Effects of Straw Returning on Soil Enzyme Activity and Stability of Soil Aggregates in Flue-cured Tobacco Field

文献类型： 外文期刊

第一作者： Zhang, Ji-Guang

作者： Zhang, Ji-Guang;Bo, Guo-Dong;Zhang, Zhong-Feng;Shen, Guo-Ming;Gao, Lin;Yu, Hui-Yong;Xu, Jia-Lai;Wang, Yi

作者机构：

关键词： Straw returning;Soil nutrient;Soil enzyme activity;Soil aggregate;Flue-cured tobacco field

期刊名称：INTERNATIONAL CONFERENCE ON ENVIRONMENTAL PROTECTION AND HUMAN HEALTH (EPHH 2014)

ISSN：

年卷期： 2015 年

页码：

收录情况： SCI

摘要： A field experiment from 2009 to 2012 was conducted to study the effect of different amount of wheat straw and maize straw returning on soil nutrients, enzyme activity and stability of soil aggregates of flue-cured tobacco field in China. The results showed that the two straw returning could increase SOC and its related characters. But the maize straw returning had a better effect on them than that of wheat straw using the same amount. The two straw returning could improve four soil enzyme activities with the increasing amount of returning except for the catalase activity in maize straw returning. Moreover, maize straw also had a better effect on soil enzyme activity than wheat straw returning using the same amount. The correlations indicated that alkaline phosphatase activity were significantly negative correlated with soil pH. Sucrase activity and urease activity both were significantly positive correlated with soil available N. Furthermore, Catalase activity was only negative correlated with soil available K significantly. Mean weight diameter (MWD) and geometric mean diameter (GMD) in different amount of maize and wheat straw returning treatments were higher than those in CK treatment. And the more straw returning decreased the more fractal dimension of soil aggregate, but the maize straw returning could increase the stability of soil aggregates better than wheat straw returning at the same amount. Therefore, to increase soil physical, chemical and biological properties in tobacco field, the maize straw returning was better than that of wheat straw returning. This study had important theoretical meaning and practical value to choose rational straw returning to improve soil fertility in tobacco field.

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