在河北省永年县刘汉沙地果园进行不同锌肥防治鸭梨小叶病看出,5月上中旬用0.3%尿素与0.2%硫酸锌混喷和0.3%尿素与300ppm环烷酸锌混喷,对鸭梨个叶病枝恢复效果均较对照Ⅰ(0.3%尿素)处理差异显著。从田间调查结果来看,环烷酸锌优于硫酸锌。〔用硫酸锌防治梨树小叶病时,应注意必须 In Yongnian County, Hebei Province, Liu Han sand orchard for different zinc fertilizer prevention and treatment of pear pear leaf disease seen in mid-May with 0.3% urea and 0.2% zinc sulfate mixed spray and 0.3% urea and 300ppm naphthenate mixed spray, The results showed that there were significant differences in the recovery of the diseased branches of Yali pear compared with that of the control Ⅰ (0.3% urea). From the field survey results, zinc naphthenate is better than zinc sulfate. 〔Prevention and treatment of zinc sulfate with pear leaflet disease, should pay attention to the need