撑×绿杂交竹梢枯病调查及空间分布型研究

本文通过标准地设置调查了杂交竹梢枯病发生情况及病害分布情况。在自然条件下，该病害多发生在新生杂交竹上，病害在林间可表现出3种症状，枯枝型，梢枯型，株枯型，并以株枯型为主。该病害在寄主上的特征性病状为在竹梢的某一节或某一枝条的节权处出现褐色病斑，向上延伸成舌形或向上下同时扩展成菱形，颜色逐渐加深呈紫黑色。严重发病竹林，竹冠赤色，远看似火烧，发病率和感病指数分别达100％和95．2。感病植株的空间分布型显示，10块标准地的C〉1，I〉0、M^＊／M〉1、Ca〉0和K〉0，因此，杂交竹梢枯病病株在田间属于聚集分布。

Research on Survey and Space Distribution of Bambusa pervariabilis × Dendrocalamopsis daii Blight

The occurrence situation and the disease distribution of hybrid bamboo blight were surveyed under the natural condition by standard plot setting.This disease usually occurred on the newborn hybrid bamboo,and might display 3 symptoms in the forest,including branch blight,tip blight and stem blight.This disease's characteristic symptom on the host is that brown sickness spots in some of the bamboo tips or some branch node-forks appear,upwardly extend the tongue shape or simultaneously upward and down expand t...