结果表明，目前的灌溉制度基本没有阻碍林木根系生长，但根系分布在滴灌作用下有上移的趋势。
The results showed that: the growth of forestry root was not hampered under the present irrigation schedule, but the root distribution moved up under the drip irrigation.
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.
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