陇东地区苹果斑点落叶病发病规律及药效试验研究

Control of Apple Alternaria Bloth in Longdong

苹果班点落叶病在陇东苹果产区发病近年有上升趋势，是危害苹果叶和果实的主要病害之一．本文对陇东地区苹果斑点落叶病的发生规律和药效防治进行了初步研究，在供试的7种杀菌剂中以10％世高可分散粒剂2500倍处理防效最显著，连续三次喷药后防效为94．57％，可作为该产区防治苹果斑点落叶病的首选药物．

Apple Alternaria Bloth is one of the most important diseases that disserves leaves and fruits. Its occurrence tends to rise in recent years in Longdong, a main apple producer in Gansu Province. This article reported the occurrence cycle and control of the disease in the region. After experiments with seven bactericides, the most effective medicament turned to be 10% ShiGao dispersible granules with effectiveness up to 94.57% after three continuous spraying. So it can be the principal medicament in this area in the prevention and treatment of Apple Alternaria Bloth.