我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙。

We make superphosphate by reacting rock phosphate with sulphuric acid.

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。

According to soil fertility and soil structure in the loess plateau, the experiment of fertilizer amount was carried out with ammonium nitrate and calcium superphosphate.

对钙镁磷肥、过磷酸钙和部分酸化磷肥在河南郑州西岗沙土和河南西华县潮土中的退化情况进行了研究。

The phosphate degradation was studied when Fused Magnesium phosphate, Single-super phosphate and Partially Acidulated phosphate Rock were applied in two kinds of soils.

本文系统地报道了氯化胺、过磷酸钙、苹果枝木灰和饼肥四种肥料对国光和青香蕉苹果树的根际营养效果。

This paper systematically reports the effect of root nutrition in apple trees. After apply the four fertilizers, the best effect is the apple branch ash.