磷是作物生长发育所必需的三大营养要素之一。大量资料表明,在土壤有效磷含量偏低的情况下,导致氮、磷、钾比例失调,不能满足农作物正常生长发育的需要,造成作物减产。一般低产田普遍缺磷,而土壤磷素含量减少也是地力下降的一种象征。据都匀县的土壤普查结果,我们认为应当及时采取两方面的措施,即增施磷肥和调整部分土壤酸度。 Phosphorus is one of the three major nutrients required for crop growth and development. Numerous data show that in the case of low available phosphorus in soil, resulting in the imbalance of nitrogen, phosphorus and potassium, can not meet the needs of normal crop growth and development, resulting in crop production. Generally low-yield fields generally lack phosphorus, while reducing the amount of phosphorus in the soil is also a symbol of decline in soil fertility. According to the soil survey results in Duyun County, we think that we should take two measures in time to increase phosphate fertilizer and adjust part of the soil acidity.