谷子是丘陵沟壑区的主要作物,榆林地区种植面积达190万亩左右,约占全区粮田播种面积的四分之一。但在当地平均亩产只有100—40斤。为提高其单产,1983年,我所在子洲县西庄乡进行了陕北黄土丘陵沟壑区山旱地谷子亩产400斤栽培技术研究。试验情况西庄乡位于黄土丘陵沟壑区子洲县北部,地处北纬37°43′—47′,东径109°39′—42′,海拔1030米左右,年平均温度9℃。日照2750小时。降水量450毫米,7—9月的降水量占全年65％左右,多暴雨。无霜期130—160天,冬春严寒多风,夏季燥热少雨,秋季 Millet is the main crop in the hilly and gully areas. The planted area in Yulin is about 1.9 million mu, accounting for about one quarter of the sown area of ​​grain crops in the region. However, the average yield per mu in the area is only 100-40 kg. In order to increase its yield, in 1983, Zixiang Township, Zizhou County, where I was located, conducted a study on the 400-mu per mu cultivation techniques of mountain dry-land mounds in the loess hilly and gully regions of northern Shaanxi. Test situation Xizhuang Township is located in the north of Zi Zhou County, a hilly and gully region in the Loess Plateau, located at 37 ° 43’-47 ’north latitude and 109 ° 39’-42’ east longitude with an elevation of 1030 meters and an annual average temperature of 9 ° C. 2750 hours of sunshine. Precipitation of 450 mm, July-September precipitation accounted for about 65% of the year, more rain. Frost-free period 130-160 days, winter and spring cold and windy, hot and humid in summer, autumn