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甘薯天蛾的严重为害,是阜阳地区农业生产上的一个新矛盾。为了准确掌握虫情,达到巧、准、狠、省地消灭甘薯天蛾,保证甘薯丰收,专区曾派5个技术干部,从春初到秋末,轮守田间,日夜观察,了解发生规律,找出经济有效的防治方法。 经过调查研究证明:甘薯天蛾在阜阳地区一年可以发生四代,以8—9月份最为严重,繁殖率高,一头雌虫平均能产卵1,035粒,一头幼虫一生可吃“胜利百号”甘薯叶片35片左右。初步分析,降雨是影响发生消长的重要因素,6—9月雨水偏少,则有利发生。6月中旬,第一代幼虫发生在春甘薯地里,这时虫口密度稀,春薯面积小,防治收效大,成本低。因此,1965年阜阳地区根据自力更生的精神,采取土法上马,做到了“三治、一消灭”。
Sweet potato moth serious damage, agricultural production in Fuyang area is a new contradiction. In order to accurately grasp the worm, to clever, accurate, relentless, provincial elimination of sweet potato moth, to ensure the sweet potato harvest, the area had sent five technical cadres, from spring to late autumn, round the field, observe the day and night to understand the law, find A cost-effective method of prevention and control. After investigation and study shows that: sweet potato moth in Fuyang area can occur four generations a year, the most severe in August-September, the high rate of reproduction, a female can lay an average of 1,035 eggs, a larvae eat “Victory 100” About 35 leaves of sweet potato. Preliminary analysis, rainfall is an important factor affecting the growth and decline, less rainfall from June to September, then the favorable place. In mid-June, the first generation of larvae occurred in the sweet potato spring, when insect population density is thin, spring potato area is small, prevention and treatment of large-effect, low cost. Therefore, in 1965, according to the spirit of self-reliance, the Fuyang area took the lead in using the indigenous methods and achieved “three governance and one elimination.”