种植密度和施氮量对玉米‘伊单52’和‘伊单81’产量的影响

Plant Density and Nitrogen Amount Affecting the Yield of Maize('Yidan52' and 'Yidan81')

为蒙西地区玉米栽培及试验数据分析评价提供参考,以玉米品种‘伊单52’和‘伊单81’为试验材料,进行大田试验。应用GGE双标图法分析研究3个氮肥水平和5个密度水平下玉米产量、叶面积指数、干物质变化。结果表明在A2氮肥水平下,‘伊单52’叶面积指数高于A1和A3氮肥水平,‘伊单52’和‘伊单81’群体干物质积累量最高。‘伊单52’和‘伊单81’在5个密度、3个肥料水平下的产量、叶面积指数、群体干物质重GGE双标图中,分别展示了各处理真实信息的82.3%和70.7%。

The aim is to provide a basis for maize cultivation and the analysis and evaluation of test data inwest Inner Mongolia. Maize varieties‘Yidan 52＇and‘Yidan 81＇were taken as materials in a fieldexperiment. The changes of yield, leaf area index and dry matter were studied under three nitrogen fertilizerlevels and five density levels, by GGE-biplot analysis. The results showed that under A2 nitrogen level, theleaf area index of‘Yidan 52＇was higher than that of A1 and A3, and the dry matter accumulation of‘Yidan52＇and‘Yidan 81＇was the highest. The GGE-biplot of‘Yidan 52＇and‘Yidan 81＇under the five densityand three fertilizer levels showed 82.3% and 70.7% of the true information of each treatment in yield, leaf areaindex and population dry matter weight.