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CN-121990857-A - Composite microbial agent, preparation method, application and system

CN121990857ACN 121990857 ACN121990857 ACN 121990857ACN-121990857-A

Abstract

The invention relates to a composite microbial agent, a preparation method, application and a system, which are prepared from the following raw materials, by weight, 100 parts of fermented and decomposed composite organic carriers, 0.5-5 parts of functional microbial flora, 5-15 parts of functional conditioning agents, wherein the composite organic carriers consist of cotton stalk decomposed substances, agricultural processing residues and livestock and poultry manure, and the functional microbial flora comprises bacillus, actinomycetes and saccharomycetes. The invention not only realizes the recycling utilization of agricultural wastes and reduces the cost, but also ensures that the carriers are rich in organic matters and various nutrients, thereby providing excellent living environment and continuous nutrition supply for functional bacterial groups. A micro-ecological system with complementary functions and synergy is constructed on the flora level, which is fundamentally different from the microbial inoculum of a single strain, and provides a material basis for solving the complex problems of 'saline-alkali coexistence and weak microbial activity' of saline-alkali soil.

Inventors

  • WANG WEIWEI
  • QIAO YAN
  • CHEN XIUQIN
  • ZHAO JINJIE

Assignees

  • 新疆诺瑞夫生物科技有限公司

Dates

Publication Date
20260508
Application Date
20251218

Claims (10)

  1. 1. The compound microbial agent for improving the saline-alkali soil is characterized by being prepared from the following raw materials in parts by weight: 100 parts by weight of fermented and decomposed composite organic carrier; 0.5-5 parts by weight of functional microorganism flora; 5-15 parts by weight of a functional conditioner; the composite organic carrier consists of cotton stalk decomposed matters, agricultural processing residues and livestock and poultry manure; the functional microbial flora comprises bacillus, actinomycetes and saccharomycetes.
  2. 2. The composite microbial agent according to claim 1, wherein the mass ratio of cotton stalk decomposed matter, agricultural processing residues and livestock manure in the composite organic carrier is (3-5) (1-3) (4-6).
  3. 3. The composite microbial agent of claim 1 or 2, wherein the functional conditioning agent comprises at least one of humic acid, seaweed extract and nano-silicon fertilizer.
  4. 4. The composite microbial agent according to claim 1, wherein the functional microbial flora is obtained by gradient domestication screening in a culture medium with a salt concentration of 3% -8% and a pH of 8.5-10.0.
  5. 5. The composite microbial agent of claim 1, wherein the agent is prepared by a process comprising low temperature granulation, the low temperature granulation being at a temperature no greater than-20 ℃.
  6. 6. A method for preparing the composite microbial agent according to any one of claims 1 to 5, comprising the steps of: (1) Preparing a composite carrier, namely mixing cotton stalks, agricultural processing residues and livestock and poultry manure in proportion, and carrying out high-temperature aerobic fermentation to obtain a cured composite organic carrier; (2) Performing flora propagation, namely performing liquid submerged fermentation propagation on functional microorganism flora in a composite culture medium; (3) Mixing and granulating, namely uniformly mixing the composite organic carrier obtained in the step (1), the bacterial liquid obtained in the step (2) and the functional conditioning agent, and granulating by adopting a low-temperature granulating technology.
  7. 7. The method according to claim 6, wherein in the step (1), the high-temperature aerobic fermentation is performed at 55-65 ℃ for 15-20 days.
  8. 8. The method of claim 6, wherein in step (2), the submerged fermentation propagation is performed in a fermenter under fermentation conditions satisfying at least one of the following parameters: the fermentation temperature is controlled at 30-37 ℃; the pH value of the fermentation liquor is maintained at 6.5-7.5; the stirring speed is controlled to be 150-250rpm; The ventilation is maintained at 0.8-1.2vvm; The dissolved oxygen is kept at 30% -50% saturation.
  9. 9. Use of the composite microbial agent according to any one of claims 1-5 for improving sulfate-chloride type saline-alkali soil.
  10. 10. A saline-alkali soil improvement system, comprising: the composite microbial agent of any one of claims 1-5; And a drip irrigation system for applying the microbial inoculum.

