枝条涂抹硫酸锌巧治果树小叶病５月份，苹果或梨树谢花后，如观察到具有小叶的病株或小叶簇生的枝条，可用３％－４％的硫酸锌溶液涂抹病枝上的２－３年生枝段。经过涂抹后的病枝，１０天后即可恢复正常生长，有效期可达１－２年。此法如果与土施硫酸锌相结合，可以从根本... Slices coated with zinc sulfate Qiao fruit tree leaflet disease In May, apple or pear tree after the flower, such as the observed leaflets diseased plants or lobular clusters of branches, available 3% -4% zinc sulfate solution smear 2 - 3 year old branches. After smear the diseased branches, 10 days to resume normal growth, the validity of up to 1-2 years. This method if combined with soil zinc sulfate can be from the fundamental ...