渭北塬区旱地小麦微型聚水增产效应研究

针对渭北旱塬干旱少雨，冬小麦生育期内水分供需矛盾突出的气候特点，提出了旱地微型聚水保墒技术，该技术集地膜覆盖与秸杆覆盖于一体，把覆盖时间提前到前茬收获后，能将小麦整个生产年度降水最大限度蓄积并保存于土壤之中，加之温度和土壤养分提高，促进了小麦个体发育，具有良好的增产、增收效果。

Yield increasing Mechanism of Micro Watergathering in Wheat in Dry Land of Weibei Plateau

In accordance with the climate condition that rainfall was very limited and there was a remarkable contradiction between requirement and supply during the growing period of winter wheat in Weibei Plateau,we pointed out micro watergathering technique.It took advantage of plastic covering and straw mulch tillage. It could conserve to a great extent for the precipitation in winter wheat growing year in soil.In addition, it could raise the soil temperature and creat better conditions of water and heat for the wheat, enhancing the individual development of wheat. Owing to better growth, it created the high yield and economic effect.