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以黔南州8个县(市)核桃优树叶片与土壤为试材,对土壤性质和叶片营养元素的关系进行相关分析,以期研究土壤性质对叶片营养元素的影响。结果表明:土壤有效钾含量显著影响叶片钙的含量;土壤速效氮含量显著影响叶片钾的含量;土壤交换性钙含量显著影响叶片锰的含量;土壤交换性镁含量显著影响叶片镁的含量;土壤有效磷含量显著影响叶片氮的含量。试验表明核桃优树叶片营养元素的吸收与土壤养分密切相关,土壤养分状况显著影响核桃优树叶片营养元素的供给。
In order to study the effects of soil properties on nutrient elements in leaves, the relationship between soil properties and nutrient elements in leaves of walnut trees in 8 counties (cities) in Qiannan Prefecture was analyzed. The results showed that: the effective potassium content of soil significantly affected the content of calcium in leaves; the content of available nitrogen in soil significantly affected the content of potassium in leaves; the content of soil exchangeable calcium significantly affected the content of manganese in leaves; the content of soil exchangeable magnesium significantly affected the content of magnesium in leaves; Available phosphorus content significantly affected leaf nitrogen content. Experiments show that the absorption of nutrient elements in the leaves is closely related to soil nutrients, soil nutrient status significantly affect the supply of nutrients in the leaves of the excellent walnut trees.