磷是植物生长必不可少的大量元素之一,在北方的碱性、微碱性土壤上施用迟效性磷矿粉丁支速效性过磷酸钙,如何发挥其肥效是值得重视的一个问题,在使用方法上,经过几年来试验结果表明:1.将磷旷粉与有机肥(厩肥,猪粪,马粪等)混合堆沤发酵1个月以上(如气温低可以适当延长堆沤时期)作基肥使用,效果较好。在堆沤发酵过程中,使有机物分解产生有机酸、碳 Phosphorus is one of the large quantities of essential elements for plant growth. It is worth paying attention to how to exert its effect on the alkaline and slightly alkaline soil in northern China. In the use of methods, after several years of test results show that: 1. The phosphate powder and organic manure (manure, pig manure, horse manure, etc.) were mixed fermented more than 1 month (such as low temperature can be properly extended reactor period) Used as a base, the effect is better. In the fermentation process, the organic matter is decomposed to produce organic acids and carbon