[关键词]
[摘要]
在地埋式滴灌条件下,对不同毛管埋深及间距对大田玉米土壤水分迁移规律进行了研究。结果表明,毛管在同一埋设深度时,随着铺设间距的增大,肉眼观察到的横向湿润锋交汇深度也加深。毛管埋设深度为30 cm、间距为60、70、80 cm时,其湿润锋交汇的土层深度分别为0~10、10~20、15~20 cm;毛管埋设深度为35 cm、间距为60、70、80 cm时,其湿润锋交汇的深度土层分别为0~10、30~35、30~35 cm;毛管埋设深度为40 cm、间距为60、70、80 cm时,其湿润锋交汇的土层深度分别为10~20、20~30、25~30 cm。
[Key word]
[Abstract]
This paper discussed the different capillary depth and space between of the buried drip irrigation what the soil moisture is migration regular. The result shows that when the capillary in the same buried depth, with the increase of laying spacing, the macroscopic observation to the lateral also deepen the depth of wetting front intersection. Such as the capillary embedding depth is 30 cm, spacing is 60, 70, 80 cm, the depth of wetting front intersection soil respectively 0~10, 10~20, 15~20 cm; The capillary embedding depth is 35 cm、 the spacing is 60, 70, 80 cm, the depth of wetting front intersection soil respectively 0~10, 30 to 35, 30~35 cm; The capillary embedding depth is 40 cm, the spacing is 60,70,80 cm, the depth of wetting front intersection soil respectively 10~20,20~30,25~30 cm.
[中图分类号]
S277
[基金项目]
甘肃省青年基金项目“麦秸-塑膜复合覆盖对土壤水热及环境的影响机制”(145RJYA281)部分内容。