丹东地区5个不同类型玉米品种的最适种植密度研究

The Study on the Optimum Planting Density of Five Different Types of Maize Variety in Dandong Area

以丹东地区5个主栽玉米品种为材料,采用裂区试验设计,在低密、中密和高密条件下,对产量进行方差分析,结果表明:低密度(45000株/hm^2)条件下,平展型玉米品种丹玉88比紧凑、半紧凑类型品种更具产量优势;中密度(52500株/hm^2)条件下,先玉335、京科968半紧凑型品种产量优势更加明显;高密(60000株/hm^2)条件下,紧凑型品种农华101和郑单958能更好地发挥其丰产性。

The materials of this test are from the five main maize variety in Dandong, we take the split zone experiment design, and do an analysis of variance for the maize yeild under the condition of low density, medium density and high density. The result shows that under the condition of low density (45 000 plants/hm^2), the yeild of flat type Danyu 88 has more production advantage than that of the compact type and the semi-compact type;under the condition of medium density (52 500 plants/hm^2), the yeild advantage of Xianyu 335 and the semi-compact type of Jingke 968 is more apparent;under the condition of high density (60 000 plants/hm^2), the compact type of Nonghua 101 and Zhengdan 958 perform better in yeild.