无论什么磷肥，全都来自含钙的磷酸盐。生骨粉，磷灰粉，磷灰石含有大量的这种盐类。
Phosphatic fertilzers are all derived from calcium salts of phosphoric acid and these are found as raw bones apatite and phosphate rock.
温室砂培试验研究了活化磷矿粉对玉米生长和吸收磷肥的影响。
The effects of activated phosphorite powder on the phosphorus utilization of maize were studied by nutrient quartz_sand culture experiment in the green_house.
氯化腐磷，是含腐殖酸的煤粉和磷矿粉在液相反应中通氯气制取的一种新型磷肥。
CHP is a new phosphate fertilizer that is got at the liquid phase reaction on condition that the chlorine is entered into the coal which contain the humic acids and the powdered rock phosphate.
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