CAJ | 학술논문

选择砂培处理的油茶无性系幼苗为对象，采用裂区设计，以0、0．05、0．5 mmol/L 3种磷处理水平（P0、P1、P2）模拟低磷胁迫，研究低磷胁迫对5个油茶优良无性系生长及氮、磷、钾吸收利用效率的影响差异。结果表明：不同油茶无性系间耐低磷胁迫差异显著；随低磷胁迫的加剧，各无性系的生物量和氮、磷吸收量减少，而利用率增加。无磷和低磷时湘林67和湘林69两个无性系的生物量和磷吸收量、利用效率均较高，叶片氮磷比（ N/P ）和叶片Δ（N/P）均较低，表明这两个无性系具有较好的体内磷养分循环利用机制，具备良好的耐低磷胁迫能力。
선택사배처리적유다무성계유묘위대상，채용렬구설계，이0、0．05、0．5 mmol/L 3충린처리수평（P0、P1、P2）모의저린협박，연구저린협박대5개유다우량무성계생장급담、린、갑흡수이용효솔적영향차이。결과표명：불동유다무성계간내저린협박차이현저；수저린협박적가극，각무성계적생물량화담、린흡수량감소，이이용솔증가。무린화저린시상림67화상림69량개무성계적생물량화린흡수량、이용효솔균교고，협편담린비（ N/P ）화협편Δ（N/P）균교저，표명저량개무성계구유교호적체내린양분순배이용궤제，구비량호적내저린협박능력。
A sand culture experiment with a split design was conducted to study the responses of seedlings of five Camel-lia oleifera clones under three levels of P stress (P0(0 mmol/L), P1(0.05 mmol/L), P2(0.5 mmol/L)). The results showed that five clones were significantly different in tolerance to low phosphorus stress. With low P stress exacerbating, the biomass and the N and P absorption of tested clones decreased, whereas the nutrient utilization efficiency increased. In low P and P deficiency treatments, the biomass and the P absorption and utilization efficiency of Xianglin67 and Xianglin69 were higher. Leaf (N/P)and leafΔ(N/P) ratio were lower. There were better phosphorus nutrient recycling mechanism in Xianglin67 and Xianglin69.Those clones could be considered to be excellent low P stress resistant clones.