to a constant volume, and preparing the auxiliary agent of the crop straw decomposition agent.
2. The auxiliary agent of the crop straw decomposition agent according to claim 1, wherein:
Figure FDA0003151849130000012
Figure FDA0003151849130000021
3. the auxiliary agent of the crop straw decomposition agent according to claim 1, wherein:
Figure FDA0003151849130000022
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RU2741090C1 (en) * 2020-09-14 2021-01-22 Общество с ограниченной ответственностью «РОСТОДАР» Method of producing an organomineral additive

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CN107892625A (en) * 2018-01-19 2018-04-10 青岛三福有机复合肥料有限公司 A kind of selenium-rich environment-friendlybio-organic bio-organic fertilizer and preparation method thereof

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CN102020512A (en) * 2010-11-11 2011-04-20 中国科学院遗传与发育生物学研究所 Rapid decomposition method for returning summer maize straws
CN105523849A (en) * 2016-01-28 2016-04-27 宿州天雨养殖(集团)有限公司 Fermented fertilizer produced from chicken manure and soybean straw used as raw materials
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