农业资源与环境学报Issue(3)：305-311,7.DOI:10.13254/j.jare.2014.0320
不同秸秆还田方式对玉米根际土壤微生物及酶活性的影响
Effects of Different Straw Returning Modes on the Soil Microorganism and Enzyme Activity in Corn Field
摘要
Abstract
Straws contain a large amount of organic matter and nitrogen, phosphous, potassium and different microelements. Straw-returning becomes one of the most important measures to replace the traditional organic fertilizer and increase the soil organic matter. As the bond be-tween next stubble crops and soil microorganism, returned straws play an important role in underground rhizosphere microorganisms environ-ment. In this study, the effects of different straw returning modes on the soil microorganism and enzyme activity were investigated. The experi-ment included four different treatment:the soil of continuous-cropping with straw mulching(CT1), the soil of continuous-cropping with straw buried(CT2), the soil of alternate-cropping with straw mulching(T1), the soil of alternate-cropping with straw buried(T2). Corn was plant-ed in the above treatments and determined the soil microorganism and enzyme activity at the different growth stage. The results showed that under the same straw-returning, the microbial biomass carbon content, corn microorganism and soil enzyme activities of T1 and T2 were high-er than those of CT1 and CT2. In the soil of continuous-cropping, compared with the straw-mulching, the straw-buried increased significant-ly in the numbers of bacteria, actinomycetes, ammonifying bacteria, aerobic nitrogen-fixing bacteria, nitrifying bacteria and the activities of soil urease and invertase. While in the soil of alternate-cropping, the returning mode of straw had little impacts on the numbers of fungi, am-monifying bacteria, aerobic nitrogen-fixing bacteria and nitrifying bacteria and activities of urease and catalase. It is concluded that the straw-buried can improve the soil microorganisms in the soil of continuous-cropping compared with the straw-mulching.关键词
玉米/秸秆还田/土壤微生物/土壤酶活性Key words
corn/straw returning/soil microorganism/soil enzyme activity分类
农业科技引用本文复制引用
于寒,梁烜赫,张玉秋,孙杨,吴春胜,谷岩..不同秸秆还田方式对玉米根际土壤微生物及酶活性的影响[J].农业资源与环境学报,2015,(3):305-311,7.基金项目
国家自然科学基金项目（31000687）；吉林省科技厅自然基金项目（20140101154JC）；吉林省教育厅项目（2014046）；国家科技支撑计划 （）
