云南东风农场橡胶树叶片养分空间分布特征

通过对东风农场橡胶树叶片养分含量的分析测定,运用GIS技术将叶片养分含量进行重分类,得到东风农场橡胶树叶片养分含量等级分布图.结果表明:东风农场橡胶树叶片钙和钾含量较为丰富,其中钙含量最为丰富,氮和磷含量均比较缺乏且具有相似的空间分布特征,镁含量最为缺乏.氮、磷、钾和镁处于缺以下水平的面积分别占全场面积的38.61％、32.2％、13.72％和52.82％,钙含量没有处于极缺水平的地区,仅有部分诊断区处于缺水平,处于缺水平的面积仅占全场面积的0.35％.

Spatial distribution characteristics of rubber leaf nutrients in Dongfeng farm of Yunnan province

The spatial distribution of rubber leaf nutrient content in Dongfeng farm was obtained using GIS technology to reclassify nutrient content gained from previous analysis and measurement. The results showed that the contents of calcium and potassium in rubber leaves were abundant, and the content of calcium was the highest in all tested nutrition elements. The contents of nitrogen and phosphorus, which had similar spatial distribution characteristics, were relatively deficient, while the content of magnesium was the least. As to the contents of nitrogen, phosphorus, potassium and magnesium, the areas those below deficiency accounted for 38.61%, 32.2%, 13.72% and 52.82%, respectively. No erea of significant deficient level of calcium content was observed , only few were in deficient level, accounting of 0.35%.