新立村桃树种植中重视有机肥的施用，但仍以化肥为主，有机肥中氮和钾相对含量低于平均水平，而且不同施肥水平下桃树产量均呈现不同程度的先增后减趋势。新立村桃园有机质含量明显低于果园土壤临界值，pH 平均值在6．54～6．63之间，处于适宜桃树生长的偏酸性土壤环境，并且不同样本之间 pH 和有机质状况基本相同；土壤中碱解氮、速效磷、速效钾、交换性钙镁、有效铁和有效锌含量水平均呈现0～20 cm 土层含量明显高于20～40 cm 土层，并且0～40 cm 土层内有效铁和交换性镁含量适中，碱解氮、速效磷、速效钾和交换性钙含量超标。对桃园植株叶片中对应元素含量水平进行监测发现，氮、钾、锌和铁含量水平超标，镁和磷水平适宜，钙水平存在不足现象。因此，新立村桃园今后的施肥策略应该是适当增加有机肥的投入量，减少氮磷化肥的投入量，并且改良施肥方式和土层现状，减少土壤养分的流失和浪费，从而达到合理和优化施肥的目的。%Although the use of organic fertilizer was necessary in planting of peach in Xinli Village,chem-ical fertilizers were still dominated.The relative contents of nitrogen and potash in organic fertilizer were lower than the average level,and meanwhile,the peach production varied with the same trend of decreased after in-creased under different levels of fertilization.The content of organic matter was obviously lower than the critical value of orchard.The mean of pH value was between 6.54 and 6.63,which provided the acidic soil environment suitable for the growth of peach.The situations of pH value and organic matters were basically the same between different samples.The contents of N,P and K,exchangeable Ca,Fe and effective Zn in 0 ~20 -cm soil were significantly higher than those of 20 ~40 -cm soil,and the contents of Fe and exchangeable Mg were moderate, those of N,P,K and exchangeable Ca were excessive.The corresponding elements of peach leaves were moni-tored,then it was found that the levels of N,K,Fe and Zn were excessive,while those of Mg and P were mod-erate,and that of Ca was deficiency.Therefore,the fertilization strategy in peach orchard of Xinli Village in the future should be adjusted to appropriately add the organic fertilizer content,reduce the inputs of nitrogen and phosphorus fertilizers,and improve the fertilizing methods and soil conditions,so as to reduce the loss and waste of nutrients in the soil and achieve the purpose of the reasonable and optimized fertilization.
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