浙江省三门县沈园西瓜专业合作社利用西瓜大棚旧薄膜和竹架,种植大棚蚕豆100亩(1亩=667平方米,下同),亩产值超3000元,为合作社带来20多万元经济效益。蚕豆是三门县主要冬季作物,常年种植面积在2.2万亩左右。由于该县蚕豆主要以鲜豆荚供应市场,其上市时间早迟则是决定蚕豆市场价 The watermelon professional cooperatives in Shenyuan, Sanmen County, Zhejiang Province used the old film and bamboo frame of watermelon greenhouses to grow 100 mu of broad bean (1 mu = 667 m2, the same below), with an output value of over 3000 yuan per mu and more than 200,000 yuan for cooperatives Economic benefits. Broad bean is the main winter crop in Sanmen County, with a perennial planting area of ​​22,000 mu. As the county mainly to fresh beans pod beans supply market, the market time is late to determine the market price of broad beans