【摘要】 为了探讨玉米品种郑单958在广西南宁种植的生态适应性和综合表现,以充分发挥郑单958的生产潜力,特引进郑单958与当地主栽品种迪卡007、正大619和正大99A12在南宁进行春、夏、秋季及不同密度种植对比试验,调查其全育期、农艺性状和产量。结果表明,郑单958全生育期<正大99A12<正大619<迪卡007,夏播生育期最短(84d),秋播最长(103d);综合性状表现良好,种植密度为4.8万～7.2万株/hm2时,空秆率为0,秃尖短,产量随密度增加而提高。郑单958完全适应南宁高温多雨的气候环境,是目前在广西全生育期最短,春、夏、秋季节均能高密度种植且产量都高于当地主栽品种的优良品种,经方差分析和多重比较,产量均极显著高于其他品种,值得大力推广。更多还原

【Abstract】 In order to explore the ecological adaptability and comprehensive performance of Zhengdan 958 in Nanning,Guangxi province,and to develop its production potential,comparative experiments were conducted between Zhengdan 958 and some local varieties,such as Dika 007,Zhengda 619 and Zhengda 99A12.The different varieties were planted in spring,summer and autumn with different densities,in order to study the growing period,agronomic traits and yield of Zhengdan 958.Results showed that Zhengdan 958 had the shortest growing period among the planted varieties,84 days in summer and 103 days in autumn.Zhengdan 958 had good combinative properties.The rate of empty stem was zero when the planting density was 48-72 thousand plants/ha,and the yield increased with the increase of density.Zhengdan 958 could adapt to the high temperature and rainy environment in Nanning.Compared to the local cultivars in Nanning,Zhengdan 958 was a fine variety with the shortest growing period and a significantly high yield by variance analysis and multiple comparisons.The variety could be planted with high density in spring,summer and winter,thus it could be worth popularizing.更多还原