内蒙古河套灌区玉米优良品种筛选研究

Selection of Excellent Maize Varieties Based on Principal Component Analysis and Grey Correlation Analysis

内蒙古河套灌区存在玉米品种单一、产量低、品质差等问题,为了筛选出适宜该地区种植的玉米中晚熟优良品种,以当地常规主栽品种先玉1321为对照,引进16个玉米新品种在内蒙古河套灌区开展大田筛选试验,通过监测17个玉米品种的农艺性状、产量及产量构成因素等指标,应用主成分分析和灰色关联度相结合的分析方法对参试品种进行了综合评价。结果表明,在相同的密度与水肥管理条件下,不同品种的农艺性状、籽粒产量、草产量及产量构成因素之间存在差异显著性。其中,DF636株高比对照高12.00%;平安-2穗位比对照高8.89%;东单1331茎粗大于对照20.88%;东单1331籽粒产量和草产量均为最高,比对照品种分别增产33.20%和26.90%。综合分析得出,东单1331、吉农大598、DF636、平安-2、太育9号、龙4等6个品种综合表现最优,适合在内蒙古河套灌区推广种植,本研究结果可为内蒙古河套灌区玉米产业发展提供科学依据。

According to the production problems of maize(Zea mays L.)in Hetao irrigation area of Inner Mongolia,such as single variety,low yield and poor quality.The purpose is to screen out the fine varieties of middle and late maturity maize suitable for planting in Hetao irrigation area.Compared with the local conventional main cultivar Xianyu 1321,The field screening test of 16 introduced new maize varieties was carried out in Hetao Irrigation District,Inner Mongolia.The agronomic characters,yield and its components of 17 maize varieties were monitored.The combination of principal component analysis and grey relational grade was adopted to comprehensively evaluate the tested varieties.Under the same density and water and fertilizer management conditions.There were significant differences in agronomic traits,grain yield,grass yield and its components among different varieties(P<0.05).The highest plant height of DF636 was 12.00%higher than the control;The highest ear position of Ping'an-2 was 8.89%higher than that of the control.The stem thickness of Dongdan 1331 was 20.88%higher than that of control.The grain yield and grass yield of Dongdan1331 were the highest,which increased by 33.20%and 26.90%compared with the control varieties.The result shows that,Dongdan 1331,Jinongda 598,DF636,Ping'an-2,Taiyu 9and Long 4 had the best comprehensive performance,which were suitable for planting in Hetao irrigation areas of Inner Mongolia,Provide scientific basis for the development of corn industry in this area.