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首页> 外文会议>2010 International conference of international conference on combating land degradation in agricultral areas. >The Effects of No-tillage with Mulch on the Soil Phvsical and Chemical Properties
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The Effects of No-tillage with Mulch on the Soil Phvsical and Chemical Properties

机译：免耕覆盖对土壤理化性质的影响

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摘要

The effects of no-tillage with mulch (NT) on soil physical and chemical properties were evaluated in the study by both field experiments and laboratory analysis. Compared with conventional tillage (CT), the longer NT practice was carried out, the higher proportions of water-stable aggregate content were. Data suggested that average soil water content could reach up to 12% under NT, indicating such practice had a more efficient effect on water retention especially during drought periods. Soil organic matter was also increased by 10.7% and 26% in the field which had been managing by NT for 2 years and 5 years, comparing with the fields of CT. Soil total P content was higher than the one in CT filed by 87% as well, however, content of K had a trend of lowering and N content did not change significantly in the field of NT for 5 years. Results also showed that wind erosion on farmland could be controlled by NT practice. Therefore, NT can improve soil quality evidently.
机译：通过田间试验和实验室分析，评价了免耕覆盖物对土壤理化性质的影响。与常规耕作（CT）相比，进行NT的时间更长，水稳性骨料含量的比例更高。数据表明，在北半球下平均土壤含水量可以达到12％，这表明这种做法对保水效果更有效，尤其是在干旱时期。与CT相比，NT处理2年和5年的土壤有机质也分别增加了10.7％和26％。土壤中的总磷含量也比CT提交的高87％，但是，在NT领域，钾含量有降低的趋势，而氮含量在5年内没有明显变化。结果还表明，NT实践可以控制农田的风蚀。因此，NT可以明显改善土壤质量。

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