Effects of Different Tillage on Soil Aggregates Size Distribution and Stability of Winter-wheat Field

YU Ai-zhong; HUANG Gao-bao; CHAI Qiang; YAN Yong-xin

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Effects of Different Tillage on Soil Aggregates Size Distribution and Stability of Winter-wheat Field

更新时间：2024-11-07

- Effects of Different Tillage on Soil Aggregates Size Distribution and Stability of Winter-wheat Field
- Vol. 25, Issue 6, (2011)
- 作者机构：
  
  甘肃省干旱生境作物学重点实验室/甘肃农业大学农学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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YU Ai-zhong, HUANG Gao-bao, CHAI Qiang, et al. Effects of Different Tillage on Soil Aggregates Size Distribution and Stability of Winter-wheat Field[J]. 2011, 25(6).
DOI：

YU Ai-zhong, HUANG Gao-bao, CHAI Qiang, et al. Effects of Different Tillage on Soil Aggregates Size Distribution and Stability of Winter-wheat Field[J]. 2011, 25(6). DOI：

摘要

在长期定位试验基础上研究传统耕作(T)、免耕不覆盖(NT)和免耕秸秆覆盖(NTS)3种耕作措施对土壤团聚体分布及其稳定性的影响。结果表明

3种耕作措施连续实施5年后

使耕层土壤容重显著增加

免耕秸秆覆盖显著增加了表层土壤有机质。NTS处理>0.25mm团聚体含量(R0.25)显著高于T处理和NT处理的

同时也明显高于2004年的背景值

0-30cm土层范围内平均较T处理和NT处理分别高14.88%和6.40%;免耕和免耕秸秆覆盖可显著改善土壤耕层(0-20cm)团聚体的水稳定性。NTS处理0-30cm的不稳定团粒指数(ELT)与2004年背景值比较

平均下降了1.88%。说明相对于传统耕作

免耕秸秆覆盖减少了机械的破坏作用

增加了土壤有机质含量

促进耕层团聚体形成

并提高了其稳定性。

Abstract

Based on a long-term field experiment

the effects of conventional tillage(T)

no-tillage without wheat stubble mulching(NT) and no-tillage with wheat stubble mulching(NTS) on soil aggregates size distribution and stability of winter-wheat field were studied.The results showed that NTS significantly increased the soil bulk density of plough layer and the organic matter of top layer.Compared with the background values in 2004

macro-aggregates significantly increased in NTS

was 14.88% and 6.40% higher than that...

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Related Institution

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