河西灌区甜菜丛根病的发生及其区域分布  

Rhizomonia and Its Regional Distribution in Hexi Irrigation District

作　　者：李敏权[1] 林淑洁[1] 王致和 王复和 刘斌基 

机构地区：[1]甘肃农业大学植保系,甘肃省甜菜糖业研究所

出　　处：《甘肃农业大学学报》1994年第2期210-212,共3页Journal of Gansu Agricultural University

摘　　要：对河西灌区９县（市）进行了甜莱丛根病的普查和室内研究，调查研究表明，其中有６县（市）的甜菜种植区该病普遍发生。发病率最低１０．６％，最高４８．２％。田间表现症状类型，黄脉型占６７．４％，焦枯型占２５．３％，黄脉型占０．３％，混合型占７％。病害发生程度与轮作年限呈明显的负相关。茬口，种植模式，灌水，施肥对病害的发生也有一定的影响。The Rhizomonia is one of the most distructive beet diseases in Hexi in Hexi irrigation district,Gansu. Since 1988,the disease has been found in 6 connties(caties) in the region. According to the data investigated, there were three kinds of symptoms in the field.e. g, the mildly yellow' leaves (674 %), the flably and wilt leaves without discolortion (25. 3 % ), the veinal yellow.leaves with necroticlesions (0. 3 %),and mixture symptoms(7 %)

关 键 词：甜菜 丛根病 区域分布 病害 

分 类 号：S435.663[农业科学—农业昆虫与害虫防治]