CAJ | 학술논문

采用营养液培养方法,研究了缺磷对9个玉米品种苗期的生长发育、根系形态、根系活性、氮磷钾吸收和转运率的影响.结果表明:缺磷减少玉米的叶片数、株高、根系活跃吸收面积、植株干重、氮磷钾吸收量和磷钾转运率,增加玉米的总根长、根表面积、根体积、总吸收面积和根冠比.品种间比较,缺磷条件下以'蠡玉16'的干重最多,相对生物量最高为95.6%,原因是该品种有较大的根系表面积、活跃吸收面积、氮磷钾吸收量、氮磷转运率和磷钾根效比.
채용영양액배양방법,연구료결린대9개옥미품충묘기적생장발육、근계형태、근계활성、담린갑흡수화전운솔적영향.결과표명:결린감소옥미적협편수、주고、근계활약흡수면적、식주간중、담린갑흡수량화린갑전운솔,증가옥미적총근장、근표면적、근체적、총흡수면적화근관비.품충간비교,결린조건하이'려옥16'적간중최다,상대생물량최고위95.6%,원인시해품충유교대적근계표면적、활약흡수면적、담린갑흡수량、담린전운솔화린갑근효비.
Plant growth,root morphology and activity,uptake of N,P and K,and nutrients' transport efficiency of nine maize cultivars at the seedling stage were studied under the hydroponics and P deficiency conditions. The results showed that P deficiency decreased leaf numbers and height of plant,active uptake area of root,dry weight of plant,uptake of N,P and K,and three nutrients' transport efficiency. However,the root length,surface area,volume and total uptake area,and the ratio of root to shoot were all increased. Among nine maize cultivars and P deficiency treatments,the dry weight of liyu16 was the best and its relative biomass was the highest of 95.6% because it had larger root surface area,stronger root active uptake area,more uptake of N,P and K,higher transport efficiency of N and P,and root efficiency ratio of P and K.