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吉单631不同密度植株分蘖对产量及产量构成的影响试验,结果表明,玉米种植密度在2 000株/667 m2、3 000株/667 m2、4 000株/667 m2、5 000株/667 m2、6 000株/667 m2时,去除分蘖或保留分蘖,对玉米产量无显著影响.种植密度4 000株/667 m2时,去除分蘖、保留分蘖的产量最高.明确了吉单631在生产中保留分蘖,能达到省工省力,促进节本增效生产的目的.在生产中保留玉米分蘖,对提升该区域玉米高产高效生产能力具有促进作用.“,”The study was carried out on the effects of different tiller density on yield and yield components of Jidan 631,the results show that,removal of tiller or retained tiller had no significant effect on the yield of maize,when the planting density of 2000 plants/667 m2,3000 plants/667 m2,4000 plants/667 m2,5000 plants/667 m2,6000 plants/667 m2.The highest yield with removal of tiller or retained tiller was the planting density of 4000 plants/667 m2.Jidan 631 in the production keep tiller,could save labor and time,to promote the efficiency of the section production purposes.Keep tiller in production had promoting effect to enhance the production capacity of high yield in the region.