稻纵卷叶螟属迁飞性害虫,具有突发性,经常大范围危害甚至局部成灾,是霍山县水稻的“三虫二病”的最主要害虫之一,平均每年的发生危害面积占水稻所有病虫发生危害面积的24%左右。经过测报工作者几十年的调查研究,基本掌握了其发生规律,为科学防治打下了良好基础。发生期内雨日多,虫害就可能重;初次迁入的峰次多,蛾量大,当年重发生的可能性大;耕作制度混栽区重于纯耕作区;披软阔叶型的水稻品种重于硬质窄叶型品种;施氮过多,叶色浓绿,利于稻纵卷叶螟的发生。据此,提高了预测预报的准确性。 Rice leafroller is a flying pest, with a sudden, often large-scale damage or even local disaster, is the Huoshan County rice “three bug ” one of the major pests, the average annual occurrence of harm The area accounts for about 24% of all the pests and diseases that occur in rice. After decades of surveying and mapping workers in the investigation, the basic grasp of the law of its occurrence, laid a good foundation for scientific prevention and control. During the rainy days during the period, pests could be heavy; the number of first-time inoculation was much, the amount of moths was heavy, and the possibility of re-occurrence in those days was high; the mixed planting area was heavier in tillage system than the pure tillage area; Varieties heavier than rigid narrow-leafed varieties; too much nitrogen, leaf color dark green, conducive to the occurrence of rice leaf roller. Accordingly, the accuracy of forecasting is improved.