论文部分内容阅读
豆角在我国各地都有种植,春、夏、秋季均可栽培,是夏秋季主要的蔬菜品种之一。豆角受病虫害危害,会严重影响其产量及商品外观性状,因此对其病虫害的防治尤其重要。豆角的病害主要有锈病、疫病、枯萎病和叶霉病,虫害主要有豆蚜、豇豆螟、美洲斑潜蝇和螨类等,生产上除应加强农业防治措施外,还要采用药剂进行防治。一、主要病害1、锈病:该病主要在叶片上发生。病叶起初产生淡黄色小斑点,渐变褐,隆起呈小脓疱状,然
Beans are planted throughout our country, spring, summer and autumn can be cultivated, summer and autumn is one of the main varieties of vegetables. Beans by pests and diseases hazards, will seriously affect the output and appearance of goods, so its pest control is particularly important. The main diseases of beans were rust, blight, blight and leaf mold. The main pests were bean aphid, cowpea borer, leaf miner and mite, etc. In addition to the prevention and control of agricultural production should be strengthened in production, but also the use of agents for prevention and treatment . First, the main disease 1, rust: The disease occurs mainly in the leaves. Sick leaves at first produce small yellowish spots, brown gradient, swelling was a small pustular, however