1981、82两年,根据本市的气候和栽培技术特点,郊区由点到面进行了西瓜地膜覆盖栽培示范试验。从81年设一个小区的观察点,82年扩大到7个点共27亩。均使用0.015mm透明地膜,进行增产效应的对比试验。另外,在崇明绿华公司试验点进行了不同色膜覆盖的对比试验,(利用碳酸氢氨塑 1981, 82 years, according to the city’s climate and cultivation techniques, the suburbs from point to surface watermelon mulching cultivation demonstration test. From 81 years to set up a plot of observation points, 82 years to expand to 7 points a total of 27 acres. Use 0.015mm transparent film, the contrast effect of increased yield test. In addition, in the Chongming Luhua test point for the different color film coverage of the contrast test, (use of ammonia hydrogen carbonate