CAJ | 학술논문

目的探索不同氮磷钾水平对类芦Neyraudia reynaudiana生长状况的影响．方法采用营养液砂培试验，对优良水土保持植物类芦在不同氮、磷和钾供应水平下的响应规律进行了研究．结果和结论0.750 mmol· L－1的氮和0.030 mmol· L－1的钾会显著影响类芦生长，降低类芦地上部和地下部生物量；低磷（0.005 mmol· L－1）对类芦地上部生物量无显著影响，但会显著降低地下部生物量；低磷和低钾（0.030 mmol· L－1）对类芦生长的影响显著小于0.750 mmol· L－1氮水平的影响，在低磷和低钾条件下，类芦根系长度和根表面积显著增加，表现出对低磷和低钾胁迫较强的适应和自我调节能力．用类芦进行植被恢复时，氮素的补充更为重要．
목적탐색불동담린갑수평대류호Neyraudia reynaudiana생장상황적영향．방법채용영양액사배시험，대우량수토보지식물류호재불동담、린화갑공응수평하적향응규률진행료연구．결과화결론0.750 mmol· L－1적담화0.030 mmol· L－1적갑회현저영향류호생장，강저류호지상부화지하부생물량；저린（0.005 mmol· L－1）대류호지상부생물량무현저영향，단회현저강저지하부생물량；저린화저갑（0.030 mmol· L－1）대류호생장적영향현저소우0.750 mmol· L－1담수평적영향，재저린화저갑조건하，류호근계장도화근표면적현저증가，표현출대저린화저갑협박교강적괄응화자아조절능력．용류호진행식피회복시，담소적보충경위중요．
Objective]To explore the effects of nitrogen , phosphorus and potassium levels on the growth of burmareed , Neyraudia reynaudiana.[Method] Nutrient solution-sand culture experiment was applied to study the response of burmareed which was a very excellent soil and water conservation plant at differ -ent nitrogen , phosphorus and potassium levels .[Result and conclusion]The results indicated that 0.750 mmol· L-1 N and 0.030 mmol · L-1 K significantly affected the burmareed growth and reduced the aboveground and underground biomass of burmareed .The concentration of 0.005 mmol· L-1 P did not affect the aboveground biomass , but significantly reduced the underground biomass .The effect of 0.750 mmol· L-1 N on the growth of burmareed was significantly stronger than that of 0.030 mmol· L-1 P and 0.030 mmol· L-1 K.In low P and K condition , burmareed could increase root length and surface area , which displayed its strong capacity of adapting and self-adjusting for low P and K stress .Supplement of nitrogen is very important for revegetation with burmareed .