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新乡市南张门,原以大葱产量高、品质优而驰名于省内外.近年来由于病害,产量下降,品质变劣,一般减产20-30%,严重者达50%以上,甚至绝收.1976年我所在中央植保所的帮助下,经两年的调查研究,发现其大葱减产的主要原因是病毒病所致.据日本中田觉吾即氏记载,大葱病毒病最早(1922年)发生在日本北海道、关东、九洲等地,日本称为大葱萎缩病.传毒媒介是昆虫.为澄清大葱病毒病的寄主范围.传毒媒介种类以及发生流行规律,我们作了如下工作:
Xinxiang City, south Zhangmen, the original high yield of green onions, excellent quality and well-known in the province inside and outside. In recent years due to disease, production decline, poor quality, the general reduction of 20-30%, severe cases of more than 50%, or even absolute .1976 With the help of the Central Institute of Plant Protection (CPPN) of my own, after two years of investigation and study, it was found that the main cause of the reduction in the production of green onions was due to the virus disease. According to Japan’s Noda Tianjiushi, records of the first Chinese onion diseases (1922) occurred in Japan Hokkaido, Kanto, Jiuzhou and other places, Japan known as the onion shrinkage disease.Visit media is insects.In order to clarify the host of the disease of Onion virus disease.Viral media types and the occurrence of epidemic law, we made the following work: