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试验采用盆钵培养方法，在等养分条件下研究三种不同水溶磷含量（ＷＳＰＣ）硝酸磷肥、重过磷酸钙在两种缺磷土壤和一种中度缺磷土壤上对冬小麦、水稻的不同反应。试验表明，硝酸磷肥中ＷＳＰＣ不同，在不同土壤或同一土壤不同作物上的施用效果亦不同，尤其与供试土壤中速效磷含量密切相关。在极缺磷土壤上应施用高ＷＳＰＣ的硝酸磷肥；同一土壤旱作时应选用高ＷＳＰＣ的硝酸磷肥，而水作时ＷＳＰＣ可适当低些。中度缺磷土壤，低ＷＳＰＣ的硝酸磷肥已可满足冬小麦生长发育的需求。
In this experiment, the pot culture method was used to study the effects of three different water-soluble phosphorous content (WSPC) nitrophosphate phosphates on the condition of equal nutrients, and the effects of double superphosphate on winter wheat and paddy in two kinds of phosphorus- reaction. The results showed that different application of WSPC in different nitrate fertilizers on different crops or in the same soil was different, especially closely related to available P in the soils tested. In extremely deficient P soil, high WSPC nitrophosphate should be applied; in the same soil, WSPC with high WSPC should be selected for dry cultivation, while WSPC should be lower for water. Medium phosphorus deficiency soils and low WSPC nitrate fertilizers have been able to meet the needs of winter wheat growth and development.