掖单13号等玉米品种增产潜力及优化措施的研究  

Yield Increasing Potential and Selection of Optimal Cultivation Measures for the Maize Varieties of YEDAN 13 ETC.

作　　者：刘俊明[1] 李振文[2] 李治良[3] 王日升 

机构地区：[1]沈阳农业大学农学系 [2]沈阳市农业局 [3]沈阳市农业技术推广站 [4]抚顺市农业技术推广站

出　　处：《沈阳农业大学学报》1992年第3期168-173,共6页Journal of Shenyang Agricultural University

摘　　要：通过五元二次回归正交旋转组合设计研究了掖单13号、海单2号、沈试26号和6107/340等玉米品种的增产潜力和优化栽培技术。试验证明,掖单13号、海单2号和沈试26号玉米现阶段产量潜力可以达到1000kg/mu,6107/340等品种最高产量为900kg/mu上下。密度、施氮、施磷、施钾和农肥的数量对产量均有影响,不同品种影响程度不尽相同,增大密度和增施氮肥是玉米大幅度增产的关键性措施。氮、磷、钾配合施用能彼此提高肥效,氮磷钾适宜配比为1:(0.33～0.47):(0.47～O.61),不同品种最适密度不同,掖单13号和沈试26号为4100～4200株/mu,海单2号和6107/340为38OO～3900株/mu。The five-factor rotation-regression-orthogonal combination was designed to study the yield increasing potential and to select the optimal cultivation measures for the varieties of YEDAN 13, HAIDAN 2, SHENSHI 26 and 6170/340. Field experiments showed that the yield potential of YEDAN 13, HAID AN 2 and SHENSHI 26 can reach 1000kg per mu and the maximum yield of 6107/340 was 887.9kg per mu. The effects of plant population density, rates of N,P,K and manure applied on maize yield are different with different varieties. The rate of N applied and plant population density are key measures in high yield cultivation. Suitable rates of N, P, K applied can increase fertilizer availability. Short application of one type of fertilizers can limit the other fertilizer availability. The reasonable ritio of N-P-K applied is 1:(0.33--0.47):(0.47--0.61) with reasonable plant population density of (4000--4200) plants per mu.

关 键 词：玉米 掖单13号 栽培 品种 

分 类 号：S513.04[农业科学—作物学]