Description

Composite microbial agent, preparation method, application and system Technical Field The invention relates to the technical field of biological fertilizers, in particular to a compound microbial agent, a preparation method, application and a system. Background The current saline-alkali soil in south ARUM has bad environment, the salt content in soil is up to 3% -5%, the pH value is 8.5-10.0, the colonization rate of common bacterial strain is less than 30%, the functions of salt decomposition and growth promotion are also inhibited due to high osmotic pressure, and the improvement effect of bacterial manure is hard to last. Moreover, the existing bacterial fertilizer carrier adopts a single bacterial strain, so that multiple requirements of salt reduction, quality improvement and disease resistance are difficult to be met at the same time, and the superposition problem that saline-alkali soil is barren and crop stress resistance is poor can not be solved. Meanwhile, the widely used strains come from other areas, and have low activity, poor effect, poor synergistic effect of compound bacteria and high large-scale propagation cost under the extreme environment of Xinjiang. The large amount of agricultural wastes such as cotton stalks and the like to be treated in the area has long composting fermentation period due to coarse and hard straw cellulose, and carrier nutrient loss is easily caused by secondary fermentation. Meanwhile, the compatibility of the carrier, the functional strain and the conditioner is poor, part of carrier components can inhibit the activity of the strain, and the compatibility problem of the carrier, the fungus and the conditioner is to be solved. In addition, even if good strains are selected, the traditional fermentation process has low yield and high cost, and is difficult to produce in a large scale and at low cost. The traditional high-temperature granulation ensures that the bacterial strain has high inactivation rate, and can not meet the requirement of 'high viable count' of bacterial manure, and although the high-tower granulation technology can solve the problem, the characteristics of saline-alkali soil and the suitability of bacterial manure in areas are not clear. The Acess saline-alkali soil is mainly sulfate-chloride type, the prior research lacks the information of the influence of the type of saline-alkali soil on the novel biological bacteria organic fertilizer, the adaptive parameters of the soil with different salinization grades and the bacterial fertilizer are not clear, and the accurate allocation of the organic fertilizer is restricted. Therefore, the existing compound microbial agents are inconvenient and defective in terms of method, manufacturing method, processing method and use, and further improvement is needed. In order to solve the problems of the composite microbial agent, the related manufacturers have no great care to solve the problems, but have long not seen that the applicable designs are developed and completed, and the general method, manufacturing method, processing method and composite microbial agent have no suitable methods, manufacturing methods, processing methods and structures to solve the problems, which are obviously the urgent problems to be solved by the related industries. In view of the above-mentioned drawbacks of the conventional composite microbial agents, the present inventors have actively studied and innovated based on years of rich practical experience and expertise in designing and manufacturing such products, and in combination with application of the theory, so as to create a new composite microbial agent, which can improve the conventional composite microbial agents and make them more practical. After continuous research and design and repeated trial and improvement, the invention with practical value is finally created. Disclosure of Invention The invention aims to overcome the defects of the existing compound microbial agent and provide a novel compound microbial agent, and the technical problem to be solved is that the novel compound microbial agent not only realizes the recycling of agricultural wastes, but also reduces the cost, and more importantly, the carriers are rich in organic matters and various nutrients, thereby providing excellent living environment and continuous nutrition supply for functional flora. A micro-ecological system with complementary functions and synergy is constructed on the flora level, the microbial inoculum is fundamentally different from that of a single strain, and a material basis is provided for solving the complex problems of 'saline-alkali coexistence and weak microbial activity' of saline-alkali soil, so that the microbial inoculum is more practical and has industrial utilization value. The invention further aims to provide a preparation method of the compound microbial agent, which aims to solve the technical problems of realizing the resource utilization of agricultural wastes, r