【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。更多还原

【Abstract】 The yield and relative N,P,K-removed amounts in the treated block of ten-year succes-sive fertilization were not only higher than that of the check block,but also the reserved and avail-able contents of soil N,P increased.Although the reserved K in soil declined slightly within 5%。the content of available K increased limitedly.更多还原