巴彦淖尔市农业综合开发项目区耕地土壤养分状况及地区差异分析

Bayan nur city comprehensive agricultural development project area of farmland soil nutrient condition and regional difference analysis

该研究统计2012—2014年在巴彦淖尔市农业综合开发项目区取样测定的土壤养分含量数据,进行土壤全氮、有效磷、速效钾、有机质和全盐含量等重要养分指标的分析。结果表明：巴彦淖尔市农业综合开发项目区耕地土壤全氮以低量水平为主,大部分耕地全氮含量在0.57~1.07 g/kg;有效磷含量变幅较大,且多数土壤磷含量明显不足;土壤速效钾含量水平较高,80%被测区域在中量以上;有机质含量以中量水平为主,高含量与低含量并存;巴彦淖尔市耕地土壤盐碱化程度较低,但是也存在重盐地区。不同旗县区土壤及同一旗县区不同地点养分含量差异较大,须进一步加强测土配方施肥技术推广。

In this paper, 2012—2014 in Bayan nur city comprehensive agricultural development project area sample data determination of soil nutrient content, soil total nitrogen, available phosphorus, available potassium, organic matter and total salt content and other important indicators of nutrient characteristics. The results showed that the Bayan Nur city comprehensive agricultural development project area the soil total nitrogen was given priority to with low volume levels, most of the cultivated land in total nitrogen content between 0.57 to 1.07 g/kg;effective phosphorus content range is larger and most of the soil phosphorus content is obviously insufficient; soil available potassium content higher levels, measured area in the amount of 80% above; organic matter content is given priority to medium level, the high content and low content; the lower level of the soil salinization in the city, but there is also a double salt area. Different flag county soil and the same counties had differences in nutrient content which, must further strengthen soil testing formula fertilization technology popularization.