【摘要】 通过小麦幼苗盆栽试验,研究以泥碳、褐煤及风化煤为原料制得的硝基腐植酸铵对³²P 标记过磷酸钙肥效的影响。试验证明,添加三种原料制成的硝基腐铵均能促进植物生长,提高植物含磷量。褐煤及风化煤硝基腐铵显著提高磷肥利用率,泥碳硝基腐铵提高土壤有效磷"A"值,促进植物吸收土壤磷。土柱试验中,三种硝基腐铵均能促进磷肥向下移动,增加下层土壤中有效磷-³²P 的含量,其中泥碳硝基腐铵效果尤显。更多还原

【Abstract】 The effect of ammonium nitro-humus from peat,brown coal and weathe- ring coal on fertilizer utilization by young wheat was studied by using ³²P labelled calcium superphosphate. Ammonium nitro-humus from all 3 sources promoted plant growth and increased the P-content in the plants.Ammonium nitro-humus from brown coal and weathering coal increased the utilization rate of phosphorous ferti- lizer.Ammonium nitro-humus from peat,however,raised "A"value in the soil and stimulated the absorption of soil phosphorus by plant. By using soil column test,it has been shown that all of ammonium nitro- humus,especially ammonium nitro-humus peat,parts stimulated the mobili- ty of P,and the P-content in the lower of soil was increased.更多还原