Continuous fertilization for 22 years would result in the gradual decreasing of soil total potassium content directly connected with the various fertilizations, which leads to a lack of potassium in red dry land.
连续施肥22年,土壤全钾含量随着施肥年限的增加,均有逐渐降低的趋势,其下降幅度因施肥不同而变化,造成了红壤旱地钾素的缺乏。
参考来源 - 长期定位施肥对红壤肥力及作物的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
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