我县位于山西省东南部,属于半湿润易旱农区,年平均降雨556毫米.春季干燥多风,冬季雨雪稀少,雨量多集中于夏秋两季。农田灌溉面积甚少,81％以上为早地。为了解决旱地农业增产问题,我们从1987年开始对秸秆覆盖增产技术开展了试验研究。 My county is located in southeastern Shanxi Province, is a semi-humid and drought-prone agricultural areas, with an average annual rainfall of 556 mm. Spring dry and windy, rare winter rain and snow, rain and more concentrated in summer and autumn. Cropland irrigation area is very small, more than 81% for the early. In order to solve the problem of agricultural production increase in dry land, we conducted a pilot study on straw mulching and stimulation techniques since 1987.