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1983年11月中下旬我们赴日考察一都——东京都,三县——静冈,爱媛、长崎的柑桔。现将日本柑桔病虫害及其防治的情况,结合我们的感想,介绍如下: 日本不是柑桔原产国,目前主栽品种均自国外引进,由于过去未严格检疫,世界各柑桔主产国的主要病虫害均已侵入。据1981年宫川等报导日本柑桔侵染性病害共有49种,其中真菌性与细菌性病害24种,病毒病害9种,果实贮藏期病害16种。有害的生物据1980年版《日本经济植物主要害虫及有害动物》记载共有203种,但主要的种类仅35种。在柑桔生产上经常造成危害需要防治的有:柑桔红蜘蛛,矢尖蚧、锈壁虱、柑桔星
In late November, 1983, we went to Japan to study all the citrus fruits in Tokyo, three prefectures - Shizuoka, Ehime, and Nagasaki. Now citrus pests and diseases in Japan and its prevention and control, combined with our thoughts, introduced as follows: Japan is not a citrus country of origin, the current cultivated species are imported from abroad, the past is not strictly quarantine, the world’s major producing countries of citrus The main pests and diseases have been invaded. According to a report by Miyagawa in 1981, there were 49 citrus infestation diseases in Japan, including 24 fungal and bacterial diseases, 9 viral diseases and 16 diseases during fruit storage. Toxic organisms According to the 1980 edition of Japan’s major pests and pests of economic plants, a total of 203 species are listed, but only 35 are the major species. In the production of citrus are often caused by the hazards need to prevent and control are: citrus red spider, Agrimony scale rust rust tick, citrus star