【作者】 池富旺； 张培松； 茶正早； 罗微；

【Author】 Fuwang-Chi Peisong-Zhang Zheng Zao-Cha Wei-Luo (Chinese Academy of Tropical Agricultural Sciences-Rubber Research Institute,Danzhou,571737)

【机构】 中国热带农业科学院橡胶研究所；

【摘要】 利用地统计学的半方差函数,定量研究了中国热带农业科学院试验场三队橡胶园土壤表层(0～20 cm)全氮、速效磷、速效钾、有机质和 PH5种养分要素的空间变异规律。结果表明,胶园土壤养分的变异系数在6.72%～ 128.68%之间,有效磷的变异最大,变异系数达到128.68%,pH 的变异最小为6.72%。橡胶园土壤养分具有中等及强烈的空间相关性,土壤养分结构性变异大于随机变异,表明胶园土壤养分受空间结构变异(母质、土壤类型、地形等)的影响大于人为干扰、施肥等栽培措施的影响。胶园土壤养分的变程的范围为383.5～717.1 m。更多还原

【Abstract】 The characteristics of topsoil(0～20 cm)nutrition spatial variability have been quantitative stud- ied using semi variogram of geostatistics function in rubber field of experimental farm in Chinese Academy of Tropical Agricultural Sciences.The soil nutrients consisted of total N,available K,available P,OM,soil PH.The results showed that the soil properties varied sharply.The CV between 6.72% and 128.68%,a- mong which CV of available P was highest,while CV of soil PH was the lowest with the values being 128. 68% and 6.72%,respectively.There are stongly and middle correlation with soil nutrition in rubber field. The variance of soil nutirent structure was bigger than the anthropic factors,and the influence of the inter- nal on soil(soil parent material,soil type,topography and so on)was bigger than the anthropic,fertilizer measures and cultivate management,The soil variance distance was ranged between 385.9 and 717.1 metres.更多还原