摘要
本文在白背飞虱实验种群及自然种群生命表数据的基础上,应用状态空间分析法,研究水稻品种抗虫性对白背飞虱种群的控制作用.实验种群的研究表明,白背飞虱在不同品种上的产卵过程均有差异,且其产卵量高于田间实际卵量,这是由于天敌引起白背飞虱成虫非正常死亡与其逐日产卵概率的联合作用.以田间品种为标准品种,把水稻品种抗虫性对白背飞虱存活率、发育历期、生殖力的影响转化成控制指数,进而预测不同品种上白背飞虱的种群动态,给予水稻品种抗虫性对白背飞虱种群的控制作用比较合理的评价.
In this paper, the state-space analysis method was used to study the effect of rice varietal resistance on the population system of the whitebacked planthopper, Sogatella furcifera (Horvath) (WBPH). The results in the experiment showed that the rice resistance to WBPH existed an adverse influence on nyraphal development, survival rate of the nymphs and on fecundity. Feeding on the various varieties, WBPH presented the different processes of oviposition. In rice field, the natural enemies made the adults died abnormally, and resulted in the decrease of the egg quantity of WBPH population dynamics could be forecasted by using the state-space analysis method. It was showed that rice resistance had an obvious suppression on the WBPH population, and that the effect of resistant rice varieties snduid be emphasised in Integrated Pest Management Programme.
出处
《华南农业大学学报》
CAS
CSCD
1993年第3期37-41,共5页
Journal of South China Agricultural University
关键词
白背飞虱
水稻
品种
抗虫性
控制
Sogatella furcifera
Rice varietal resistance
Population dynamics
Population control
State-space analysis method
