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随着棚室豇豆种植面积的不断扩大,豇豆生产中的病害也日趋严重,影响了棚室豇豆的产量和品质,也影响了菜农的经济利益。本文就棚室豇豆常见的几种病害的症状及防治方法介绍如下:一、豇豆煤霉病煤霉病又称叶霉病、叶斑病,各地均有发生,以春季大棚受害较重。症状:主要危害叶片,严重时也危害茎蔓、叶柄、及豆荚,发病初期呈黄绿色斑,继而黄绿斑中出现由少到多、叶两面生的紫红色和紫褐色的小点,之后扩大为病斑,湿度大时病斑表面密生煤
With the continuous increase of planting area of cowpea in the greenhouse, the diseases in the cowpea production are also aggravating day by day, affecting the yield and quality of cowpea in the greenhouse and also affecting the economic interests of the vegetable growers. This article on the greenhouse cowpeas common symptoms of several diseases and prevention methods are described below: First, the cowpea coal mold disease Coal mold disease, also known as leaf mold, leaf spot disease, have occurred throughout the area, to the spring greenhouse damage heavier. Symptoms: The main hazards of leaves, also seriously endangering the stem vine, petiole, and pods, the early onset of yellowish green spots, and yellowish green spots appear from less to more, the leaves on both sides of the birth of purple and purple brown spots, then Expand to lesion, when the humidity is high on the lesion surface of dense coal