耕作措施与秸秆还田对稻麦两熟制农田土壤养分、微生物生物量及酶活性的影响  

Effects of Tillage and Crop Residues Incorporation on Soil Nutrient, Microbial Biomass and Enzyme Activity Under Rice-Wheat Rotation

作　　者：杨敏芳[1] 朱利群[2] 韩新忠[1] 顾克军[3] 胡乃娟[2] 张振文[2] 卞新民[1,2] 

机构地区：[1]南京农业大学资源与环境科学学院,南京210095 [2]南京农业大学农学院,南京210095 [3]江苏省农业科学院农业资源与环境研究所,南京210014

出　　处：《水土保持学报》2013年第2期272-275,281,共5页Journal of Soil and Water Conservation

基　　金：公益性行业(农业)科研专项(201103001)

摘　　要：为寻求适宜当地生产和生态环境的最适耕作措施和秸秆还田方式组合,通过开展2年(2009-2011年)田间试验,研究不同耕作措施和秸秆还田对稻麦轮作农田土壤养分、微生物量碳氮及土壤酶活性的影响。结果表明:无论是翻耕还是旋耕,秸秆还田条件下的土壤养分含量均不同程度地高于秸秆不还田,除速效钾外,差异均达显著水平;两季秸秆均还田处理土壤微生物量碳含量均显著高于两季秸秆均不还田;除旋耕秸秆两季均还田外,旋耕麦季稻秸还田处理土壤微生物量氮含量显著高于其他各处理;与翻耕秸秆不还田相比,翻耕两季秸秆均还田和旋耕两季秸秆均还田均显著提高了土壤脲酶和蔗糖酶活性,其中脲酶提高了10.96%和9.72%,蔗糖酶提高了30.36%和17.87%。In order to find a suitable local production and ecological environment measures which combined crop residues incorporation with tillage method, the paper studied the effects of different tillage and crop residues incorporation on soil nutrient, soil microbial biomass carbon and nitrogen, soil enzyme activity by a two-year（2009--2011） field experiment. The result showed that the content of soil nutrient with crop residues incorporation was higher than no crop residues incorporation either tillage or rotary, in addition to available K, the differences reached significant level. The microbial biomass carbon content with crop residues incorporation in two seasons was significantly higher than no crop residues incorporation. Except rotary with crop residues incorporation in two seasons, rotary with crop residues incorporation in wheat season significantly improved the microbial biomass nitrogen content. Compared to tillage with no crop residues incorporation, tillage and rotary with crop residues incorporation in two seasons could effectively improved the activity of urease and invertase glucose, the urease increased 10.96% and 9.72%, and invertase glucose increased 30.36% and 17.87%.

关 键 词：秸秆还田 耕作措施 土壤养分 微生物量碳和氮 土壤酶活性 

分 类 号：S158.3[农业科学—土壤学] S154.2[农业科学—农业基础科学]