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根部病害有普遍发生,有单独发生,不易发现,很难彻底清除且危害大。为及时发现并有效的除治根部病害,现将果树的几种常见根部病害的症状及防治介绍如下: 一、根部病害的症状 (一)细菌性根部病害 1.根癌病 此病危害根颈部,也可危害到主干。在受害部位发生肿瘤。在草本植物上(葡萄)肿瘤最初是肉质的,后期木质化较硬。在木本寄主最初就是木质的。瘤的形状通常为球形或扁球形,也可互相愈合成不定形的。初生时乳白色或略带红色,光滑,柔软。后逐渐变褐乃至深褐色,木质化而坚硬,表面粗
Root diseases are common, occur alone, not easy to find, it is difficult to completely remove and endangered. In order to timely find and effective in addition to cure root diseases, now the symptoms of several common diseases and prevention and treatment of root diseases are as follows: First, the symptoms of root disease (A) bacterial root disease 1 root disease The root of the disease hazards Department, but also endanger the backbone. Tumor in the affected area. On the herbs (grapes) tumors were initially fleshy, late-hardened wood. In the woody host was originally woody. The tumor shape is usually spherical or oblate, can also be healing each other into an amorphous shape. Newborn milky or slightly red, smooth, soft. Gradually brown or even dark brown, lignified and hard, rough surface