Every year from July to August is the frequent flood-prone period in Jinnan fruit area. Disaster-prone areas must be equipped with flood prevention guns, and special personnel should be sent in close contact with meteorological departments. Once a dangerous situation arises, they will quickly attack and disperse the clouds. In the event of a locust plague, chills should be eliminated as soon as possible and the tree should be restored. The commonly used measure in production is to spray the tree body with a cooling effect modifier and a quick-acting nitrogen fertilizer in time, and remove some of the severely injured fruit, as appropriate, to sell the remaining fruits, so as to save nutrition and allow the good fruits to fully inflate and grow. Practice has proved that the apple trees that suffer from locust infestation will receive 4000-5000 times more fluid, 0.5% urea solution or 800 times more fluid, and then spray once every 7-10 days, which can effectively relieve chilling injury and increase swelling. And other effects. Double anti-fog double films face shield Double anti-fog double films face shield Dongguan Marvec Electronic Technology Co.,Ltd , http://www.marvec-cn.com