Soil acidization, low organic substance and effective nutrients, nutrition defect and disorder are the major problems in rubber plantations of Yunnan.
云南橡胶园土壤存在明显酸化、有机质下降、有效养分降低、缺素和营养失调等问题。
2
However due to the disorder state of library structure system, humanity can not fully use the existing collections to gain the knowledge nutrition.
然而图书馆构造制度中的无序状态，使人类不能充分地运用已有的藏书使自身获得知识的养料。
3
For the first bearing fruit tree, high rate of generation of xanthochroism of secondary fruit of the navel orange is closely concerned with nutritiondisorderof Ca in the tree.