论文部分内容阅读
【目的】为加强兵团农田土壤养分的管理以提高农田钾素养分的产出效率提出建议。【方法】利用兵团第二次土壤普查以来的农田土壤钾素养分变化和20年来的农田钾素养分的投入状况的资料进行了综合统计分析。【结果】阐述了兵团农田土壤钾素含量降低及施钾增产的原因,认为兵团农田土壤钾素含量虽有降低的趋势,但是与全国相比仍属于极高水平,过多的和不合理的钾肥投入不仅会导致生产成本增加,还会造成钾素养分产出效率的降低。【结论】兵团农田钾肥的施用要有选择性,钾肥应该优先施用在喜钾作物和沙性缺钾的土壤上。
【Objective】 Suggestions are put forward to strengthen the management of farmland soil nutrients in the Corps and improve the output efficiency of potassium nutrients in the farmland. 【Method】 A comprehensive statistical analysis was made on the changes of soil potassium nutrition and the input of potassium nutrients in farmland over the past two years since the Second Corps census. 【Result】 The reasons for the decrease of soil potassium content and the increase of potassium production in the Corps farmland were described. It was considered that the soil potassium content of the Corps farmland had a tendency to decrease, but still remained extremely high, excessive and unreasonable compared with the whole country Potash fertilizer input will not only lead to increased production costs, but also result in lower yield of potassium nutrients. 【Conclusion】 The application of potash fertilizer in Corps farmland should be selective. Potash fertilizer should be applied preferentially to the soil of potassium-deficient crops and sandy potassium-deficient soil.