宁夏灌区４、５月份晴天多，光照充足，但此时大气温度低，且忽冷忽热，不利于瓜菜生长。近年来，根据群众实践，农技人员总结出了搭建小型塑料弓棚（棚长３０～４０ｍ，宽５ｍ，高１ｍ）的办法，使光照充足、气温低的矛盾得到有效协调，采用此项技术栽培的甜瓜、茄子或大... Ningxia irrigation area in April and May more sunny, adequate light, but this time the temperature is low, and the hot and cold, is not conducive to the growth of vegetables. In recent years, according to the practice of the masses, the agricultural technicians summed up the way to build a small plastic bow shed (shed length 30 ~ 40m, width 5m, height 1m) so that the contradiction between adequate light and low temperature can be effectively coordinated. Cultivated melon, eggplant or large ...