摘要
作者于1986年—1987年在武昌观察了不同温度条件下异色瓢虫的发育速率、用最小二乘法公式推导出了全世代及各虫态的发育起点温度和有效积温,并观察了温度对异色瓢虫成活率及生殖率的影响。结果表明:异色瓢虫全世代发育起点温度8.21℃,有效积温为353.46日度。卵的发育速率与温度呈逻辑斯蒂曲线关系1/Y=0.5291/1+e^(9.67-0.4235x);幼虫期和蛹期的发育速率与温度呈抛物线型关系,1/Y=-0.00047X^2+0.02917X-0.3323,1/Y=-0.00105X^2+0.0672X-0.8187。对各虫期存活最有利的温度为21℃,对生殖最有利的温度为29℃。
The developmental characters,such as the rates of development,survival andreproduction,etc.of Leis axyridis under different temperatures were observed in laboratory inWuhan.The developmental threshold and effective thermal constant of the whole generation are8.21℃,and 353.46D°.The relationship between temperature and develpmental rate of egg canbe expressed as a Logistic curve:and those between temperature and developmental rate of larve and pupa can be expressed asparabolic curves:respectively.The optimum temperature for survial and productivity are 21℃ and 29℃,respectively.
出处
《植物保护学报》
CAS
CSCD
北大核心
1989年第1期21-25,共5页
Journal of Plant Protection
关键词
异色瓢虫
有效积温
瓢虫
Leis axyridis
effective thermal constant
