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庆阳市位于甘肃省东部,年平均气温7~10℃,无霜期143~165天,年日照时数2 250~2 600小时,年均降水量480~660 mm,属典型的雨养旱作农业区。近年来,随着全膜双垄沟播玉米技术在全市的大面积推广,地膜使用量连年增加,对农业生态环境造成了一定影响。为了提高地膜使用效率,减轻环境污染,2007年本市镇原县率先开展地膜西瓜(玉米)免
Qingyang City is located in the eastern part of Gansu Province, the annual average temperature of 7 ~ 10 ℃, frost-free period of 143 to 165 days, the annual sunshine hours of 2 250 ~ 2 600 hours, the average annual rainfall of 480 ~ 660 mm, is a typical rain and dry farming agriculture Area. In recent years, with the full film double ridge furrow sowing corn technology in the city’s large-scale promotion, the use of plastic film increased year by year, the agricultural environment caused some impact. In order to improve the film use efficiency, reduce environmental pollution, in 2007 the town of Zhenyuan County, the first to carry out the film watermelon (corn) exempt