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油莱病毒病是油菜上的重要病害,对产量影响较大。据报导,为害油莱的病毒有多种。我省广大油莱产区分布最广的病毒为黄瓜花叶病毒和芜菁花叶病毒两种,其余病毒类型占比重甚少。而这两种病毒猖獗为害,在自然界主要靠蚜虫来传播。为了防治这类病害的传播蔓延,在生产上常采用杀虫剂来治蚜防病,但往往又收不到予期的效果。如何提高治虫防病效果,国内外都作过一些研究,近年来日本、加拿大等在探讨防治蚜传病毒病方面,应用忌避剂和抑制剂等措施均收到了良好的效果。本试验目的,根据有翅蚜虫的色觉反映不同,而设计了避蚜带放置田间和大田直接喷油乳剂,以观察治虫防病作用及其增产效果。现将试验结果整理如下:
Oil rape virus disease is an important disease on rapeseed, a greater impact on the yield. It is reported that there are many kinds of viruses that harm Leslie. The majority of the most widely distributed strains of oil-producing areas in our province are cucumber mosaic virus and turnip mosaic virus, with the remaining virus types accounting for a very small proportion. The two viruses rampant harm, mainly in nature by aphids to spread. In order to prevent the spread of such diseases spread, insecticides are often used in production to control aphids and prevent disease, but often can not receive the expected results. How to improve the control effect of pest control has made some researches both at home and abroad. In recent years, Japan, Canada and so on have received good results in the aspects of prevention and control of aphid-borne viral diseases, application of repellents and inhibitors. The purpose of this experiment, according to the color vision of a winged aphids reflect different, and designed to avoid the aphid zone field and field direct injection of emulsion to observe the role of pest control and its yield. The test results are summarized as follows: