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CN-121970834-A - Method for improving digestibility of alfalfa silage in saline-alkali soil

CN121970834ACN 121970834 ACN121970834 ACN 121970834ACN-121970834-A

Abstract

The invention provides a method for improving the digestibility of alfalfa silage in saline-alkali soil, which comprises the steps of (1) dressing organic fertilizer and biological pesticide in alfalfa production, (2) cutting up harvested alfalfa raw materials, controlling the moisture content, and inoculating lactobacillus paracasei and/or lactobacillus plantarum microbial inoculum for silage to obtain the alfalfa silage with improved digestibility. The method mainly improves the digestibility and the conversion rate of the alfalfa silage in the saline-alkali soil through field management technology and subsequent silage additive optimization. Firstly, the quality of alfalfa in saline-alkali soil is improved through the cooperation of the organic fertilizer and the biological pesticide, and then the fiber digestibility is improved through the dosages of the organic fertilizer and the biological pesticide with different concentrations, so that the alfalfa silage digestibility is improved.

Inventors

  • WU ZHE

Assignees

  • 中国农业大学

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. A method for improving the digestibility of alfalfa silage in saline-alkali soil, comprising the steps of: (1) Dressing organic fertilizer and biological pesticide in alfalfa production; (2) Cutting the harvested alfalfa raw materials, controlling the moisture content, and inoculating lactobacillus plantarum (Lactobacillus plantarum) microbial inoculum for silage to obtain alfalfa silage with improved digestibility; The biological pesticide in the step (1) is beauveria bassiana biological insecticidal wettable powder, and the effective component is beauveria bassiana (Beauveria bassiana); Preferably, the alfalfa is saline-alkali soil planted alfalfa.
  2. 2. The method of claim 1, wherein the organic fertilizer in the step (1) comprises the components of organic matters not less than 30%, N+P 2 O 5 +K 2 O not less than 4%, wherein the mass ratio of N to P 2 O 5 :K 2 O is 1:1:2, wherein the percentage is the mass percentage, and the pH of the organic fertilizer is not more than 8.5; preferably, the organic matter is more than or equal to 50 percent.
  3. 3. The method of claim 2, wherein the organic fertilizer is applied in an amount of 3000 kg/ha.
  4. 4. The method according to claim 1, wherein the fungus content of beauveria bassiana in the biopesticide of step (1) is 150 hundred megaspores/g.
  5. 5. The method according to claim 4, characterized in that the biopesticide is applied in an amount of 750-1500 g/ha, preferably 1125 g/ha.
  6. 6. The method according to claim 1, wherein the organic fertilizer and the biological pesticide are applied in the step (1) by applying the organic fertilizer mainly at the second or subsequent stubble of each year, applying the fertilizer again and additionally every two harvests, and/or, The application of the biopesticide is mainly based on the local pest occurrence law, and the biopesticide is sprayed in the larval stage or when the occurrence of pests is found.
  7. 7. The method according to any one of claims 1 to 7, wherein the step (2) comprises cutting the harvested alfalfa raw material, controlling the moisture content to be 50-70%, inoculating lactobacillus paracasei and/or lactobacillus plantarum bacteria agent into the cut alfalfa raw material, and ensiling the cut alfalfa raw material at an average temperature of 0-40 ℃ for 30-360 days to obtain alfalfa silage; preferably, the preservation number of the lactobacillus plantarum is CGMCC No. 33705.
  8. 8. The method of claim 7, wherein the microbial inoculum has a microbial content of 10 5 -10 6 cfu/g.
  9. 9. Alfalfa silage obtainable by the process according to any one of claims 1 to 8.
  10. 10. Use of the alfalfa silage of claim 9 in animal farming; The animals include cattle and sheep.

