橡胶园土壤全氮和速效钾养分合理取样位置研究

通过地统计学方法分析了土壤全氮和速效钾空间变异特征,并对其合理取样位置进行探讨,绘制了兼顾土壤全氮和速效钾综合养分的合理取样位置空间分布图.结果表明:橡胶园土壤全氮和速效钾综合养分合理取样位置主要受土壤速效钾含量分布决定;在空间分布上,综合养分的合理取样位置主要位于远离施肥穴的橡胶树行间萌生带和中间树头附近区域.此结果为南方长期经济作物土壤样品取样位置的确定提供一种新的尝试.

The Reliable Sampling Sites for Soil Total Nitrogen And Available Potassium in the Rubber Plantation

Geostatistics method was used to analyze the spatial distribution of soil total nitrogen and available potassium, and the sampling site maps of the combined nutrients were presented. The results indicated that the reliable sampling site of combined soil total nitrogen and available potassium was subjected to the character of available potassium. The sampling site of combined soil total nitrogen and available potassium was located between the rubber rhizome neck and in the shrub and ruderal zone which was far away the fertilization cave. As the location between the rubber rhizome neck is often influenced by some uncertain factors, so the best sampling site was in the shrub and ruderal zone which was far away the fertilization cave. The results would introduce a new method to determine the reliable soil sampling site for multi-year of growth period of crops in the South China.