CAJ | 학술논문

通过田间试验研究了不同种植密度（1．8万～5．4万株/hm2）对抗虫杂交棉中棉所75生长发育、产量及产量构成因素的影响。结果表明：随着种植密度的增大，棉花的全生育期会略缩短，株高先降低然后略增高，单株干物重、总果节数和单株果枝台数均减少，而单位面积总干物重却增加；随着密度的增大，棉株成铃向上部、向内围集中，而且单株成铃数明显减少，铃重、单位面积总铃数和单位面积籽棉产量均呈先增加后减少的趋势，而霜前花率则呈上升的趋势；最适宜的种植密度为3．6万株/hm2，此时籽棉产量最高，达4292．0 kg/hm2。
통과전간시험연구료불동충식밀도（1．8만～5．4만주/hm2）대항충잡교면중면소75생장발육、산량급산량구성인소적영향。결과표명：수착충식밀도적증대，면화적전생육기회략축단，주고선강저연후략증고，단주간물중、총과절수화단주과지태수균감소，이단위면적총간물중각증가；수착밀도적증대，면주성령향상부、향내위집중，이차단주성령수명현감소，령중、단위면적총령수화단위면적자면산량균정선증가후감소적추세，이상전화솔칙정상승적추세；최괄의적충식밀도위3．6만주/hm2，차시자면산량최고，체4292．0 kg/hm2。
The effects of different planting densities (18000~54000 plant/hm2) on the growth, development, yield, and yield components of hybrid insect -resistant cotton variety Zhongmiansuo 75 were studied through filed tests .The results indicated that:when plant density increased , the whole growth and developmental duration of cotton shortened , plant height decreased firstly and then slightly increased , dry matter weight per plant , total fruit-branch node number , and fruit-branch number per plant reduced , while total dry matter weight per unit area increased .As plant density rose , the boll formation concentrated towards the upper part and inner of cotton plants , the number of bolls per plant decreased significantly , the boll weight , total boll number per unit area and unginned cotton yield per unit area all increased firstly and then decreased , and the rate of pre-frost flowers showed a rising trend . The optimum planting density of Zhongmiansuo 75 in coastal area was 36000 plant/hm2 , and the highest unginned cotton yield 4292.0 kg/hm2 could be obtained under this condition .