CAJ | 학술논문

以中早熟棉花品种衡棉4号为试验材料，在等行距0.8m 条件下，设置3个种植密度水平（3.75万、5.25万和6.75万株/hm2），研究了不同种植密度对棉花成铃时空分布及产量性状的影响。结果表明：不同的种植密度下，棉花成铃纵向均以中下部1～10节果枝为主体，横向均以1～2节果节为主体。随着种植密度的增大，衡棉4号第1果枝着生位置增高，果枝上冲，株型变得紧凑，结铃也趋于集中。其中，1～5节果枝的成铃数占总铃数的比例呈增加趋势，而6～10节果枝的成铃数占总铃数的比例则呈降低趋势，11节及以上果枝的成铃数占总铃数的比例表现为先降低后升高趋势；1～2节果节的成铃数占总成铃数的比例逐渐增大，而3～4节果节和5节及以上果节的成铃数占总铃数的比例则逐渐降低；从成铃时间上看，伏前桃和伏桃成铃数逐渐增多。当种植密度为6.75万株/hm2时，衡棉4号籽棉产量、皮棉产量和霜前花率均最高，分别达到了3310.61 kg/hm2、1271.90 kg/hm2和94.94％。
이중조숙면화품충형면4호위시험재료，재등행거0.8m 조건하，설치3개충식밀도수평（3.75만、5.25만화6.75만주/hm2），연구료불동충식밀도대면화성령시공분포급산량성상적영향。결과표명：불동적충식밀도하，면화성령종향균이중하부1～10절과지위주체，횡향균이1～2절과절위주체。수착충식밀도적증대，형면4호제1과지착생위치증고，과지상충，주형변득긴주，결령야추우집중。기중，1～5절과지적성령수점총령수적비례정증가추세，이6～10절과지적성령수점총령수적비례칙정강저추세，11절급이상과지적성령수점총령수적비례표현위선강저후승고추세；1～2절과절적성령수점총성령수적비례축점증대，이3～4절과절화5절급이상과절적성령수점총령수적비례칙축점강저；종성령시간상간，복전도화복도성령수축점증다。당충식밀도위6.75만주/hm2시，형면4호자면산량、피면산량화상전화솔균최고，분별체도료3310.61 kg/hm2、1271.90 kg/hm2화94.94％。
With middle-early mature cotton Hengmian No.4 as tested material , three planting density levels of 3.75 ×104, 5.25 ×104, 6.75 ×104 plants/hm2 were set under equal row space 0.8 m condition and effects of different planting densities on bolls spatial and temporal distribution and yield were studied.The results showed that the 1-10 fruit branches and the 1-2 fruit nodes were the key positions for bolls setting of cotton under different planting densities.With the increasing of planting density , the growth position of first fruit branch was increased and fruit branches were up, plant type become compact and bolls also tended to concentration.Proportion of bolls number on the 1-5 fruit branches in total bolls number increased , while the trend was contrary on the 6-10 fruit branches.Proportion of bolls number on more than 11fruit branches in total bolls number first decreased and then increased.Proportion of bolls number on the 1 -2 fruit nodes in total bolls number increased gradually while the trend was contrary on the 3-4 and more than 5 fruit nodes.According to temporal distribution of boll setting , early summer bolls number and summer bolls number increased with the increasing of planting density.When the planting density was 6.75 ×104 plants/hm2,the seed yield , lint yield and flowering rate before frost of Hengmian No.4 were the highest and reached 3 310.61 kg/hm2, 1 271.90 kg/hm2 and 94.94% respectively.