CAJ | 학술논문

旨在为冀中南棉区棉花高产栽培群体调控和品种审定设置合理的品比试验提供理论依据。以衡棉4号、冀棉958和快育66为供试材料，于2012－2013年在冀中南棉区（河北深州）设置密度试验（37500，52500，67500株／hm2），研究种植密度对陆地棉株高、果枝数、叶面积指数和产量品质性状的影响，结果表明：随密度的增加，株高和叶面积指数增高、果枝数减少；产量构成因子单铃重和衣分降低，不同时期单株蕾花铃数也降低。群体产量随密度增加而提高，52500～67500株／hm2是冀中南地区棉花适宜种植的密度范围，可作为高产栽培群体调控和区域品比试验安排的参考密度。密度对棉铃纤维品质存在一定影响，随密度的增加，棉纤维上半部平均长度呈增加的趋势，马克隆值呈降低的趋势。
지재위기중남면구면화고산재배군체조공화품충심정설치합리적품비시험제공이론의거。이형면4호、기면958화쾌육66위공시재료，우2012－2013년재기중남면구（하북심주）설치밀도시험（37500，52500，67500주／hm2），연구충식밀도대륙지면주고、과지수、협면적지수화산량품질성상적영향，결과표명：수밀도적증가，주고화협면적지수증고、과지수감소；산량구성인자단령중화의분강저，불동시기단주뢰화령수야강저。군체산량수밀도증가이제고，52500～67500주／hm2시기중남지구면화괄의충식적밀도범위，가작위고산재배군체조공화구역품비시험안배적삼고밀도。밀도대면령섬유품질존재일정영향，수밀도적증가，면섬유상반부평균장도정증가적추세，마극륭치정강저적추세。
The purpose of this study was to provide theoretical basis for population control technique and find -ing the suitable planting density of variety comparison in this area .With Hengmian 4 ,Jimian 958 and Kuaiyu 66 as tested materials , we designed a density experiment in order to study the influence of planting density on plant height,fruit branch,leaf area index,yield and quality characters of upland cotton in mid-south region of Hebei in 2012 and 2013 .The results were as follows:Plant height and leaf area index increased as population density in-creased .Number of fruit branch decreased .Yield components single boll weight and lint percentage decreased as population density increased .Bud number , flower number and boll number per plant in different period also de-creased with population density .Production improved as population density increased .52 500 plants/ha to 67 500 plants/ha density was the suitable planting density range in mid-south region of Hebei and can be used as reference density of population control and variety comparison experiment .Density had certain influence on fiber quality .50%staple length increased and micronaire value decreased as population density increased .