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试验表明,稻散·丙溴磷水乳剂和稻丰散水乳剂对5(3)代稻纵卷叶螟低龄幼虫防治效果较好,且持效期较长。防治适期在稻纵卷叶螟低龄幼虫高峰期,667 m2用药量50%稻散·丙溴磷水乳剂和40%稻丰散水乳剂均为120 mL。
The results showed that the control of 5 (3) generations larvae of C. medinalis was better and the persistence period was longer. Control of the appropriate period in the rice young leaf-roll larvae peak, 667 m2 dose of 50% of rice powder · aprotinil water emulsion and 40% of the water-in-water emulsion were 120 mL.