河北省农田土壤化肥污染及其防治对策

论述了不当和过量施用化肥对土壤造成的污染主要表现在增加土壤重金属与有毒元素 ,促进土壤酸化 ,导致营养失调与NO2 积累 ,土壤结构破坏 ,以及微生物活性的降低等 ,给农业的可持续发展带来一系列问题。针对农田土壤化肥污染的严峻现实 ,提出了相应的防治对策 :①强化环境保护意识 ;②增施有机肥料 ;③大力推广配方施肥技术 ,减少盲目施肥 ;④加强土壤肥料监测和管理 ;⑤施用化肥增效剂 ;⑥改进施肥方法

Pollution of Chemical Fertilizer in Farmland and The Measures of Controlling It in Hebei Province

The pollution that caused by unsuitable and excessive using chemical fertilizer in soil is discussed in this paper. The main characteristics of the pollution are the increase of heavy metal and toxic elements in soil, which make the soil acidified, destroy the soil construction, lead to unbalance of the nutrition and the accumulation of NO 2 as well as the decline of the bioactivity of microbes, etc. The sustainable development of agriculture is obstructed by these matters.In accordance with these severe facts, some suggestions are as follows: upholding the sense of environment protection, increasing applied organic manure, spreading technologies of prescribed applying to decrease blind using, strengthening monitor and management, applying reinforce agents of fertilizer, improving methods of fertilizer