为了解决上海冬季蔬菜供应比较紧张的问题,上海县新泾公社程桥大队的广大贫下中农和干部,针对冬季气温低、蔬菜生长缓慢的特点,去年年初,先后用薄膜复盖冬常菜、菠菜、草头、韭菜、葱等三十多亩,效果较好。实践证明,这是提高冬季蔬菜产量的一项有效措施。据典型调查,这个大队在去年一月十二日,对四分地冬常菜,用薄膜复盖一星期,十八日上市产量1385斤,折合亩产3462斤,比不复盖的增产40％。一月上旬对三分地荠菜用薄膜复盖10天,一次收获420斤,折合亩产1400斤,比不复盖的增产一倍以上。用薄膜复 In order to solve the problem of tight supply of winter vegetables in Shanghai, the vast majority of poor and middle-level peasants and cadres in Chengqiao Brigade in Xinjing Commune of Shanghai Municipality targeted low-temperature winter vegetables and slow-growing vegetables. At the beginning of last year, , Grass head, leeks, onions and other 30 mu, the effect is better. Practice has proved that this is an effective measure to increase winter vegetable production. According to a typical survey, on this January 12 last year, this brigade covered four-season winter vegetables with a film for one week. The production volume on the 18th was 1,385 jin, equivalent to 3,462 jin of mu per mu, 40 hectares more than the non-covered yield of 40 %. In early January, three-thirds of shepherd’s purse was covered with a film for 10 days, yielding 420 kg at a time, equivalent to 1,400 kg per mu, more than doubling the yield without covering. Use film complex