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中国农业科学院果树研究所陈策、王金友等同志研究,在春季苹果树发芽前喷洒福美砷100倍液,重喷直径3厘米以上的大枝;于6月下旬(陕西秦岭北麓)至7月上旬(辽宁产区),在病情较重的果园,再用
Chinese Academy of Agricultural Sciences Institute of fruit trees Chen Ce, Wang Jinyou and other comrades in the spring before the apple tree spraying Fumei arsenic 100 times the liquid spray over 3 cm in diameter larger branches; in late June (Shaanxi Qinling northern foot) to early July (Liaoning producing areas), in the heavier orchard, reuse