稻纵卷叶螟发生期:2代6月下旬～7月上旬,3代7月下旬～8月上旬,4代8月下旬～9月上旬。防治适期:各代的低龄幼虫高峰期。防治指标:每亩3000个新虫苞。药剂:每亩用40%毒死蜱100毫升,或25%虫除净90毫升/亩加好乐士60克/亩。使用方法:田间灌水3～5厘米,每亩对水30公斤在傍晚均匀喷雾 Rice leaf roller Occurrence period: the second generation of late June ~ early July, the third generation of late July ~ early August, fourth generation in late August ~ early September. Prevention and control period: the younger generation of larvae of all generations. Control indicators: 3,000 new insects per acre. Pharmacy: 40% per acre with chlorpyrifos 100 ml, or 25% of the worm net 90 ml / mu plus good Le 60 grams / mu. Usage: field irrigation 3 ~ 5 cm, 30 kg of water per mu evenly spray in the evening