CAJ | 학술논문

[目的]研究在大田栽培和自然光照条件下,人工模拟紫外辐射(UV-B,280～320 nm)增加对棉花生物性状、根系生长、产量和品质之间的影响.[方法]在自然光照的基础上,通过人工增加对棉花UV-B辐射,设置4个处理,每个处理的辐射剂量分别为0(R0)、0.5(R1)、1(R2)和1.5 w/m~2(R3).研究UV-B辐射增强对棉花生物性状指标,如叶片表观伤害、株高、茎粗、叶面积等以及根系生长指标特征参数、产量和品质的影响.[结果]随着辐射时间的延长和辐射剂量的增强,棉花叶片可见伤害症状越来越严重,R1、R2和R3处理棉花的株高和茎粗与对照R0相比达到了显著差异(P<0.05),各个处理之间叶面积差异达到了显著水平,单株干质量达到了极显著水平(P<0.01);与对照相比根系形态发生了明显的变化,R1、R2和R3处理分别比对照的根长、根表面积、根平均直径、根密度和根体积都有所减小;各个处理的棉花产量和品质显著低于对照.[结论]UV-B辐射增强使棉花地上部分和根系之间存在密切的直接关系,UV-B辐射强度越大对棉花的影响就越大.
[목적]연구재대전재배화자연광조조건하,인공모의자외복사(UV-B,280～320 nm)증가대면화생물성상、근계생장、산량화품질지간적영향.[방법]재자연광조적기출상,통과인공증가대면화UV-B복사,설치4개처리,매개처리적복사제량분별위0(R0)、0.5(R1)、1(R2)화1.5 w/m~2(R3).연구UV-B복사증강대면화생물성상지표,여협편표관상해、주고、경조、협면적등이급근계생장지표특정삼수、산량화품질적영향.[결과]수착복사시간적연장화복사제량적증강,면화협편가견상해증상월래월엄중,R1、R2화R3처리면화적주고화경조여대조R0상비체도료현저차이(P<0.05),각개처리지간협면적차이체도료현저수평,단주간질량체도료겁현저수평(P<0.01);여대조상비근계형태발생료명현적변화,R1、R2화R3처리분별비대조적근장、근표면적、근평균직경、근밀도화근체적도유소감소;각개처리적면화산량화품질현저저우대조.[결론]UV-B복사증강사면화지상부분화근계지간존재밀절적직접관계,UV-B복사강도월대대면화적영향취월대.
[Objective]The main aim of the present paper was to study the effects of UV-B radiation on biological trait,root growth ,yield and germplasm of cotton under the field experiment.[Method]Based on the sun light,4 treatments were designed to inhance UV-B radiation of cotton,the normal dose of every treatment radiation were follows:0 kJ/m~2 (R0),0.5 kJ/m~2(R1),1.0 kJ/m~2 (R2) and 1.5 kJ/m~2 respectively.The effect of enhancing UV-B radiation on biological trait index such as leaves,plant height,stem diameter,leaf area and the index of root growth,yield and quality of cotton were investigated.[Result]Results show that with the extension of radiation time and radiation enhanced leaf visible injury became more serious,height and stem diameter of R1,R2 and R3 reached a significant difference(P<0.05),all differences of leaf area treated reached a significant level,dry weight per plant reached a best significant level(P<0.01); compared with the control,the root morphology changed dramatically,length of root of R1,R2 and R3 have been reduced compared with that of control;quality and yield of cotton was significantly lower than that of control.[Conclusion]The enhanced UV-B radiation made a close relation between aerial part and root part of cotton,the greater UV-B radiation,the geater effect on cotton.