According to the survey data from farmer and statistics, the paper analyzed and studied the situation of fertilization of vegetable in greenhouses in Langfang and their nutrient balances. The results showed that the fertilizer amount was higher of vegetable in greenhouses. The nitrogen, phosphorus and potassium in all vegetable fields were all over-used. The surplus amount of nitrogen, phosphorus and potassium were 398.0 kg/hm2,613.0 kg/hm2 and 278.0 kg/hm2 respectively.%采用农户抽样调查和统计数据相结合的方法,对廊坊市大棚蔬菜的施肥现状及农田养分平衡进行了分析和研究,结果显示:大棚蔬菜的施肥量较高,各种蔬菜的氮(N)、磷(P2O5)、钾(K2O)素均为盈余状态,其中氮素盈余量平均为398.0 kg/hm2,磷素盈余量平均为613.0 kg/hm2,钾素盈余量平均为278.0 kg/hm2.
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