通过土壤化验表明,我县几种不同类型的土壤都缺磷.几年来,一些高产社队的经验证明,施用磷肥是一项重要增产措施.但是也有一些社队虽然大量施用了磷肥,却没有发挥增产作用,这与拖用方法不科学,降低了肥效,有很大关系. Soil tests have shown that several different types of soils in our county are deficient in phosphorus. Over the past few years, the experience of some high-yielding communes and communes has proven that the application of phosphate fertilizer is an important stimulation. However, some communes and communes, although using a large amount of phosphate fertilizer, did not Play a role in increasing production, which is not linked with the unscientific method to reduce fertilizer, a great relationship.