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磷是植物营养三要素之一,合理施用磷肥是提高农作物产量和改善产品品质的一项重要措施。而合理施用磷肥,则必须做到土壤、作物、磷肥品种和施肥方法对口,才能充分发挥磷肥的增产作用。由于不同土壤的供磷水平差别很大,就是属于同一类型土壤的不同田块的供磷水平也有很大的差异。因此,施用磷肥要做到土壤对口,就需要有一种适应不同土壤类型并能逐块测定土壤供磷水平的方法。过去测定土壤供磷水平一般沿用常规化学测定法。这种方法需要一定的仪器设备和药品,而且测定方
Phosphorus is one of the three elements of plant nutrition. Proper application of phosphate fertilizer is an important measure to increase crop yield and improve product quality. The rational use of phosphate fertilizer, you must do soil, crop, phosphate fertilizer and fertilization method counterparts in order to give full play to the role of phosphate fertilizer. Due to the different levels of phosphorus in different soils, there is also a great difference in the level of phosphorus supplied by different plots belonging to the same type of soil. Therefore, the application of phosphate fertilizer to achieve soil counterparts, there is a need to adapt to different soil types and can be measured on a one-by-block soil phosphorus supply method. In the past to determine the level of soil phosphorus generally follow the conventional chemical assay. This method requires a certain amount of equipment and medicines, and determination of side