连续十年施用不同肥料对土壤养分累积的研究

Effect of Ten-year Successlve Application of DifferentFertilizers on Accumulation of Soil Nutrients

摘要: 连续十年施肥的处理区,不仅作物产量比对照区高,带走氮、磷、钾量相应增多,而且土壤氮、磷总贮量和有效性含量亦提高,土壤钾素贮量虽略有下降,但都在5%以内,有效钾含量却略有增加。

Abstract: The yield and relative N,P,Kremoved amounts in the treated block of ten-year successive fertilization were not only higher than that of the check block,but also the reserved and available contents of soil N,P increased.Although the reserved K in soil declined slightly within 5%。the content of available K increased limitedly.