摘要
[目的]研究不同密度对黑龙江省第三积温带机械化栽培玉米品种产量的影响。[方法]在110cm垄栽培模式下,对5个早熟、高产、优质、适合机械化的玉米品种进行密度试验,分析种植密度对不同玉米品种产量的影响。[结果]不同品种在不同密度下的产量表现各不相同,即使同一品种随着密度的增加产量也可能规律不明显。随着种植密度从6.75万株/hm^2增加到9.00万株/hm2,绿单2的产量增高,德美亚3的产量呈下降趋势,而龙福玉10、38P05、垦沃6的产量变化无规律。[结论]绿单2、龙辐玉10、38P05、垦沃6、德美亚3的最适密度分别为9.00万、8.25万、8.25万、8.25万、6.75万株/hm^2。
[Objective]To study the effects of different planting densities on yield of maize cultivars by mechanization cultivation in the third accumulated temperature zones in Heilongjiang Province.[Method]In a cultivation pattern of 110 cm ridge, five premature, high-yield, high-quality maize cultivars suitable for mechanization were used for density experiment. And the effects of planting density on yields of different cultivars were analyzed.[Result]Different cultivars showed different phenotypic traits under different densities, but with the increasing of the density, yield rules may be not obvious within the same cultivar. Within the density range from 675 thousand to 900 thousand plants/hm ^2, the yield of Lvdan 2 increased with the increasing of density, Demeiya 3 showed a declining yield, while there was no predictable pattern in the yield of Longfuyu 10, 38P05 and Kenwo 6.[Conclusion]The optimal densities of Lvdan 2, Longfuyu 10, 38P05, Kenwo 6 and Demeiya 3 were 90.0 thousand, 82.5 thousand, 82.5 thousand, 82.5 thousand and 67.5 thousand plants/hm ^2, respectively.
作者
李波
陈喜昌
张宇
张立国
任洪雷
LI Bo;CHEN Xi-chang;ZHANG Yu(Maize Research Institute, Heilongjiang Academy of Agricultural Sciences,Harbin,Heilongjiang 150086)
出处
《安徽农业科学》
CAS
2019年第16期31-32,共2页
Journal of Anhui Agricultural Sciences
基金
国家重点研发计划粮食丰产增效科技创新专项(2017YFD0300501)
关键词
种植密度
机械化栽培
玉米
产量
Planting density
Mechanized cultivation
Maize
Yield
