玉米新品种吉单50产量构成指标与高产栽培技术研究

Yield Composing Indexes and the High-yield Culture Technique of New Maize Hybrid Jidan50

以先玉335、郑单958高产品种为对比材料,分别在吉林省东部山区(桦甸)和中部地区(公主岭)进行吉单50玉米新品种在超高产条件下的产量构成指标及超高产群体结构特征的研究。结果表明,吉单50具备高产潜力,在最佳肥水供给条件下,最适密度范围为7万～8万株/hm2,群体叶面积指数高达6.0～6.3,最高产量为14 113kg/hm2。

For the materials of JD50,XY335 and ZD958 high-yielding varieties,respectively.In eastern mountain area（huadian） and central area（gongzhuling）,the reserch on high-yielding population structure characteristics and yield index of JD50 were carried out in super-high-yield condition.The result showed that JD50 had high yield potential,in the best fertilizer and water supply conditions,the optimum density range was 7.5-8.0 million/ha and the maximum LAI was 6.0-6.3.