According to soil fertility and soil structure in the loess plateau, the experiment of fertilizer amount was carried out with ammoniumnitrate and calcium superphosphate.
根据黄土丘陵区土壤肥力特点及土体结构，选用硝酸铵和过磷酸钙作为试验肥料，进行了不同施肥量试验。
2
The product change from to ammoniumnitrate to NPK complex fertilizer in the respects of raw materials, technical routes and production were given in this article.
对硝铵改产npk复肥的原料路线、技术路线及生产方法进行分析探讨。
3
Calcium ammoniumnitrate is a new high-analysis compound fertilizer with excellent properties.