夏季高温高湿有利于多种瓜类病虫害发生,加上春种蔬菜收获后田间遗留大量病虫源,使防治工作更加困难。因此,夏季种植瓜类蔬菜应注意采取以下措施: 一、注意选用前茬非瓜类的农田,避免瓜类连作。整地要搞好排水系统,防止大雨过后田间积水,起畦要比春种略高,要选择较耐热的品种。育苗要使用不带病的苗床土,可使用稻 High temperature and humidity in summer are conducive to a variety of melons pests and diseases, coupled with a large number of pests and insect pests left in the field after harvest of spring vegetables, so that prevention and control work more difficult. Therefore, the summer planting melons vegetables should pay attention to take the following measures: First, pay attention to the selection of non-melon crops before the cropland, to avoid continuous cropping. Soil preparation to improve the drainage system to prevent field water after heavy rains, starting from slightly higher than spring, to choose a more heat-resistant varieties. Nursery seedlings to be used without disease bed soil, the use of rice