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本研究就20多个水稻品种(系)对褐稻虱的取食、产卵、生存、生育和生态等方面抗性进行综合分析。结果表明,褐稻虱在抗虫品种(系)嘉23、丙620、浙丽1号和浙丽2号上的取食量显著小于感虫品种秀水48。在抗虫品种嘉23上的存活率为28.43%,在秀水48上高达100%。初孵至羽化的历期在秀水48上平均为13.6天,羽化期5天,而在嘉23上则分别为16.53天和9天。在秀水48上的产卵量显著高于在抗虫品种(系)浙丽2号、嘉23、丙620和嘉25—2。褐稻虱在抗虫品种丙620上的田间种群密度显著低于秀水48,若虫高峰期延迟1周,峰度平缓。其雌成虫在感虫品种(系)上的相对产卵量也显著高于抗虫品种。
In this study, more than 20 rice varieties (lines) of the brown planthopper feeding, oviposition, survival, reproductive and ecological aspects of a comprehensive analysis of resistance. The results showed that the feeding amount of brown planthopper on insect-resistant cultivars (lines) Jia 23, C 620, Zheli 1 and Zheli 2 were significantly less than that of the susceptible variety Xiushui 48. The survival rate of insect-resistant species Jia 23 was 28.43%, up to 100% in Xiushui 48. The period from initial hatching to emergence was 13.6 days on average in Xiushui 48, 5 days on emergence and 16.53 days and 9 days on Jia 23 respectively. The amount of spawning in Xiushui 48 was significantly higher than that in the resistant varieties (Zhelii 2, Jia 23, C 620 and Jia 25-2). The population density of brown planthopper in insect-resistant variety C 620 was significantly lower than that in Xiushui 48, and the nymphal lag was delayed by 1 week in peak period. The relative fecundity of female adults on the susceptible varieties (lines) was also significantly higher than that of insect-resistant varieties.