消病健苗粉拌种对玉米纹枯病的防治效果

Control Effect on Maize Sheath Blight by Seed Dressing with a New Compounded Fungicide

试验比较了粉锈宁、五氯硝基苯、井冈霉素和自行研制的消病健苗粉４种药剂拌种对玉米纹枯病的防治效果。结果表明：４种药剂拌种都能提高玉米出苗率，促使幼苗生长，延缓和减轻纹枯病的发生。用种子重量０．４％的消病健苗粉拌种，播后８０ｄ，防效８１．８％，１００ｄ防效仍有４８．５％，玉米增产达７５０ｋｇ／ｈｍ２，效果最好。

Four fungicides, such as validamycin, triadimefon, quintozene, and a new compound, were used to control maize sheath blight by seed dressing. They could increase the rate of germination, promote seedling growth, delay and lowerase the incidence of maize sheath blight. Among them, the new compounded fungicide had the best control effect on maize sheath blight, which was up to 81.8% (80 days after seeding), 48.5% (100 days after seeding), and increased yield by 750 kg/hm 2