纳米农药防治西瓜病虫害效果试验研究

Experimental Study on the Effects of Nano Pesticideson the Control of Watermelon Diseases and Pests

宁夏西瓜种植面积大,病虫害种类多、危害严重。为了增强西瓜白粉病、炭疽病、蚜虫等主要病虫害的防治效果,减少农药使用量,开展了纳米农药防治西瓜病虫害试验。结果表明,纳米农药处理对3种病虫害的防治效果均较好。施药后2 d和7 d对蚜虫的防效分别为93.71%和99.8%,施药后7 d和14 d对白粉病的防效分别为73.85%和70.25%,施药后7 d和14 d对炭疽病的防效分别为61.35%和68.92%,均显著高于常规处理,且比常规处理农药使用量减少42.18%,可大面积推广应用。

Watermelon cultivation in Ningxia is relatively large,among which exist many types of diseases and pests.In order to improve the control effect of watermelon powdery mildew,Anthrax,aphids and other major pests,and reduce the use of pesticides,nano pesticide control experiments and demonstrations were carried out.The results showed that the nano pesticide treatment had good control effects on the three pests and diseases.The control effect on aphids was 93.71%and 99.8%after 2 and 7 days of treatment,respectively;The control effect on powdery mildew was 73.85%and 70.25%7 and 14 days after treatment,respectively;The control effect on Anthrax was 61.35%and 68.92%7 days and 14 days after treatment,respectively,which were significantly higher than that of conventional treatment,and the use of pesticides was 42.18%less than that of conventional treatment,which could be widely popularized.