临泽县新华镇甜叶菊田菟丝子危害调查初报  

A preliminary Report on Damage of Dodder on Stevia in Xinhua Town of Linze County

作　　者：陈叶[1,2] 陈述章 CHEN Ye;CHEN Shu-zhang(Hexi University, Zhangye; 734000, Gansu;Provincial Key Laboratory of Characteristic Resource Utilization of Hexi Corridor, Zhangye 734300, Gansu)

机构地区：[1]河西学院,甘肃张掖734000 [2]甘肃省高校河西走廊特色资源利用省级重点实验室,甘肃张掖734300

出　　处：《中国糖料》2018年第2期40-41,共2页Sugar Crops of China

摘　　要：对危害临泽县新华镇甜叶菊的菟丝子种类进行了鉴定,并通过走访和现场调查分析,初步调查了其危害及发生规律。结果表明:危害甜叶菊田的菟丝子为日本菟丝子。日本菟丝子的侵染率<10%,危害指数为12.4。发生菟丝子危害的农田,株高下降5~11cm,减产幅度为5.4%~14.6%。并有针对性地提出了合理建议。The species,damage and occurrence regularity of dodder parasitism in stevia were identified through visits and on-site investigation in Xinhua town of Linze county.The results showed that the species of dodder was Cuscuta japonica.Its infection rate was less than10%,and hazard index was12.4.In the stevia field damaged by dodder,the stevia plant height decreased from5cm to11cm,the yield decreased by5.4%-14.6%.And some reasonable suggestions were put forward.

关 键 词：甜叶菊 日本菟丝子 感染率 危害指数 

分 类 号：S435.661[农业科学—农业昆虫与害虫防治]