摘要
在黄土高原半干旱区,采用不同的种植方式,分析了旱地谷子水分供需特征及耗水规律,旨在通过改善土壤供水能力、土壤温度和降雨空间分配,提高灌水效率和水分利用效率,最终达到稳产高产的目的。通过2年的试验研究,结果表明:不论枯水年或丰水年,覆膜坐水+膜上灌水1次的处理增产效果最好,较对照增产130%左右,采用农田微集水技术的沟植垄盖处理具有提高作物水分利用效率的能力和较强的气候适应性,较对照增产67.5%～105%。
The rainwater is imbalance in time and space annual year, and serious misplacement between rainfall and the period of need water crop in semi-arid areas of the loess plateau. In order to fit this situation, different planting methods are adopted. This paper analyze water supply demand trait and water consumption regulation of millet, which is in order to improve soil moisture, soil temperature, ability of rainwater space allocation, water use efficiency,yield and so on. The field experiments passed two years, it is found that mulched film combine irrigation one time in the film can remarkably improve yield which is 130% higher than CK method in dry and wet years. The planting technique of micro-water harvesting includes ridge mulched with plastic film and small rain can easily run down planting area which is yield of millet increased by 67.5 %- 105% compared with CK, and this method can improving WUE and have very good ability of adapt climate.
出处
《灌溉排水学报》
CSCD
北大核心
2008年第2期106-109,共4页
Journal of Irrigation and Drainage
基金
国家“十五”节水农业重大科技专项资助项目(2002AA2Z4221)
关键词
集雨补灌区
谷子
种植技术
耗水规律
supplemental irrigation of harvested rainwater areas
millet
planting technique
regulation water consumption
