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本文研究了黄淮海平原二个主要农业自然经济类型区定位监测点的农田土壤养分收支平衡状况 ,并用养分允许平衡盈亏率进行评价。玉田县和陵县试区 ,N盈余分别平均为 82 .7～10 7.1、32 .0～ 184 .2 kg/ hm2 .a,可能会造成 N素的大量损失和引起较严重的环境污染 ;P2 O5盈余分别平均为 2 1.1～ 2 2 .9、74 .3～ 77.5kg/ hm2 .a,玉田县试区磷肥的施用基本合理 ,而陵县试区磷肥未得到合理高效利用 ;K2 O亏缺分别平均为 54.2～ 78.5、183.3～ 2 16.7kg/ hm2 .a
In this paper, the balance of farmland soil nutrient balance in the two main monitoring areas for agricultural economy and natural area in Huang-Huai-Hai Plain was studied, and the balance of profit and loss was evaluated by the balance of nutrients allowed. Yutian County and Ling County trial, N surplus averaged 82.7 ~ 10 7.1,32 .0 ~ 184 .2 kg / hm2.a, may cause a large loss of N and cause more serious environmental pollution; P2 O5, respectively, the average surplus of 2 1.1 ~ 2 2 .9,74 .3 ~ 77.5kg / hm2.a, Yutian experimental area phosphate fertilizer application is reasonable, and Lingxian pilot area phosphate fertilizer is not rational and efficient use; K2 O deficit Respectively, an average of 54.2 ~ 78.5,183.3 ~ 2 16.7kg / hm2