一、示范目的及意义建平县降雨稀少,全县平均450毫米,北部乡镇仅420毫米,有时甚至不足400毫米,因此发展旱作节水是建平县农业生产的保障,然而由于传统的单一的旱作节水技术(地膜覆盖等)在大旱之年效果并不是很好,抗旱能力较弱,也有相应的减产。采用大区对比示范,在墒情较好的时节,实施玉米秸秆还田覆盖抗旱节水技术,打破犁底层,提高土壤蓄水保墒能 First, the purpose and significance of demonstration Jianping rare rains, the county average of 450 mm, the northern towns only 420 mm, and sometimes even less than 400 mm, so the development of dry farming water-saving agricultural production in Jianping County, however, due to the traditional single Of the water-saving technology for dry farming (mulching, etc.) in the drought years the effect is not very good, drought-resistant capacity is weak, but also the corresponding cut. The use of large-scale comparison and demonstration, in a better moisture season, the implementation of corn stalks to cover the drought-resistant water-saving technologies to break the plow bottom and improve soil water storage capacity