四、锌肥的施用技术目前,我国使用的锌肥主要有硫酸锌、氯化锌和氧化锌等,其含锌量分别为35%、48%和78%.硫酸锌作种肥,一般每亩用2～3斤.试验证明,锌在土壤中移动性较差,横向移动约1厘米,竖向移动约4厘米.因此,锌肥应施在种子下面或旁边,而表施效果差.为了施肥方便,可与生理酸性肥料或细潮土混匀后施用,但不能与磷 Fourth, the application of zinc fertilizer technology At present, China’s zinc fertilizer mainly zinc sulfate, zinc chloride and zinc oxide, the zinc content of 35%, 48% and 78% respectively. Zinc sulfate as seed fertilizer, generally Mu with 2 to 3 pounds.Experiment proved that zinc in the soil mobility is poor, horizontal movement of about 1 cm, vertical movement of about 4 cm.Therefore, the zinc fertilizer should be applied under or beside the seeds, while the table is ineffective .In order to Convenient fertilization can be mixed with physiological acid fertilizers or thin Chao soil after the application, but not with phosphorus