【摘要】 在云南景谷不同立地条件的思茅松人工幼林设置样地,通过调查,进行林地土壤化学性质与思茅松林木树高、地径生长的相关性研究。结果表明:对思茅松林木树高、地径生长影响较大的是林地土壤的阳离子交换量,速效P、水解酸的含量和pH值,其次为有机质、全P、全N和全K的含量,影响较小的指标是盐基饱和度、速效N和速效K的含量。土壤的pH值为5.4~5.6,有机质含量为40~50 g.kg-1时较适宜思茅松林木的生长,而当其他土壤肥力指标较高时更适宜思茅松林木的生长。更多还原

【Abstract】 The correlation between tree height,basal diameter growth of Pinus kesiya var.langbianensis and soil chemical properties was studied by setting samples of different site conditions at Jinggu county of Simao.The results showed that cation exchange capacity,available P,hydrolysis acid and pH value affected the height and basal diameter growth of Pinus kesiya var.langbianensis significantly.Next came the content of organic matter,total P,total N and total K.The indexes with minor effects were base saturation,the contents of available N and available K.Soil pH value of 5.4⁵.6 and organic matter content of（40⁵0）g·kg^-1 were suitable for the growth of Pinus kesiya var.langbianensis.The higher fertilizer indexes were,the better Pinus kesiya var.langbianensis tree grew.更多还原