旱地起垄覆膜微集水种植玉米技术研究

Study on Micro-rainwater Catchment and Planting Technique of Ridge Film Mulching and Furrow Seeding of Corn in Dryland

为了提高旱作农业区降水资源利用率,改善旱地玉米的生长环境,达到提高单位面积产量的目的,设计出一套旱地起垄覆膜微集水种植玉米技术。通过不同降雨年型的试验研究表明：在玉米生长期,起垄覆膜微集水种植技术（A）和传统平铺膜（CK1）、不铺膜种植技术（CK2）相比较,应用该技术的0~60 cm平均土层含水量最高,达12.63%（2004年）、11.87%（2009年）;同时该技术也提高了土温,改善了玉米生长发育进程,明显提高了单位面积产量和水分利用效率（WUE）（P〈5%）。和平铺膜相比,起垄覆膜微集水种植技术的水分利用率提高了25.7%（2004年）、8.9%（2009年）,和常规无膜种植相比,该技术的水分利用率提高了81.2%（2004年）、31.7%（2009年）。

To improve the rain use efficiency,exchange the environment of the corn growth and achieve the goal of inreasing the yield of corn,a set of technologies of ridge film mulching and furrow seeding of dryland corn was designed in arid regions of China.The result in different years＇experments indicated that： The average water storage in 0~60 cm soil layer treated by the ridge film mulching and furrow seeding technique was superior to that treated by common film mulching（CK1） and non-mulching（CK2）,Its water storage was 12.63%（2004）,11.87%（2009）.The technique could increase the soil temperature,promote the growth and development of all maize organs,significantly raise the grain yields and the average water use efficiency（P0.05）.The average water use efficiency of the ridge film mulching and furrow seeding technique was 25.7%（2004） and 8.9%（2009） higher than those of non-mulching technique,and was 81.2%（2004） and 31.7%（2009） higher than those of common mulching technique.