免耕法对土壤结构影响的研究
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* 国家自然科学基金49704008“农田土壤生态系统耕作调控的模型与机制”;江苏省“八五”重点攻关内容


INFLUENCE OF NO-TILLAGE ON SOIL STRUCTURE
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    摘要:

    通过对江苏省5大农区5个点连续免耕两年后土壤容重收缩性能和破碎强度的测定,结果表明;免耕能改善土壤结构和土壤排水通气状况。体变率与土壤<0.01mm的物理性粘粒和<0.001粘粒含量相关密切;常耕与免耕破碎强度的差值也与粘粒含量有一定的相关。因此,对土壤粘粒含量较高的土壤更不能烂耕烂种和过多的水旋水耙。

    Abstract:

    In this study, soils with 2-year continuous no-tillage treatment were sampled from 5 experimental sites representing 5 agricultural districts in Jiangsu Province. The shrinking property and crushing strength of these soils were measured. Soil structure and drainage state could be improved by no-tillage. There existed close relationship between soil volume change rate and the content of clay with diameters of both 0.01mm and 0.001mm. The difference of soil crushing strength between conventional tillage and notillage was also related to clay content. Therefore, in these agricultural districts or soils with a high clay content, it was more important to pay attention to soil filth and to choose a suitable tillage method.

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刘世平,庄恒扬,陆建飞,沈新平,陈后庆,黄细喜.免耕法对土壤结构影响的研究[J].土壤学报,1998,35(1):33-37. DOI:10.11766/trxb199601180105 Liu Shi-ping, Zhuang Heng-yang, Lu Jian-fei, Shen Xin-ping, Chen Hou-qing, Huang Xi-xi. INFLUENCE OF NO-TILLAGE ON SOIL STRUCTURE[J]. Acta Pedologica Sinica,1998,35(1):33-37.

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  • 收稿日期:1996-01-18
  • 最后修改日期:1997-03-20
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  • 在线发布日期: 2013-02-25
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