水土保持研究2017，Vol.24Issue(6)：167-171,178,6.
添加水稻秸秆对不同类型土壤团聚体分布和稳定性的影响
Effects of Application of Rice Straw on Distribution and Stability of Aggregates in Different Soil Types
摘要
Abstract
An indoor incubation experiment of red soil,aquatic soil and mortar black soil under incubation at 28℃C for 120 days was conducted to study effects of application of rice straw on distribution and stability of water-stable aggregates in three soil types.The results showed that the contents of microaggregates(＜250 μm) in three soil types with no-application of rice straw were most and the contents of ＞2 000μm macroaggregates were the least,compared with the control,＞2 000 μm waterstable aggregates significantly increased under the application of rice straw (p＜0.05),while the macroaggregates (＞250 μm) became the most,the macroaggregates (＞250 μm) of red soil,aquatic soil and mortar black soil increased by 35.6％,41.1％ and 22.0％,respectively,compared with the control,the increasing proportion of aquatic soil was the most.At the same time,the mean weight diameter (MWD) and geometric mean diameter (GMD) of water-table aggregates significantly increased (p＜0.05),the value of fractal dimension (D) and unstable aggregate index (ELT) were lower than the control,the structure and erosion resistance of three soil types were obviously improved,while the improvement effects of stability index and aggregate structure of the aquatic soil were the best.The macroaggregates (＞250 μm) and GMD,MWD had the significant positive correlation (p＜0.001).关键词
水稳性团聚体/土壤类型/团聚体稳定性/水稻秸秆Key words
water-stable aggregates/soil type/aggregate stability/rice straw.分类
农业科技引用本文复制引用
刘哲,韩霁昌,陈茜,余正洪,张卫华,高红贝..添加水稻秸秆对不同类型土壤团聚体分布和稳定性的影响[J].水土保持研究,2017,24(6):167-171,178,6.基金项目
资助项目:国家科技支撑计划课题(2014BAL01B01) （2014BAL01B01）
国土资源部公益性行业科研专项项目(201411008-3) （201411008-3）
陕西省重点科技创新团队计划项目(2016KCT-23) （2016KCT-23）
