北方主要树种营养失调症状的研究

Study on Symptoms of Nutritional Disorder for Major Tree Species in Northern China

应用无土盆栽试验及比较化学分析法,进行了北方主要树种营养失调症状的研究。结果说明,林木体内营养元素水平降低到一定限度时,就会表现出某种特定的症状并影响林木的正常生长发育。其症状特征不仅与元素类型、迁移能力及生理功能有关,而且树种间也有差异。

Studies on symptoms of nutritional disorder for major tree species in northernChina by pot-culture with soilless culture and the comparative chemical analysis showed thatespecial symptom and influence on normal tree growth and development when nutritionalelement level reduced to some limitation. Symptoms had relationship with element type migr-ation capacity and physiological function of various nutritional elements and tree species.