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为了探求稻纵卷叶螟的发生预测,本站自1959—1973年在曲江马坝进行田间成虫、幼虫、天敌寄生率及水稻被害叶率的系统调查,1963年曾根据稻田中成虫发生数量,结合气候,天敌因素进行综合分析,提出了预测大发生的成虫指标,经实践验证取得预期效果。1973年秋,本站迁至韶关芙蓉公社西联大队继续进行研究,并对稻纵卷叶螟成虫在不同季节中的栖息场所及其数量消长作了调查,近年来我们根据旱地作物、杂草中的成虫数量进行预测水稻前中期的幼虫发生趋势,亦取得预期效果。
In order to explore the prediction of the occurrence of rice leaf roller, this site from 1959-1973 in the Qujiang Maba adult parasites and larvae, parasites and the rate of victimization of rice leaf system investigation in 1963, according to the number of adults in paddy fields , Combined with the factors of climate and natural enemies to make a comprehensive analysis and put forward the prediction of the occurrence of adult indicators, and achieved the expected results by practice. In the autumn of 1973, this site was relocated to the West Brigade of Furong Commune in Shaoguan to carry on the research. The investigation was made on the habitat and its population decline of the rice leaf roller in different seasons. In recent years, The number of adults to predict the trend of larvae in the middle and early rice, also achieved the desired effect.