摘要
试验监测了不同种植茬口和玉米地秋后不同处理下土壤含水量变化情况,监测结果表明,春播前玉米地表层土壤含水量分别比谷子和大豆地表层土壤含水量低55%,52%,其他土层深度的土壤含水量也均为玉米地最低,谷子和大豆地较高;秋后玉米地的4种处理方式中,土壤含水量高低依次为覆膜>灭茬>刨茬>留茬,其覆膜处理的表层土壤含水量达到11.76%,覆膜和灭茬处理的土壤含水量随监测时间的延长变化不大,刨茬和留茬处理土壤含水量都随监测时间的延长而下降。
The measurement result on monitor soil moisture with various plant stubble and different farming treatment in cornfield. The results indicated, the moisture of surface layer soil in cornfield is 2.49%, witch is lower (55%) and 52% than in millet-field and soybean-field. In the other layers, the soil moisture in cornfield is lowest and in millet-field and soybean-field is higher. In cornfield after autumn, the sequence of soil water content under 4 treatments is covering plastic film>destroying stubble>digging stubble>remaining stubble. The soil moisture of the covering plastic film treatment is 11.76%. The soil water content of covering plastic film and destroying stubble does not distinct as time, but the soil water content of digging stubble and remaining stubble decrease.
出处
《水土保持学报》
CSCD
北大核心
2004年第6期179-182,共4页
Journal of Soil and Water Conservation
基金
国家"863"计划重大节水专项项目(2002AA2Z4321)资助
关键词
辽西地区
半干旱地区
春季
播种
土壤墒情
土壤含水量
soil moisture
faming treatment
digging stubble
destroying stubble
remaining stubble
covering plastic film
