田间试验和测试结果表明，磷酸二铵、普钙和沉淀磷肥分别比对照增产21.8%、17.9%和11.3%。
Di-calcium phosphate , calcium superphosphate , and precipitate phosphoric fertilizer increased wheat yields by 12.8 , 17.9 , and 11.3 % respectively compared with the control .
沉淀磷肥