湖南农业大学学报（自然科学版）2018，Vol.44Issue(3)：295-300,6.DOI:10.13331/j.cnki.jhau.2018.03.012
有机无机肥配施对双季稻田土壤微生物和碳库的影响
Effect of combined application of organic and inorganic fertilizers on soil microbial and carbon pool in double rice paddy field
摘要
Abstract
To provide scientific basis for rational fertilization in double rice, effects of organic-inorganic fertilizer application on soil enzyme activities, microorganism activities, microbial biomass carbon (SMBC) content, microbial biomass nitrogen (SMBN) content, organic matters content and carbon pool management index were studied in double rice paddy field for four-year experiments. Six kinds of fertilizers were applied in this study, 1) without fertilizer(WF), 2)without N (WN), 3) chemical fertilizer only (CF), 4) pig manure alternative 20％ N fertilizer (ZF), 5) pig manure compost alternative 20％ N fertilizer (DF), 6) biogas slurry and biogas residue alternative 20％ N fertilizer (ZYF). The results showed that soil quality were differences among different organic-inorganic applications with the best performance from DF treatment. Compared with CF treatment after 4 years, soil culturable amount of bacterial, fungi, actinomyces, the contents of the SMBC and SMBN in DF treatment were increased by 67.94％, 50.30％, 55.51％, 17.96％ and 50.17％ respectively, and the activities of soil phosphatase, urease, invertase and cellulase were increased by 18.19％, 7.85％,73.47％ and 105.00％. In addition, the contents of soil total organic and activity organic and carbon pool management index were increased by 15.17％, 58.40％ and 71.98％. In conclusion, with pig manure compost-inorganic fertilizer application, soil enzyme activities were significantly improved, and the amount of culturable bacterial, fungi and actinomyces were increased significantly and also the contents of the SMBC, SMBN and carbon pool management index were highly promoted. Thus, organic manure and chemical fertilizers combined application, especially DF treatment, is helpful to enlarge soil carbon pool and improve soil quality.关键词
双季稻田/有机无机肥配施/土壤酶/土壤微生物/土壤碳库Key words
double rice paddy field/organic-inorganic fertilizer application/soil enzyme activity/soil microorganism/carbon pool分类
农业科技引用本文复制引用
姜利红,谢桂先,刘强,荣湘民,向秀媛,李波..有机无机肥配施对双季稻田土壤微生物和碳库的影响[J].湖南农业大学学报（自然科学版）,2018,44(3):295-300,6.基金项目
国家"十二五"科技支撑计划项目(2012BAD15B04,2014BAC09B01) （2012BAD15B04,2014BAC09B01）
湖南省高校创新平台开放基金项目(14K047,14K048) （14K047,14K048）
