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奉贤县从1983年起,进行小环棚栽培西瓜的试验,获得良好效果。1987年全县推广面积达10360亩,占全县西瓜面积的17.6%。平均亩产3187.5公斤。平均亩产值900元,比露地西瓜每亩增产500元,全年推广万亩小环棚双膜覆盖西瓜增加收入500万元左右。小环棚双膜覆盖栽培的作用:1.增加棚温、地温小环棚西瓜,棚内温度
Since 1983, Fengxian County has carried out the experiment of cultivating watermelon in small canopy shelter and achieved good results. In 1987 the county promotion area of 10360 acres, accounting for 17.6% of the county watermelon area. Average yield 3187.5 kilograms. The average output value of 900 yuan per mu, 500 acres more than open watermelon per mu, the annual promotion of 10,000 acres of small shed double membrane cover watermelon to increase revenue of 5 million yuan. Small ring shed double-film coverage of the role of cultivation: 1. To increase shed temperature, ground temperature shed small shed watermelons, greenhouse temperature