摘要
通过田间试验,研究了稻草还田配施化肥与腐秆菌剂对早稻土壤微生物、酶活性及有机碳组分和产量的影响。结果表明:稻草还田配施化肥与菌剂可以有效地提高土壤细菌、真菌、放线菌数量,增强蔗糖酶、脲酶、过氧化氢酶的活性。与稻草不还田施肥(F)和不施肥(CK)相比,稻草还田配施化肥与菌剂(SFM),提高了土壤不同形态有机碳含量和碳库管理指数,其中活性有机碳、碳库管理指数分别提高了10.33%～28.88%、12.85%～30%;并且因为有利于早稻分蘖,产量增加3.56%～23.29%。可见,稻草还田配施化肥与菌剂,不仅可以提高产量,而且对改善稻田土壤肥力也有重要的作用。
Through field experiment, the effects of straw returning with straw decomposition agent on microbes, enzyme and organic carbon components in early rice soils and its yield were investigated in this paper. The results showed that straw returning with chemical fertilizer as well as microbial agent significantly could not only enhance the quantity of bacteria, fungi and actinomyces in the soil, but only improve the activity of sucrase, urease and catalase. Moreover, comparing to fertilization without straw returning（F） and treatments without fertilizer（CK） when rice straw was returned to the soil with chemical fertilizer and microbial agent （SFM） , the contents of all types of soil carbon and carbon pool management index （CPMI） were both improved, in which the active carbon and CPMI were increased by 10.33% ~ 28.88% and 12.85% ~ 30% ,respectively. Furthermore, it was obvious that straw returning with chemical fertilizer and microbial agent was favorable to tillering of early rice, and the early rice yield was significantly increased by 3.56% - 23.29%. According to the results obtained in this study, it can be concluded that straw returning with chemical fertilizer and microbial agent has the potential to improve the production of crop yield, but also has an important role in ameliorating the soil fertility of paddy.
出处
《核农学报》
CAS
CSCD
北大核心
2012年第9期1317-1321,共5页
Journal of Nuclear Agricultural Sciences
基金
国家科技支撑计划项目(2011BAD16B04)
国家科技支撑计划项目(2012BAD14B14)
江西农业大学自然科学自由申请项目(2010)
关键词
微生物菌剂
稻草还田
土壤微生物
土壤酶
碳库管理指数
产量
microbial agent
straw returning
soil microbe
soil enzyme
carbon pool management index
yield
