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焦条丽夜蛾Aconti graellsi F.是襄阳专区近五年来新发展的一种棉花中后期的食叶大害虫。为了摸清该虫的发生规律,1962年我们在襄北地区进行了田间调查和室内饲养观察,现将部分结果初步整理报导如下。 一、发生规律 1.发生与为害 据1962午观察,焦条丽夜蛾在襄北地区一年可发生四代。第一代幼虫盛期在5月下旬及6月下旬;第二代在7月上旬至8月上旬;第三代在8月上旬至9月上旬;第四代在8月下旬至9月中旬。第一、四两代主要为害商麻;第二、三两代主要为害棉花;尤以第三代数量最多,为害甚巨。 2.消长规律初步分析 (1)与气象因子的关系:从调查结果可以看出,焦条丽夜蛾卵量消长与温度、湿度和雨量有着一定关系,尤以雨量关系较为密切。由
Aconti graellsi F. is a newly developed insect pest in the late-mid-cotton stage of Xiangyang Prefecture in the recent five years. In order to find out the law of occurrence of the pest, we conducted field surveys and indoor rearing observations in Xiangbei area in 1962. The preliminary results of some of the findings are reported below. First, the occurrence of the law 1. Occurrence and Harm According to the observation of 1962, the annual production of Chinese caterpillar fungus moth in northern Hubei can occur four generations a year. The first generation of larvae peak in late May and late June; the second generation in early July to early August; the third generation in early August to early September; the fourth generation in late August to mid-September . The first, four or two generations of major damage Shangma; the second and third two generations mainly cotton damage, especially the third generation of the largest number, detrimental. 2. Preliminary analysis of the growth and decline of the law (1) the relationship with the meteorological factors: As can be seen from the survey results, the growth and decline of Eggplant larvae temperature and humidity, and rainfall have a certain relationship, especially in the relationship between rainfall is more closely. by