CAJ | 학술논문

始于20年前的土壤普查查明，陕西省耕地速效钾平均146 mg/kg，作为粮油基地的关中地区更高于此。这就掩盖了秦巴山区缺钾的严重性。当时秦巴山地缺钾已占40%，随着耕作水平提高和产量增长，秦巴山区耕地缺钾面积已接近80%。事实证明，缺钾已成为秦巴地区粮食增产的瓶颈。分析了秦巴耕地缺钾的原因和钾肥肥效，提出了相应的补钾方略。
시우20년전적토양보사사명，합서성경지속효갑평균146 mg/kg，작위량유기지적관중지구경고우차。저취엄개료진파산구결갑적엄중성。당시진파산지결갑이점40%，수착경작수평제고화산량증장，진파산구경지결갑면적이접근80%。사실증명，결갑이성위진파지구양식증산적병경。분석료진파경지결갑적원인화갑비비효，제출료상응적보갑방략。
The general survey of soil has been starting twenty years till now,the result show that the average quick-acting potassium in farmland is 146 mg/kg in Shaanxi,the central Shaanxi plain,as the grain and soil base,is more higher than that.These phenomena has covered the seriousness of lack of potassium in Qinba mountain area,in fact,the area of lack of potassium was nearly 40% in Qinba mountain area at that time,the area of lack of potassium is nearly 80% in that area with the increase of cultivation level and grain yield.The fact proves that the lack of potassium has become the limitation of increasing grain yield in this area.The general plan for adding potassium is put forward by analysing the reason of lack of potassium and potassium fertilizer efficiency in farmland of Qinba area.