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在山东潮土进行田间试验,研究过磷酸钙和磷酸二铵施用对冬小麦-玉米轮作体系下作物磷吸收和土壤无机磷形态组成的影响。结果表明:施用磷肥处理小麦、玉米产量高于不施磷肥处理,磷肥种类与用量处理之间没有显著差异;过磷酸钙和磷酸二铵两种磷肥处理土壤不同形态无机磷含量之间差异不明显;P2O5 90和150kg/hm2过磷酸钙和磷酸二铵施用效果相当,因此磷肥施用量可以适当减少。
A field experiment was conducted in shady soils in Shandong Province to study the effects of SSP and DAP on phosphorus uptake by crops and inorganic phosphorus forms in winter wheat-corn rotation cropping system. The results showed that there was no significant difference between the treatment of phosphate fertilizer and the treatment of phosphate fertilizer on the yield of wheat and maize under phosphate fertilizer application. There was no significant difference in the content of inorganic phosphorus in soil between the treatments of superphosphate and diammonium phosphate fertilizer ; P2O5 90 and 150kg / hm2 superphosphate and diammonium phosphate application effect is equivalent, so the amount of phosphate fertilizer can be appropriately reduced.