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白翅叶蝉是福建省水稻的重要害虫,苗期受害严重者,整片稻苗苍白,甚至枯死;早稻孕穗、抽穗期常大量发生为害,影响谷粒饱满度,造成减产。福州和闽侯地区一年发生4代,部分5代。成虫越冬。冬季日平均温度达11℃以上时仍能取食为害。春季成虫侵入稻田,4月下旬前后大量产卵,5月中旬虫数激增,5月下旬或6月初达到高峰。早稻收割时由于农事活动引致若虫大量死亡。晚稻田于8、9月虫数较多,但危害不如早稻严重。10月中旬以后成虫逐渐离开稻田,迁往越冬场所。 寄主植物幼嫩茂密和较大湿度的小生境有利于白翅叶蝉的发育繁殖。大发生的气候因子主要是春季多雨。适宜的温湿度范围为温度20—25℃,相对湿度85—90％。 DDT单独使用或DDT与666混用防治白翅叶蝉都能收到满意的效果。早稻秧田宜在播种后两周施药防治;本田于5月中旬虫口密度开始增长之际施药,亦能抑制为害。冬季小麦出土以前清除田边杂草,也是一项有效的防治措施。
White-winged leafhopper is an important pest of paddy rice in Fujian Province. When the seedling is severely damaged, the whole piece of rice seedling is pale or even dead. Early booting and heading stage often occur in large quantities, which will affect the plumpness of grain and reduce the yield. Fuzhou and Minhou areas occur four generations a year, some 5 generations. Adults overwinter. When the average daily temperature in winter is above 11 ℃, it can still eat. Adult adults invaded the rice fields in spring and laid large numbers of eggs before and after the end of April. The number of insects increased sharply in mid-May and reached a peak in late May or early June. During the early rice harvest, nymphs died due to agricultural activities. The late rice fields in August and September the number of insects more, but the damage is not as serious as early rice. Adults gradually leave the paddy fields after mid-October and move to the overwintering places. The host plants of young and densely populated and relatively humid niches are beneficial to the development and reproduction of white-winged leafhoppers. The main climatic factor is the rainy spring. Appropriate temperature and humidity range of temperature 20-25 ℃, relative humidity 85-90%. DDT alone or DDT and 666 mixed with white leafhopper control can receive satisfactory results. Early rice seedling should be applied two weeks after sowing control; Honda in mid-May the beginning of population density began to increase pesticide application, but also inhibit the damage. It is also an effective control measure to clear the weeds in the fields before the winter wheat is excavated.