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本项研究通过对广东省粤中(肇庆),粤东(汕头)和粤北(曲江)三个不同类型地区,70年代末期以来稻飞虱(包括褐稻虱和白背飞虱)的发生情况的研究,分析了广东省稻飞虱种群数量变动的一般规律和关键因子;研究了广州地区褐稻虱不同世代的虫态历期和繁殖力、寄生和捕食天敌对卵的影响等;制定了不同类型稻区稻飞虱预测预报办法;建立了预测模型(另文发表)。本项工作于1989—1991年进行。这些研究在学术上有新的进展,对提高广东省稻飞虱测报技术水平及其生产
In this study, the effects of planthoppers (including brown planthopper and white-backed planthopper) on Guangdong’s Central Guangdong (Zhaoqing), eastern Guangdong (Shantou) and northern Guangdong (Qujiang) The general rules and key factors of planthopper population dynamics in Guangdong Province were analyzed. The insect status and fecundity of different generations of brown planthopper, and the effects of parasitic and predatory natural enemies on the eggs in Guangzhou were studied. Developed different types of rice planthopper forecasting and forecasting methods; established a prediction model (published separately). This work was carried out in 1989-1991. These studies have made new academic progress, to improve the technical level of rice planthopper in Guangdong Province and its production