每年春耕播种时,有些农户常常把锌肥和磷肥混合在一起施用,其实这样做是很不科学的。须知,锌与磷酸接触后易生成一种磷酸锌,这种磷酸锌不易被水溶解,这样就使速效锌变成了一种难溶性的锌,农作物的根系对这种锌很难吸收利用,起不到施用硫酸锌的作用,结果白白浪费了硫酸锌。因此,在施用硫酸锌时,一定要避免与过磷酸钙、重过磷酸钙、磷酸二铵和磷酸二氢钾等磷肥接触,更不能混合在一起施用。具体施用硫酸 When spring planting is carried out every year, some farmers often use zinc fertilizer and phosphate fertilizer to mix and apply. In fact, it is unscientific to do so. Notes, zinc and phosphoric acid contact easily generate a zinc phosphate, this zinc phosphate is not easy to be dissolved in water, so that the quick-acting zinc into a insoluble zinc, the root crops of this zinc is difficult to absorb the use of zinc, Can not achieve the effect of applying zinc sulfate, resulting in the waste of zinc sulfate. Therefore, in the application of zinc sulfate, we must avoid with superphosphate, triple superphosphate, diammonium phosphate and potassium phosphate and other phosphate fertilizer contact, but can not be mixed together. Specific application of sulfuric acid