湖南稻曲病的防治用药及防治适期研究

[目的]筛选防治稻曲病的最佳药剂以及防治适期。[方法]以杂交水稻组合88S／0293为供试材料，在水稻破口前5d和破口抽穗初期各施药一次。通过田闻药效试验研究味同药剂对稻曲病的防治效果。[结果]30％爱苗乳油225ml／hm^2、43％好力克悬浮剂270ml／hm^2和25％富力库微乳剂450ml／hm^2防治效果最好，其次为20．67％万兴乳油300ml／hm^2和2．5％纹曲宁乳油3750ml／hm^2，15％粉锈宁可湿性粉剂对稻曲病防治效果差。30％爱苗乳油、43％好力克悬浮剂、25％富力库微乳剂对水稻有明显的增产作用。爱苗对稻曲病的防治适期为水稻破口前5d施一次药为佳。[结论]该研究为稻曲病的有效防治奠定了基础。

Study on the Control Fungicides and Optimum Control Period of Rice False Smut in Hunan Province

[Objective] The aim was to screen the optimum fungicides and period for controlling rice false smut.[Method] With hybrid rice combinations 88S/0293 as tested material,the fungicides were applied once in each first 5 d before crevasse stage and early heading stage,and the control effects of different fungicides on rice false smut were studied by field efficacy test.[Result] The control effects of 30% Armure EC at 225 ml/hm2,43% Haolike SC at 270 ml/hm2 and 25% Fuliku emulsion at 450 ml/hm2 were best,followed...