摘要
白背飞虱若虫和全世代发育速率与温度的关系呈逻辑斯谛关系,成虫产卵前期和卵的发育速率与温度的关系呈二次抛物线关系。在18—30℃下,卵孵化率比较稳定,水稻生育期对卵孵化亦无明显影响,孵化率平均为86.96％。若虫存活率、成虫产卵量和内禀增长力受温度和食料条件的影响十分明显,取食分蘖期和拔节期水稻的若虫存活率最高,成虫产卵量和内禀增长力最大。在水稻各生育期,若虫存活率、成虫产卵量和内禀增长力与温度的关系呈抛物线趋势。当温度达到35℃时,各生育期卵孵化率均下降到50％以下,且若虫陆续全部死亡。
The relationship between temperature and developmental rate of white-backed planthopper Sogatella furcifera (Horvath) complied with a logistic curve in its nymphal stage and whole generation, and with a parabola curve in its preoviposition period and egg stage. Under 18-30℃,the hatching rate of egg,on the average 86. 96%,was rather stable,the developmental stage of rice had also no effect on hatching. While there was significant effect of temperature and nutrition condition on the survival of nymph,fecundity of adult,and intrinsic rate of increase,their highest values occurred as the nymph fed on rice in tillering and jointing stages; and they are all parabolically increased with temperature in all developmental stages of rice. As the temperature raised up to 35 ℃,its hatching rate fell down to <50% and all the nymphs successionally died out.
出处
《植物保护学报》
CAS
CSCD
北大核心
1994年第3期209-213,共5页
Journal of Plant Protection
关键词
白背飞虱
温度
种群增长
食料
水稻
white-backed planthopper temperature nutrition condition population increase
