1 扬长避短、矮架栽培西瓜四川西瓜生产属全国落后省份之一。近年来虽有较大的发展,栽培面积也仅有11万亩,平均亩产不到1000kg。长期供不应求,市场供应的西瓜80％左右靠外省调入。四川西瓜生产落后的主要原因是自然条件恶劣。以川西平原的广汉为例,平均年日照百分率为28％,仅为同纬度苏州年日照百 1 Avoid weaknesses, low shelf cultivation watermelon Sichuan watermelon production is one of the country’s backward provinces. In spite of the great development in recent years, the cultivated area is only 110,000 mu and the average yield per mu is less than 1,000kg. Long-term demand, about 80% of the market supply of watermelon transferred by other provinces. The main reason for the backward production of watermelon in Sichuan is the poor natural conditions. Taking Guanghan in the western Sichuan Plain as an example, the average annual percentage of sunshine is 28%, only for the same latitude in Suzhou