CAJ | 학술논문

在盆栽条件下，以超高产大豆品种辽豆14、中黄35和普通大豆品种辽豆11为试材，探讨了超高产品种在不同施肥量和种植类型处理下根系的竞争力。结果表明，超高产品种和普通品种大豆的根系形态性状、根系活力和伤流成份在品种和品种×肥力互作间均存在显著差异。开花期，普通品种在不施肥条件下单播处理的根长、根表面积和伤流量较超高产品种分别高出46．3％、47．6％和27．9％，差异达显著水平。超高产品种在中肥和高肥水平下根系形态指标较高，在鼓粒期和混播处理中其根系活力、伤流量和伤流成份含量均显著高于普通品种。说明在施肥量充足时，超高产品种的根系较普通品种表现了良好的生长优势和吸收能力。
재분재조건하，이초고산대두품충료두14、중황35화보통대두품충료두11위시재，탐토료초고산품충재불동시비량화충식류형처리하근계적경쟁력。결과표명，초고산품충화보통품충대두적근계형태성상、근계활력화상류성빈재품충화품충×비력호작간균존재현저차이。개화기，보통품충재불시비조건하단파처리적근장、근표면적화상류량교초고산품충분별고출46．3％、47．6％화27．9％，차이체현저수평。초고산품충재중비화고비수평하근계형태지표교고，재고립기화혼파처리중기근계활력、상류량화상류성빈함량균현저고우보통품충。설명재시비량충족시，초고산품충적근계교보통품충표현료량호적생장우세화흡수능력。
Super-high-yielding soybean cultivar Liaodou14 ,Zhonghuang35 ,and conventional cultivar Liaodou11 were used to study the root competitiveness of Super-high-yield soybean under different fertilizer rate (0 ,100 and 200 mg diammonium phosphate/kg soil) and population type (single seeding and mix seeding) .The result showed that the root morphological trait ,root vigor and bleeding sap amount of soybean showed a significant difference for cultivar and cultivar × fertility interaction .The root length ,root surface ,and bleeding sap of conventional cultivar Liaodou11 were higher than those of super-high-yield cultivar under the non-fertilizer treatment especially at blooming stage and single seeding treatment (46 .3% ,47 .6% and 27 .9% ) .On the other hand ,the root morphological index ,root activity ,bleeding and bleeding element content of super-high-yielding soybean cultivar was significant higher than that of the conventional culti-var ,which was more obviously at seed filling stage and mix seeding treatment .The results indicated that super-high-yield soybean root had higher growth rate and absorbing ability at abundant fertilizer rate .