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棉红铃虫 Pectinophora gosspiella(Saundcrs)是上海地区棉花作物的主要害虫,六十年代以后尽管每年均进行越冬防治,但是为害仍然很重。为此,笔者自1978年起,进行了红铃虫越冬代数量对第一代虫口数量影响的研究。六年的试验结果表明,越冬代虫口数量与一代虫害花数及一代成虫数量均无显著相关,故在红铃虫的防治策略中可取消对越冬代红铃虫的防治。
Cotton bollworm Pectinophora gosspiella (Saundcrs) is a major pest of the cotton crop in Shanghai. After the 1960s, despite overwintering prevention and control every year, the damage is still heavy. To this end, since 1978, the author conducted a study on the influence of overwintering generations of red bollworm on the population of the first generation. The results of six years showed that there was no significant correlation between the population of overwintering insects and the number of insect pests and the number of one generation of adult pests. Therefore, the prevention and treatment of overwintering rhubarb beetle can be eliminated in the control strategy of red bollworm.