湘西地区川东獐牙菜上茄粗额蚜的发生与温度的关系  

The relationship between the occurrence of Aulacorthum solani Kaltenbach on Swertia dividii Franch and temperature in western Hunan

作　　者：蒋拥东[1] 李鹄鸣[1] 谭济才[2] 

机构地区：[1]吉首大学生物资源与环境科学学院,吉首416000 [2]湖南农业大学生物安全科技学院,长沙410128

出　　处：《植物保护学报》2008年第4期356-360,共5页Journal of Plant Protection

基　　金：国家星火计划资助项目(AE770005)

摘　　要：茄粗额蚜Aulacorthum solani Kaltenbach是湘西地区川东獐牙菜上的重要害虫，为揭示温度对其生长发育的影响，在室内研究了温度对其各虫期发育进度、存活及生殖的影响，并运用数学模型进行拟舍。结果表明，茄粗额蚜1～4龄若虫发育起点温度比较整齐，平均为9．49±0．99℃，有效积温为91．98±2．46日·度，相关系数r=0．9850。完成整个世代发育的最适温度为22．25℃，发育的最低、最高温度分别是2．35℃和30．08℃。温度在接近最适发育温度时，无翅型比例最大，有翅型很少。茄粗额蚜在湘西地区发生的理论代数为27～29代。To clarify the effects of temperatures on development of Aulacorthum solani Kaltenbach on Swertia dividii Franch in western Hunan, the development progress of A. solani was dealt with in this paper using a mathematical model. The results showed that developmental threshold temperature of nymph of instars 1 to 4 was 9.49 ±0.99 ℃, and effective accumulated temperature was 91.98 ±2.46 day-degree （ r = 0. 9850）. Optimum temperature, lowest lethal temperature and highest lethal temperature were 22.25 ℃, 2.35 ℃ and 30.08 ℃. The ratio of wingless aphids was higher than winged aphids, when the temperature closed to optimum temperature. The theoretical generation was 27 -29 probably in western Hunan.

关 键 词：茄粗额蚜 川东獐牙菜 温度 湘西 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]