常量元素在国红苹果园土壤中的动态变化研究

Studies on Dynamic Changes of Major Elements in Soil of Guohong Apple Orchard

研究了国红苹果园中幼龄树和成龄树不同土层的土壤中常量元素的动态变化规律,结果表明：在整个生长周期内,幼龄和成龄国红苹果园土壤的磷元素含量均呈缓慢下降趋势;钾、钙、镁元素含量在0~20 cm和20~40 cm土层的变化较平稳,40~60 cm土层波动性较大;氮元素整体上均呈波浪式起伏的变化规律。典型性相关分析表明,0~20 cm和20~40 cm土层的幼龄和成龄果园土壤磷元素之间呈显著性正相关,其他4种元素之间无相关性。

The dynamic changes of major elements in different soil layers of young and adult Guohong apple orchards were stud -ied.The results indicated that：in the whole growth period of Guohong apple , the phosphorus content in the soil of both young tree and adult tree orchards was declined slowly; the contents of potassium , calcium and magnesium changed smoothly in 0-20-cm and 20-40-cm soil layers, but did markedly in 40-60-cm soil layer;the nitrogen content changed generally in the manner of undulating movement in all soil layers .Typical correlation analysis showed that there was significantly positive correlation between the phosphorus content in 0-20-cm or 20-40-cm soil layer of young tree orchard and adult tree orchard , while there was no correlation among the contents of other 4 elements.