摘要
通过研究,明确了蚕豆出苗至开花期,适宜的温度条件(13—14℃)、干旱少雨(比常年偏少48%)是苜蓿蚜发生及种群数量上升的主要因素之一.并指出苜蓿蚜是否大发生,食料是前提,虫源是基础,气象是关键.
This paper indicated the climatic conditions of appropriate temperature (13 to 14℃)and air drought (48% rainfall less than the average year) were the main facfors which determine heavy occurrence and increasing population density of black bean aphid, and als opointed whether or not black bean aphids break out, food was prerequisite,aphid density was basic and climate was crucial.
出处
《青海大学学报（自然科学版）》
1997年第1期55-58,共4页
Journal of Qinghai University(Natural Science)
基金
青海省教育委员会资助项目
关键词
苜蓿蚜
蚕豆
影响因素
种群数量
Black bean aphid Broadbean ( Vicia faba L. ) Main factors Population density
