梅列区耕地土壤肥力状况及施肥对策

Soil fertility status and fertilization strategies for cultivated land in Meilie District

将梅列区耕地土壤检测结果与1982年土壤普查结果进行对比分析,结果表明:耕地土壤有机质含量下降明显,磷素含量增加明显,钾素含量有所提高,但处于缺乏水平的面积仍然很高,pH值略有下降;交换性镁缺乏,有效硼严重缺乏,碱解氮及有效硫含量水平中等偏低,有效锌含量丰富;经济作物类田块整体土壤养分含量较高,pH值较低。同时提出相应的施肥对策。

The soil detection results of cultivated land in Meihe District was compared and analyzed with the results of soil investigation at same area in 1979, the results showed that, the organic matter decreased significantly, the phosphorus con- tent increased significantly, the potassium content somewhat increased but large area still maintain at deficient level, and the pH value decreased slightly. In addition, exchangeable Mg was deficient, available B was seriously deficient, alkaloid nitrogen and available S were at middle or slightly low levels, and available Zn was rich. Generally, the field for economic plants showed higher soil nutrient contents and lower pH value. Meanwhile the corresponding fertilization strategies were put forward in this paper.