夏季高温给蔬菜生长发育带来许多危害,比如造成植株失水、徒长、抗病性丧失等,诱发多种病虫害。高温、冰雹、热雷雨等灾害性天气,也是造成蔬菜秋淡的基本原因。因此,在蔬菜生产上做好高温防御工作,对夏季蔬菜栽培显得特别重要。一、选择耐热抗病品种。各地可根据本地的情况,选择适合本地栽培的抗高温、抗病能力较强的蔬菜品种。二、在高秆作物间套作。充分利用高秆作物的遮阴作用,搞好喜阳与喜阴作物间的 High temperature in summer brings many hazards to the growth and development of vegetables, such as water loss, leggy growth, loss of disease resistance, etc., which induce a variety of pests and diseases. High temperature, hail, thunderstorms and other disastrous weather, but also the basic reason for the fall vegetables. Therefore, doing a good job in high temperature defensive work on vegetable production is particularly important for summer vegetable cultivation. First, choose heat-resistant varieties. According to the local conditions, select suitable local varieties of high temperature resistant and disease resistant vegetables. Second, intercropping between tall stalks. Make full use of the shading effect of tall stalks and improve the relationship between Xiyang and Xinyin crops