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我国土壤缺磷面积约占70%。由于磷肥不足已引起氮磷比例失调,致使氮肥肥效下降,所以磷肥在我国化肥中具有重要作用。解决我国磷肥不足问题,一是开源,二是节流。开源是要尽快地开发可以利用的磷矿资源。节流是合理分配和施用好现有磷肥。我国西南地区的硫磷铝锶矿于1958年发现,储量很大。比人们公认世界上储量最大的圣诞节岛和脑鲁岛的磷酸铝类矿床还高。目前无论以矿石量还是以五氧化二磷量计,我国的磷酸铝类磷矿床都是
China’s phosphorus area of about 70% of the soil. Due to lack of phosphate fertilizer has led to the imbalance of nitrogen and phosphorus, resulting in reduced efficiency of nitrogen fertilizer, phosphate fertilizer in our country has an important role in chemical fertilizers. To solve the problem of insufficient phosphate fertilizer in our country, one is open source, and the other is to reduce expenditure. Open source is to develop as soon as possible the available phosphate rock resources. Throttling is the rational distribution and application of existing phosphate fertilizer. Found in 1958 in China’s southwest region of the phosphorous strontium aluminate, a large reserves. Than people recognized the world’s largest Christmas Island and the island of Allura phosphate deposits. At present, regardless of the amount of ore or phosphorus pentoxide basis, China’s phosphate aluminum phosphate deposits are