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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (12): 49-53.doi: 10.11924/j.issn.1000-6850.casb2022-0384

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Utilization of Biogas Slurry in Rice Production

CAI Kai(), ZHANG Qi, YAO Li, WANG Hong, LUO Fuxiang, LIN Chaowen   

  1. Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu 610066
  • Received:2022-05-08 Revised:2022-06-22 Online:2023-04-25 Published:2023-04-21

Abstract:

Biogas slurry is formed by fermentation of organic substances. Because of its large quantity and inconvenient treatment, it has become one of the sources of environmental pressure. The utilization of biogas slurry in rice production not only alleviates the pressure on environmental protection, but also improves rice yield and soil quality. It is an effective way for the resource utilization of biogas slurry. Biogas slurry is rich in nutrient elements and microbial secretions, which can provide all kinds of vitamins, auxin and amino acids required by rice. Biogas slurry has the functions of promoting rice growth and controlling rice diseases and insect pests. In seed soaking and fertilization, the use of biogas slurry instead of chemical agents can improve the drug effect and reduce the pollution level, but the application rate varies according to the composition of biogas slurry in different places. By summarizing and analyzing the rational utilization of biogas slurry resources, it is found that biogas slurry can not only improve rice yield and economic benefits, but also reduce chemical pollution, improve soil quality and drive the sustainable development of agriculture, which is of great significance to build the balance of agricultural ecological cycle.

Key words: biogas slurry, rice, resource utilization, safe utilization, sustainable development