近几年随着农村种植结构的调整,我市西瓜栽培面积扩大较快,1987年约在5万余亩,并有进一步扩大的趋势。但由于目前西瓜品种的单一,尚未采用早熟品种及其双膜泉盖栽培纪套技术,致使杭州地区6月底前上市的早西瓜一直来为外地占有。本地区西瓜供应集中在7月中下旬,往往易遭受台风的危害,西瓜产量不稳定,由于品 In recent years, with the adjustment of planting structure in rural areas, the city’s watermelon cultivation area expanded rapidly in 1987, about 50,000 acres and has further expanded the trend. However, due to the current single species of watermelon, precocious varieties and their double membrane spring cover cultivation techniques have not yet been adopted, resulting in the late introduction of watermelon in Hangzhou before the end of June has been for the field to occupy. Watermelon supply in the region concentrated in late July, often vulnerable to the dangers of typhoons, watermelon production is unstable, because the product