CAJ | 학술논문

以南方林区广泛种植杉木无性系为研究对象，利用室内沙培模拟装置，设置缺磷（0 mg/kg KH2 PO4）、低磷（6 mg/kg KH2 PO4）和正常供磷（12 mg/kg KH2 PO4）3个供磷水平，构建邻株磷竞争环境。结果表明：邻株低磷竞争处理可明显促进杉木苗高生长，但竞争条件下，缺磷处理抑制杉木苗高生长。不同邻株磷竞争处理条件下杉木地径生长差异未达显著水平。在邻株低磷竞争处理条件下杉木根系长度、表面积、直径、体积等形态指标增量最大。
이남방림구엄범충식삼목무성계위연구대상，이용실내사배모의장치，설치결린（0 mg/kg KH2 PO4）、저린（6 mg/kg KH2 PO4）화정상공린（12 mg/kg KH2 PO4）3개공린수평，구건린주린경쟁배경。결과표명：린주저린경쟁처리가명현촉진삼목묘고생장，단경쟁조건하，결린처리억제삼목묘고생장。불동린주린경쟁처리조건하삼목지경생장차이미체현저수평。재린주저린경쟁처리조건하삼목근계장도、표면적、직경、체적등형태지표증량최대。
Objected with Chinese fir planted widely in South China recently , using the sand-culture indoor simula-tion pots supplying with three different P levels , which were 0 mg/kg, 6 mg/kg and 12 mg/kg of KH2 PO4 respectively, a competition between neighbor trees environment for P was constructed .Main results were as follows .The treatment of competition for low P could obviously promote the height growth of seedlings of Chinese fir , but P deficiency under competition stress inhibited the growth .Effects of all treatments with different supplying P levels and whether competi -tion or not on root collar diameter growth of Chinese fir were not significant , but the synergistic effect on the ground di-ameter growth had a certain influence .Increments of all the roots morphological indexes , including length , surface are-a, diameter and volume , were large under competition for low P .