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采集辽宁省４个重点保护地蔬菜产区不同利用年限的土壤样本８０个，进行土壤肥力现状分析研究，结果表明：保护地耕层土壤养分与相邻粮田比，有机质、全Ｎ、Ｐ、速效Ｎ、Ｐ、Ｃｕ、Ｆｅ、Ｍｎ表现积累，而Ｃａ、Ｍｇ、Ｓｉ、Ｂ表现耗竭，Ｋ和Ｚｎ增减各半，其中速效Ｐ增幅最大，达２６．６６％～７３５６％，全Ｐ、有机质、全Ｋ、速效Ｎ、Ｋ增幅分别为１６．３７％～２３５．１４％、３％～１６５．８６％、１．６７％～４１．６６％、３．１３％～１４５．０５％和－６０％～１４９．７３％。无论保护地还是粮田有效Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ均较丰富，含量分别为１．３～４．３２、９．８～９３、１４．９～１７７和１．８～１６．４ｍｇ／ｋｇ，随着耕种年限的增加，保护地较相邻粮田有效Ｃｕ、Ｆｅ、Ｍｎ提高为３．１６％～９８．９４％、１．２９％～２６５．６３％和４．８２％～１５４．２９％。保护地土壤有效Ｂ＜０．５ｍｇ／ｋｇ土样本占总数的８５％以上，表明保护地土壤普遍缺Ｂ。新建保护地（３年以内）与种植年限较久保护地（１０年以上）相比，全Ｎ、全Ｐ和速效Ｎ、Ｐ、Ｆｅ、Ｍｎ积累较快，主要是常年大量施入有机肥和Ｎ、Ｐ肥的结果，而全Ｋ和速效Ｋ、Ｃａ、Ｍｇ、Ｓｉ及Ｂ呈减少趋势，?
A total of 80 soil samples were collected from 4 key protected areas in Liaoning Province, and the soil fertility was analyzed. The results showed that the relationship between soil nutrients and grain-yield ratio, organic matter, total N, P, The available N, P, Cu, Fe and Mn showed accumulation while Ca, Mg, Si and B showed depletion while the K and Zn increased and decreased by half. The maximum increase of available P was 26.66% ~ 7356% The increase rates of organic matter, total K and available N and K were 16.37% ~ 235.14%, 3% ~ 165.86%, 1.67% ~ 41.66%, 3.13% ~ 145.05% and -60% ~ 149.73%. The contents of Cu, Fe, Mn and Zn were all higher in protected areas and grain fields with the contents of 1.3 ~ 4.32, 9.8 ~ 93, 14.9 ~ 177 and 1.8 ~ 16.4mg / kg With the increase of farming years, the effective Cu, Fe and Mn of the adjacent areas in the protected areas increased from 3.16% to 98.94%, 1.29% to 265.63% and 4.82% to 154, respectively. 29%. Protected soils effective B <0.5mg / kg soil samples accounted for more than 85% of the total, indicating that protected areas generally lack B soil. Compared with those with longer planting years (more than 10 years), the total N, P, and available N, P, Fe and Mn accumulate rapidly in the new protected areas (mostly within three years), mainly due to the large amount of organic fertilizer N, P fertilizer results, while the total K and available K, Ca, Mg, Si and B showed a decreasing trend?