敦煌县属我国内陆特早熟棉区,是我省的主要产棉县。年平均降水量仅32.9毫米,年蒸发量高达2511.4毫米,但有党河水灌溉;全年平均无霜期150天,年平均温度9.4℃,日平均温度稳定通过10℃的积温为3631.3℃,年日照时数3291.8小时。根据这一特定的自然环境条件,近年来进行了各项栽培技术研究和推广,使全县棉花产量有了较大提高,1977年平均亩产皮棉88斤,1981年增至107斤。为了探索进一步提高棉花单产的途径,我们进行了大面积丰产栽培试验和示范。1980年试验示范213.7亩,平均亩产皮棉161.8斤;1981年试验示范201.84 Dunhuang County belongs to China’s special inland cotton precincts, is the province’s main cotton-producing counties. The annual average precipitation is only 32.9 millimeters, the annual evaporation is as high as 2511.4 millimeters, but with the party river irrigation; annual average frost-free period of 150 days, the annual average temperature of 9.4 ℃, the daily average temperature stable through 10 ℃ accumulated temperature of 3631.3 ℃, Number 3291.8 hours. According to this specific natural environment conditions, various cultivation techniques have been researched and popularized in recent years, which has greatly increased cotton output in the entire county. In 1977, the average output of lint was 88 kg per mu, up to 107 kg in 1981. In order to explore ways to further improve cotton yields, we conducted large-scale high yield cultivation experiments and demonstrations. Experimental demonstration of 213.7 acres in 1980, an average of 161.8 pounds of lint per mu; 1981 pilot demonstration 201.84