| 东北春小麦根腐病防治研究 |
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| 引用本文： | 白金铠,陈其本.东北春小麦根腐病防治研究[J].植物保护学报,1982,9(4):251-256. |
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| 作者姓名： | 白金铠 陈其本 |
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| 作者单位： | 吉林省农科院植保所，吉林省农科院植保所 加拿大多伦多市Phytotoxicolosy Section Air Resources Branch 现名Gabriclla Tung |
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| 摘 要： | 东北春小麦根腐病Bipolaris sorokiniana(Sacc.ex Sorokin)shoem.是推广抗锈良种后出现的问题。苗期引起根腐,成株期发生叶斑、穗腐和黑胚粒。病菌有两种类型定名为H_1和H_2型,田间前者占优势。病种子和病株残体是田间发病的初侵染源,种子消毒和轮作可减轻苗期根腐并提高种子出苗率。根腐病菌寄主范围很广,来自29种禾本科杂草和作物上的菌株均能侵染小麦。温室和田间试验结果,小麦灌浆乳熟期发病对产量影响最大,也是形成黑胚粒时期。目前尚无免疫品种,农家种和半冬性品种比国外品种和硬粒小麦抗病,Triticum timopheevii表现高抗。采取种植抗病品种结合种子消毒、轮作、增施氮肥等综合防治技术是防治小麦根腐病的有效措施。
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STUDIES ON CONTROL OF ROOT ROT CAUSED BY BIPOLARIS SOROKINIANA (SACC. EX SOROKIN) SHOEM. OF SPRING WHEAT IN NORTH-EASTERN CHINA |
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| Pai Chinkal and Chen Qiben.STUDIES ON CONTROL OF ROOT ROT CAUSED BY BIPOLARIS SOROKINIANA (SACC. EX SOROKIN) SHOEM. OF SPRING WHEAT IN NORTH-EASTERN CHINA[J].Acta Phytophylacica Sinica,1982,9(4):251-256. |
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| Authors: | Pai Chinkal and Chen Qiben |
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| Institution: | Institute of Plant Protection, Jilin Academy of Agricultural Sciences and Institute of Plant Protection, Jilin Academy of Agricultural Sciences |
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| Abstract: | Since the extensive growing of the certain stem rust resistant varieties of wheat in northeastern provinces,the root rot disease caused by Bipolaris sorokiniana became a new problem in wheat production.The disease occurs from the seedling stage to adult plants,and it is usually highly epidemic in the later stage. B.sorokiniana has two biologic forms to be designated as H1 and H2 respectively in the medium and H1 is usually to be dominated.The primary source of infection seems to be come from the seedborne fungi and soil infestation.The fungus has a wide host range.Isolates obtained from the 29 species of grasses and cereals could infect wheat from the results of the crossed inoculation test under green house conditions. High damages usually occur in the later stage of host growth.It is especially true to be easily infected in the milky stage.The degree of intensity by infection is promoted by favorable environmental factors. Although there are some varietal differences of resistance,none immune varieties would be expected as indicated by the results of artificial inoculation under field conditions during 1955-1957.In comparatives peaking,the farmer''s varieties and some semi-winter wheats seemed to have a high degree of resistance,moreover,Triticum timopheevii also is highly resistant to root rot. Finally the authors suggested that the combination of seed-treatment,rotation and use of the resistant varieties may minimize the diseaseto a certain extent. |
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