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天水市向日葵霜霉病发病规律研究OcurenceofPlasmoparaHalstediofSunflowerinTianshuiCity任光地马平虎王廷杰(甘肃省天水市农科所天水741001)甘肃省天水市1988年发现向日葵霜霉病Plasmopar...
Tianshui sunflower downy mildew incidence study OcurenceofPlasmoparaHalstediofSunflowerinTianshuiCity Ren Guangdi Ma Pinghu Wang Tingjie (Gansu Tianshui Agricultural Institute Tianshui 741001) found in 1988 in Tianshui City, Gansu sunflower downy mildew Plasmopar ...