Description

Method for improving digestibility of alfalfa silage in saline-alkali soil Technical Field The invention relates to the field of silage, in particular to a method for improving the digestibility of alfalfa silage in saline-alkali soil. Background Saline-alkali soil is a land resource which is not fully utilized in China, and alfalfa planted in the saline-alkali soil generally has the problems of low yield and low digestibility. The digestibility improvement in the silage at present mainly depends on the effect of additives, and the adopted technical means is relatively single. In order to improve the digestibility of alfalfa in saline-alkali soil, systematic research and development of a method capable of effectively improving the digestibility of alfalfa in saline-alkali soil is needed. Disclosure of Invention The invention aims to provide a method for improving the digestibility of alfalfa silage in saline-alkali soil. Topdressing and pesticide application are one of the important field management measures in alfalfa production. However, the optimal application management schemes of specific types, application amounts and the like of fertilizers and pesticides are not clear, and further studies are still required to be conducted in order to obtain more accurate conclusions. The invention determines the optimal fertilizer and pesticide application management technology by applying different treated fertilizers and spraying different treated pesticides, and measuring and analyzing the nutritional quality of alfalfa of different stubble times. To achieve the object of the present invention, in a first aspect, the present invention provides a method for improving the digestibility of alfalfa silage in saline-alkali soil, the method comprising: (1) Topdressing organic fertilizer and biological pesticide in alfalfa (preferably alfalfa planted in saline-alkali soil, more preferably alfalfa cut for the first time and the second time after topdressing, more preferably harvesting in the bud period) production; (2) Cutting the harvested alfalfa raw materials, controlling the moisture content, and inoculating lactobacillus plantarum (Lactobacillus plantarum) microbial inoculum for silage to obtain the alfalfa silage with improved digestibility. The biological pesticide in the step (1) is beauveria bassiana biological insecticidal wettable powder, and the effective component is beauveria bassiana (Beauveria bassiana). Further, the organic fertilizer in the step (1) comprises the following components of more than or equal to 30% of organic matters, more than or equal to 4% of N+P 2O5+K2 O (preferably more than or equal to 5% of N+P 2O5+K2 O), wherein the mass ratio of N to P 2O5:K2 O is 1:1:2, wherein the percentage is the mass percentage, and the pH value of the organic fertilizer is less than or equal to 8.5; preferably, the organic matter is more than or equal to 50 percent. Further, the applied amount of the organic fertilizer was 3000 kg/ha. Further, the fungus content of beauveria bassiana in the biological pesticide in the step (1) is 150 hundred megaspores/g; preferably, beauveria bassiana biocidal wettable powder (e.g., available from microtitex biotechnology limited company in Ningxia, cat No. PD 20141407) is used. Further, the biopesticide is applied in an amount of 750-1500 g/ha, preferably 1125 g/ha. Further, the organic fertilizer and the biological pesticide are applied in the step (1), wherein the application of the organic fertilizer is mainly started at the second stubble or the subsequent stubble each year, and the additional fertilization is carried out again for each two-stubble harvesting; the application of the biopesticide is mainly based on the local pest occurrence law, and the biopesticide is sprayed in the larval stage or when the occurrence of pests is found. Further, the step (2) comprises cutting the harvested alfalfa raw materials, controlling the moisture content to be 50-70%, inoculating lactobacillus paracasei and/or lactobacillus plantarum microbial inoculum (the microbial content is 10 5-106 cfu/g), and ensiling for 30-360 days at 0-40 ℃ to obtain the alfalfa silage. Preferably, the lactobacillus plantarum is Lactobacillus plantarum Wuzhe, the strain is preserved in China general microbiological culture Collection center (China Committee for culture Collection), north Star, west way 1, 3, and 3 days of microbiological research institute, national academy of sciences, postal code 100101, preservation number CGMCC No. 33705, and preservation date 2025, 3, month and 3 days. In a second aspect, the present invention provides alfalfa silage prepared by the method. In a third aspect, the invention provides the use of said alfalfa silage in animal farming. The animals include, but are not limited to, cattle and sheep. By means of the technical scheme, the invention has at least the following advantages and beneficial effects: The method mainly improves the digestibility and the conversion