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日光温室种植蔬菜近几年经济效益可观,所以在太康县日光温室黄瓜的种植已大面积推广应用。但是由于对黄瓜病虫害的防治不够及时,造成黄瓜产量较低,减少经济效益。日光温室黄瓜主要有四大病害发生:早期发生灰霉病、黑星病、霜霉病,后期发生枯萎病。所以对病虫害的认识和防治非常重要。一、黄瓜病害的表现1.灰霉病灰霉病一般以开败的雌花浸染,导致花瓣腐烂并长出淡灰色的霉层,逐渐向幼瓜扩展,致瓜头出现水渍状,表面密生灰色霉层。比较大
In recent years, solar greenhouse planting vegetables considerable economic benefits, so Taikang solar greenhouse cucumber cultivation has been widely applied. However, cucumber pests and diseases due to inadequate prevention and control in time, resulting in lower cucumber production and reduce economic benefits. There are four major diseases in greenhouse cucumber disease: early occurrence of gray mold, scab, downy mildew, the late blight. Therefore, the understanding of pests and diseases and prevention and control is very important. First, the performance of cucumber disease 1. Botrytis Botrytis Botrytis cinerea gray mold disease is usually the defeat of the female flower infiltration, leading to petal rot and grow light gray mold layer, and gradually extended to the young cucumber, watermelon caused the head of the water-like appearance, Gray mold layer. bigger