山西潞安地区.全年降雨量500-600毫米,多集中在六、七、八月分,春季降水较少,故有十年九旱之说。早霜在9月20日前后,晚霜在4月20日左右。蒸发量比降雨量大2-3倍,属半干燥地区。土壤上层多为粉砂壤和粉砂粘壤土,下部多属粘壤或壤土。地下水位一般4—5公尺。当地耕作深度已由原来的10—12厘米增至20—22厘米。 Shanxi Luan area.Annual rainfall of 500-600 mm, mostly concentrated in June, July and August points, less precipitation in spring, so there are nine years of nine drought said. Early frost on September 20 before and after the night frost on April 20 or so. Evaporation than the rainfall 2-3 times, is a semi-dry area. The upper soil mostly silty clay and silty clay loam, the lower part of mostly clay or loam. Groundwater level is generally 4-5 meters. The local farming depth has been increased from 10-12 cm to 20-22 cm.