经过多年橡胶林养分循环的系统研究,综合考虑了全树各器官养分的需求、肥料的有效性及枯落物的归还量,采用SAS统计软件,对橡胶无性系PR107和RRIM600养分循环数据进行多元回归和相关性分析,建立了橡胶树各月生物量增量模型、叶片养分含量与树体平均养分含量模型以及生产诊断施肥模型,模型精度均达显著或极显著,可进一步完善叶片营养诊断施肥诊断理论。
Multiple regression and correlation analysis by SAS statistic software were used to analyze the nutrient datas of Clone PR107 and RRIM600, and to construct mathematieal models including monthly biomass increment, nutrient content between leaves and the whole tree, and diagnostic fertilization in production. It was considered comprehensively to the nutrient demand of different organs in rubber trees, the effectiveness and litter return in the models, which was useful for the leaf nutrient diagnosis of traditional fertilization.