烟稻轮作与烟草病害关系的研究

A STUDY ON THE RELATION BETWEEN TOBACCO DISEASES AND ROTATION OF PADDY AND TOBACCO

经４年研究表明；烟稻轮作能有效地控制烟草青枯病（ＰｓｅｕｄｏｍｏｎａｓｓｏｌａｎａｃｅａｒｕｍＥ．Ｆ．ｓｍ）的发生，并可减轻烟草赤星病Ａｌｔｅｒｎａｒｉａａｌｔｅｒｎａｔａ（Ｆｒｉｅｓ）ｋｅｉｓｓｌｅｒ和烟草野火病Ｐｓｅｕｄｏｍｏｎａｓｔａｂａｃｉ（ＷｏｌｆｅｔＦｏｓｔｅｒ）ｓｔｅｖｅｎｓ的危害。烟草花叶病（ＴＭＶ）、黄瓜花叶病（ＣＭＶ）、烟草蚀纹病（ＴＥＶ）与烟稻轮作的关系不明显。春烟晚稻隔季轮作中，烟草气候斑点病发生于团棵至旺长阶段，下部叶片受害重；烟赤星病主要发生在烟叶成熟期；烟草花叶病和烟蚀纹病的盛发期都在烟草的旺长阶段。始病期早的年份，两种病毒病发生危害重。

Through four years research,it is showed that the rotation of paddy and tobacco can effi-ciently control the Tobacco bacterial wilt [pseudomonas solanacearum E.F. SM.]and reduce the damage of tobacco brown leaf spot[Alternaria alternata(Fries)Keissler]and Tobacco wild fire[Pseudomonas tabaci(Wolf et Foster) Stevens],but the control effect is indistinct in tobacco mosaiC[Tobacco mosaic virus](TMV),Cucumber mosaic[Cucumber mosaic virus](CMV) and tobacco etch disease [Tobacco etch virus](TEV).In rotation of spring tobacco and late rice,the tobacco weather spot disease occured in the period of full clump through to that of the flourishing growth during that period,the leaves of the lower part were serious damaged,the tobacco brown leaf spot mainly occured in the mature stage of tobacco leaves.The flourishing stage of tobacco mosaic and tobacco etch dis-ease occured in the flourishing growth period of tobacco,the earlier the occurrence of these two diseases, the more serious the damage.