根据近年来国外林木根系模型研究现状综述了垂直根型，水平根型，复合根型和具有一般性的根系动态模型。
The dynamic models of upright root, level root, compound root and general root are summarized according to foreign study actuality of forest root system model.
林木根系生长能在一定程度上降低土壤磷的固定作用，因此土壤磷的固定量和固定率从小到大依次为根际土、根区土、非根区土。
Root growth in soil can decrease phosphorus immobilization, as both the immobilization amount and its rate appear low in rhizosphere and high in unrooted bulk soil.
造林前用双吉尔—GGR6号植物生长调节剂对华北落叶松苗进行浸根处理，可提高造林成活率和林木生长量。
The seedlings of L. principis-rupprechtii, treated by means of root soaking in GGR6, would be beneficial to raise survival rate for afforestation and to increase growth rate.
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