秸秆循环还田土壤环境效应变化研究
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S154.4

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国家科技支撑循环农业课题(2012BAB14B05);公益性行业专项课题(201103001-03)


Studies on Soil Environment Changes of Straws Returned into Field
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    摘要:

    为明确秸秆循环还田土壤环境效应变化,筛选合理的秸秆还田方式,于2000年设计了不同秸秆还田方式定位试验,通过对秸秆还田后土壤理化性状分析,结果表明各处理土壤紧实度随深度增加而增加,在45 cm处达到最大值,下层土壤比上层土壤紧实,秸秆还田处理均低于现行耕法;秸秆还田各处理三相结构合理,特别是在20~40 cm优于现行耕法,土壤孔隙增多,渗透能力增强。秸秆还田各处理土壤养分明显改善,特别是有机质含量明显增加,与对照比较提高幅度为0.26~0.74 g/kg。

    Abstract:

    In order to understand effects of straws returned into field on environmental effect of soil, a long-term located experiment about returned straws were designed since 2000 to select the best methods of straws re-turned into field. Soil physical and chemical properties of straws returned into field were analyzed. The resultsshowed that soil compactions of every treatment were increased with increase of depth, the maximum is at the depthof 45 cm. In addition, soil compaction of low layer was higher than upper, and treatments of straws returned into fieldwere lower than conventional tillage. Three-phase ration of soil of 20-40 cm of treatments of straws returned intofield were more rational than conventional tillage. The infiltration capacity of treatment of straws returned into fieldwas improved because of increase of porosities in soil. Moreover, soil nutrients were increased significantly, soil or-ganic matter treatments of returning straws into field compared of conventional tillage and the range of increase werefrom 0.26 to 0.74 g/kg.

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刘武仁,郑金玉,罗洋,郑洪兵,李瑞平,李伟堂.秸秆循环还田土壤环境效应变化研究[J].东北农业科学,2015,40(1):32-36.

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  • 收稿日期:2014-08-21
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  • 在线发布日期: 2024-12-06
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