摘要
通过对坡耕地保护性耕作水温效应的研究,为水蚀风蚀交错区提供多种有效的耕作措施,并为当地农田采用合理的耕作措施提供依据。运用定位监测和数理统计的方法,研究黄土高原水蚀风蚀交错带坡耕地传统耕作与免耕、秸秆覆盖、地膜覆盖、起垄地膜覆盖、套种5种保护性耕作措施陡坡地的水温效应。结果表明,秸秆覆盖、免耕、地膜覆盖都能够显著提高表层水分含量,而深层免耕水分含量较低,秸秆覆盖水分含量较高;各保护性耕作都有在气温低时保温和在高温时降温的作用。各保护性耕作对水温有正效应,其中秸秆覆盖更优于其他保护性耕作。
Studying the effects of different tillage on soil moisture and temperature in sloping farmland will provide some effective tillage measures and the credible background for reasonable tillage usage in the wind-water erosion crisscross region.The methods of positioning monitoring and Statistics were served to study the effects of conventional tillage and five conservation tillage on soil moisture and temperature in sloping farmland of the wind-water erosion crisscross region.The result shows that,straw mulching（SM）,no-tillage（NT） and plastic film mulching（PM） can significantly increased soil moisture in the surface layer,and soil moisture of the deeper layer is lower in NT and higher in SM.All of the conservation tillage can keep the suitable soil temperature at the stages of extremes.Based on soil moisture and temperature,all of the conservation tillage showed positive effects,and SM is better than the other tillage.
出处
《西北农业学报》
CAS
CSCD
北大核心
2011年第7期179-186,共8页
Acta Agriculturae Boreali-occidentalis Sinica
基金
农业公益性行业科研专项(201103001)
国家林业局"948"引进项目(2006-4-11)
关键词
水蚀风蚀交错区
坡耕地
保护性耕作
水温效应
Wind-water erosion crisscross region
Slope land
Conservation tillage
Soil moisture and temperature
