近年来,苹果、梨、桃的疙瘩病普遍发生,特别是沙滩、海滩、盐碱地果园发病较重,干旱地区和干旱年份发病更重。试验证明果实疙瘩病的发生是由于土壤中缺少果树生长发育所必须的硼素和茶翅蝽等害虫为害引起的。 1、疙瘩病的症状疙瘩症的症状因发病的早晚和品种的不同而异,大致有干斑和果肉木栓化两种类型。干斑型出现较早,果树落花15天后,症状已明显。幼果果面出现近圆形水清状病斑,以后逐渐扩大,最后干缩凹陷,形成干斑,病 In recent years, the apple, pear, peach pimples are common, especially in sandy beaches, beaches and saline-alkali orchards, with heavier incidence and heavier incidence in arid areas and arid years. Experiments show that the occurrence of fruit pimples is due to the lack of soil necessary for the growth and development of fruit trees such as Boron and Tea Insects caused by insect pests. 1, the symptoms of pimples Symptoms of pimples due to the incidence of the sooner or later and the different varieties, there are roughly two types of dry spots and pulp cork type. Dry speckle appeared earlier, 15 days after falling fruit trees, the symptoms have been obvious. Fruit fruit surface appears nearly circular water clear lesions, after gradually expanding, and finally shrink dry depression, the formation of dry spots, disease