苹果炭疽病和轮纹病病菌田间散发规律及两病药剂防治试验研究

A Study on Spores Spreading Regular and Control of the Apple Ring Spot and Apple Anthacnos

１９８８～１９８９年，选择新乡市郊区重病园，应用空中捕捉孢子、花后果实套袋、病枝淋洗及多菌灵、百菌清等五种农药四种搭配方法对苹果炭疽病Ｇｌｏｍｅｒｌｌａｃｉｎｇｕｌａ（Ｓｔｏｎ．Ｓｃｈ．ｅｔＳｐａｕｌｄ）和轮纹病ＰｈｙｓａｐｏｒａｐｉｒｉｃｏｌａＮｏｓｅ进行防治。结果表明：①苹果自花后至收获期均可受到两病孢子的侵染；②病菌孢子的散发量与降雨量有着十分密切的关系；③日均温２０℃是两病孢子散发的临界温度；④多菌灵、百菌清等五种农药交替施用的防效最好，相对防治效果为９８％。

During 1988￣ 1989,two Serious damaged apple gardens were selected and studied on the spore spreading regular and control of the Physalospora piricola Nose and Glomerella cingula (Ston. )Sch. et. The sult showed that: ① fruits could be infected by spores in the period from flowers droped to harvesting; ②Spread amount of spores is closely related to rainfall ;③when the day-mean temperature is 20℃,Spores could be spreaded in raining days ;④Rela tive cure result of alternate spraying pesticides is best.