茶树芽枯病是新发现的茶叶新病害,被害茶芽叶稍生长受阻,叶片萎缩卷曲,直接降低了春茶产量与质量,对茶业生产造成了较大的经济损失。现将芽枯病发生特点及防治技术介绍如下,供各地防冶时参考。1.发生为害特点茶芽枯病主要为害营养物质丰富的春茶幼嫩芽,先在叶尖或叶缘产生黄色或黄褐色小病斑,后扩展成不规则形状,病斑边缘不明显。芽尖受害呈黑褐色枯焦状,萎缩不能伸展,病斑后期表面散生黑色小点,以叶片正面居多,染病叶片易破碎并扭曲,严重制约高档 Tea bud blight is a newly discovered new disease of tea. The damage caused by the growth of tea bud slightly hindered the growth of curly leaves and reduced the output and quality of spring tea directly, which caused great economic losses to the tea industry. Bacillus thuringiensis is now the occurrence of characteristics and prevention techniques introduced below, for the prevention and control of all local reference. 1. Occurrence of pest damage Bactrian blight is the main damage to nutrient-rich young tea buds, first in the tip or leaf margin to produce yellow or yellowish brown lesion, then expanded into an irregular shape, lesion edge is not obvious. Bud victim was brownish brown coke-shaped, shrinking can not stretch, the surface of the lesion at the end of black spots, to the front of the leaves are mostly infected leaf easily broken and distorted, seriously restricting the high-grade