CAJ | 학술논문

研究了添加不同比例AXIS硅藻土的坪床对杂交狗牙根草坪耐旱能力的影响。结果表明,与纯砂对照相比,添加5%,10%和15%的 AXIS 硅藻土能够提高干旱胁迫条件下草坪的生长速率、叶片的光化学效率、叶绿素含量、叶片的相对含水量,维持较低的叶片电导率,而且其改善效应随添加比例的增加而提高。添加硅藻土后草坪耐旱性能的提高可能与根际层土壤能够维持较高的含水量以及较大的根系生物量有关。
연구료첨가불동비례AXIS규조토적평상대잡교구아근초평내한능력적영향。결과표명,여순사대조상비,첨가5%,10%화15%적 AXIS 규조토능구제고간한협박조건하초평적생장속솔、협편적광화학효솔、협록소함량、협편적상대함수량,유지교저적협편전도솔,이차기개선효응수첨가비례적증가이제고。첨가규조토후초평내한성능적제고가능여근제층토양능구유지교고적함수량이급교대적근계생물량유관。
The water holding capacity of soil in root zone of sport turf could be improved by adding diatomite into the sand in turf bed.This study was conducted to evaluate the improvement of drought tolerance of ber-mudagrass by adding diatomite in different rates.The results showed that the growth rate,phytochemical effi-ciency,chlorophyll content,leaf relative water content could be increased by adding 5%,10% and 15% of diat-omite into the sand in root zone and maintained the lower electrolyte leakage compared to the pure sand control under drought stress.The improvement of drought tolerance was correlated to the application rate of diatomite. These results indicated that the improvement of drought tolerance by adding diatomite could result from the higher soil water content and the large root biomass under the drought stress.