【摘要】 研究了喷施亚磷酸钾对富士苹果黑星病的预防效果。试验结果发现喷施亚磷酸钾3～4次对苹果黑星病发生有一定的预防控制效果，与对照组相比，亚磷酸钾对预防黑星病的发生起到了良好的作用，能降低中后期苹果黑星病发生程度25%～35%左右。亚磷酸钾可推荐作为黑星病预防药剂的补充肥料，建议与内吸性杀菌剂配合或交替使用。更多还原

【Abstract】 This study examined the effectiveness of spraying potassium phosphitein in controlling scab in ‘Fuji’ apple tree.Results showed that spraying potassium phosphite 3 ～ 4 times was effective in preventing and controlling apple scab. Compared with the control, potassium phosphite significantly reduced the occurrence of apple scab by 25% ～ 35%.Therefore, potassium phosphite is recommended as a supplementary fertilizer for the prevention of scab and can be used in combination with or as an alternatively to systemic fungicide.更多还原