Abstract:It is necessary to find a reasonable and effective way to deal with large amounts of biogas residue during biogas production of rice straw. However, the nutrient release following the biogas residue application and vegetable utilization remain ambiguous. In order to determine how biogas residue of rice straw inputs affect soil carbon and nitrogen turnover and consequently vegetable yield and quality, so this study was conducted. The results of incubation experiment showed that soil carbon mineralization, nitrogen immobilization of soil microorganisms and microbial biomass carbon were significantly enhanced by the addition of biogas residue of rice straw. The biogas residue of rice straw released nitrogen more slowly than the commercial organic fertilizer. The results of pot experiment showed that, compared to commercial organic fertilizer, vegetable production was decreased slightly and content of soluble sugar and vitamin C of Chinese cabbage were increased significantly and nitrate content was decreased by biogas residue of rice straw application. Therefore, biogas residue of rice straw application was benefit for vegetable production.
高白茹, 常志州, 叶小梅, 毛正荣, 邹敦强, 杜静, 徐跃定, 张建英. 稻秸沼渣矿化特征及对青菜生长和品质的影响[J]. 中国环境科学, 2012, 32(4): 647-652.
GAO Bai-Ru, CHANG Zhi-Zhou, YE Xiao-Mei, MAO Zheng-Rong, ZOU Dun-Qiang, DU Jing, XU Yue-Ding, ZHANG Jian-Ying. Mineralization characteristics of biogas residues of rice straw and its effect on vegetable growth. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(4): 647-652.