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莲藕是一种高产高效的水生经济作物,随着各地产业结构调整,其栽培面积有不断扩大之势。近几年来,莲藕的病害发生日趋严重,已成为发展莲藕生产的一大障碍,现将常见病虫害的综合防治技术介绍如下:莲藕腐败病:又名黑根病、藕瘟。是莲藕生产上的第一大病害,一般在耕作层浅和水浅的老藕田及连作田易发病,影响结藕而减产。主要为害地下茎、地上部叶片和叶面。病茎抽生的叶片,色泽淡绿,从叶缘开始发生褐色干枯,叶柄最后枯死。病菌多从伤口、吸收根或生长点侵入,病菌随流水灌溉传播。
Lotus root is a high yield and efficient aquatic economic crops, with the adjustment of industrial structure around the area of its cultivation has been expanding. In recent years, the growing incidence of lotus root disease has become a major obstacle to the development of lotus root production, now the common pest control techniques are as follows: Lotus root rot disease: also known as black root disease, lotus root blast. Is the first major disease on the production of lotus root, usually shallow shallow and shallow tillage farmland fields and even cropland prone, affecting the lotus root and cut. Main damage to underground stems, aboveground leaves and foliage. Stem stem pumping leaves, light green color, starting from the leaf margin brownish dry, petiole and finally dead. More pathogens from the wound, root absorption or growth point of invasion, germs spread with irrigation water.