论文部分内容阅读
塑料薄膜大棚生产蔬菜是一种新发展的栽培方式,目前还存在不少问题,有待研究解决。现将大棚生产中几种主要病虫的发生为害及其防治措施简介如下: 病虫种类一、蕃茄早疫病(轮纹病):真菌性病害,侵害蕃茄的茎、叶、果实,初为水渍状小点,发展为近圆形病斑,后期呈现由许多小黑点组成的同心轮纹。受害植株叶片枯黄,茎杆易折断,果实脱落。早疫病是目前大棚番茄上为害严重的病害。
Plastic film greenhouse production of vegetables is a new development of cultivation methods, there are still many problems to be solved. Now the production of greenhouse shedding several major pests and their prevention and control measures are as follows: pest species A, tomato early blight (ring disease): fungal diseases, infringe the tomato stems, leaves, fruits, the beginning of water Small stains, the development of nearly circular lesions, the latter part of the concentric pattern composed of many small black spots. Damaged plant leaves yellow, stem easily broken, fruit fall off. Early blight is currently the most damaging disease in tomato plants.