Abstract: Abstract：In order to understand the soil fertility status of greenhouse vegetables in Yinan County， Shandong Province，soil samples were collected from greenhouse cucumber and tomato in six towns and one street to determine the soil nutrients，such as pH，salinity，organic matter，total nitrogen，total phosphorus，total potassium，alkali-hydrolyzed nitrogen，available phosphorus，available potassium and so on．The soil fertility was comprehensively evaluated by Nemerow index method．The results showed that there are acidification problems in greenhouse tomato and cucumber，with slightly acidic proportions of 25.00% and 44.83%，respectively．The light salinization and non-salinization of greenhouse cucumber were 43.75% and 34.37%，respectively．Whereas non-salinization，light salinization and moderate salinization of greenhouse tomato were 34.48%，31.03% and 24.14%，respectively．Except for total potassium（moderate level），the soil fertility status of greenhouse cucumber and tomato were in high grade and very high grade．Integrated soil quality evaluation grade of greenhouse cucumber belonged to average and fertile．While greenhouse tomato belonged to lean，average and fertile．The soil fertility was mainly influenced by the salt content，total potassium，and pH．Since soil acidifi cation and salt accumulation were related to surface accumulation of excessive nitrogen and phosphorus，nitrogen/phosphorus fertilizer should be reduced according to soil nitrogen/ phosphorus contents，and potassium fertilizer should be applied appropriately to reduce soil salinization and acidifi cation，and maintain high fertility.

Key words: Keywords：greenhouse vegetable, fertility characteristics, soil salinization, soil fertility evaluation

摘要： 摘 要：为了解山东沂南县设施菜地土壤肥力状况，以沂南县6 个乡镇和1 个街道的设施黄瓜和番茄土壤为研究对象，分别测定土壤pH、盐分、有机质、全氮、全磷、全钾、碱解氮、有效磷和速效钾等指标，通过内梅罗公式法对土壤肥力进行综合评价。结果表明：沂南设施黄瓜和番茄土壤均出现一定程度的酸化，微酸性占比分别为25.00% 和44.83%。设施黄瓜土壤以轻度盐渍化和无盐渍化为主，占比分别为43.75% 和34.37%，而设施番茄土壤则以无盐渍化、轻度和中度盐渍化为主，占比分别为34.48%、31.03% 和24.14%。沂南县设施黄瓜和番茄土壤的主要肥力指标，除钾外（全钾处于中等），其余均处于较高和高等级。设施黄瓜土壤肥力综合评价等级为一般和肥沃，而设施番茄土壤肥力综合评价等级为瘦瘠、一般和肥沃。其中，盐分、全钾和pH 是影响设施黄瓜和番茄土壤肥力的主要因素。由于土壤酸化和盐分积累均与土壤表层氮、磷积累有关，沂南县典型设施菜区的氮、磷养分投入应根据土壤氮、磷含量来确定，适当补充钾素，降低土壤盐渍化和酸化程度，从而保持较高的土壤肥力。

关键词: 关键词：设施蔬菜, 肥力特征, 土壤盐渍化, 土壤肥力评价