冬春干旱,树体含水量降低,苹果腐烂病较重,带病菌的枯枝落叶干旱条件下亦不宜腐烂掉,形成越冬病菌侵染源,只要条件适合,就容易引起苹果褐斑病等病害的侵染和流行;同时,冬季干旱,亦有利于红蜘蛛、蚜虫等害虫的发生。果农朋友需要密切关注病虫害发生情况,提早进行预防。 Winter and spring droughts, trees reduce the water content, heavier apple rot disease, litter with bacteria litter under dry conditions should not rot, forming the source of overwintering germs, as long as the conditions are right, it is easy to cause diseases such as apple brown spot Of the infection and epidemic; the same time, the winter drought, but also conducive to red spider, aphids and other pests. Fruit farmers need to pay close attention to the occurrence of pests and diseases, early prevention.