问:直播稻苗比较密,每亩用24%噻呋酰胺20克加5%己唑醇80克防治纹枯病,效果怎么样,能防住纹枯病吗?答:适期用药有良好防效。问:如果每亩用24%噻呋酰胺30克,不加己唑醇可以吗?哪一种效果好?答:可以,两种方案均有较好防效。问:早稻稻曲病发病如此重,请问是何原因?答:抽穗期雨水多、品种易感病、用药防治不到位等,均会造成病害发生重。水稻抽穗前7天左右,是稻曲病菌的初侵染高峰期,也是用药防治稻曲病的最佳时期。用药时间过早或过迟,防效下降。适期足量使用 Q: live rice seedlings more dense, with 24% of 24% thifluzamide per acre plus 5% hexaconazole 80 grams control sheath blight, the effect of how kind, can prevent sheath blight? A: medication is good Control effect. Q: If you use 24% thifluzamide 30 grams per acre, do not add hexaconazole? Which kind of effect is good? A: Yes, both programs have good control effect. Q: The incidence of early rice false smut is so heavy, what are the reasons? A: The heading date of rain and more susceptible varieties, drug control is not in place, etc., will cause serious disease. About 7 days before rice heading, it is the peak period of initial infection of Ustilaginoacum tumefaciens and the best time to prevent and control rice false smut. Medication time too early or too late, anti-efficacy decreased. Suitable for adequate use