深耕和秸秆还田对土壤微生物及酶活性的影响。
Effects of deep tillage and straw returning on soil microorganism and enzyme activities.
作者信息
Ji Baoyi, Hu Hao, Zhao Yali, Mu Xinyuan, Liu Kui, Li Chaohai
机构信息
Agronomy College, Henan Agricultural Universtiy, Zhengzhou 450002, China ; Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
Institute of Digital Agriculture, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China.
出版信息
ScientificWorldJournal. 2014;2014:451493. doi: 10.1155/2014/451493. Epub 2014 Mar 26.
Two field experiments were conducted for two years with the aim of studying the effects of deep tillage and straw returning on soil microorganism and enzyme activity in clay and loam soil. Three treatments, (1) conventional tillage (CT), shallow tillage and straw returning; (2) deep tillage (DT), deep tillage and straw returning; and (3) deep tillage with no straw returning (DNT), were carried out in clay and loam soil. The results showed that deep tillage and straw returning increased the abundance of soil microorganism and most enzyme activities. Deep tillage was more effective for increasing enzyme activities in clay, while straw returning was more effective in loam. Soil microorganism abundance and most enzyme activities decreased with the increase of soil depth. Deep tillage mainly affected soil enzyme activities in loam at the soil depth of 20-30 cm and in clay at the depth of 0-40 cm. Straw returning mainly affected soil microorganism and enzyme activities at the depths of 0-30 cm and 0-40 cm, respectively.
进行了为期两年的两项田间试验，目的是研究深耕和秸秆还田对黏土和壤土中土壤微生物及酶活性的影响。在黏土和壤土中进行了三种处理：（1）传统耕作（CT），浅耕并秸秆还田；（2）深耕（DT），深耕并秸秆还田；（3）深耕不秸秆还田（DNT）。结果表明，深耕和秸秆还田增加了土壤微生物的丰度和大多数酶的活性。深耕对增加黏土中的酶活性更有效，而秸秆还田对壤土更有效。土壤微生物丰度和大多数酶活性随土壤深度的增加而降低。深耕主要影响壤土20 - 30厘米深度处以及黏土0 - 40厘米深度处的土壤酶活性。秸秆还田分别主要影响0 - 30厘米和0 - 40厘米深度处的土壤微生物和酶活性。
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