海南试验点不同年代玉米品种产量及农艺性状增益分析

Analysis on Yield and Other Agronomic Traits of Maize Varieties in Different Eras in Hainan Location

在海南试验点分析了我国近60年有代表性的34个品种产量及农艺性状的增益。结果表明:产量、出籽率、千粒重等12个农艺性状年代间均存在极显著差异,茎倒率和秃尖长年代间存在显著差异。海南试验点不同年代(1950年至2000年)玉米品种产量每年增益为46.4kg/hm2,与北京和新疆试验点的产量增益趋势一致,只是明显低于北京试验点。海南三亚冬季的生态环境适宜对我国不同年代玉米品种的产量增益进行分析。

This paper analyzed the yield and other agronomic traits from nearly 60 years on 34 representative varieties in Hainan location, showed that the traits such as yield, seed-producing percentage, 1 000-kernel weight and other 12 agronomic traits among different eras were significantly different, stem lodging rate and barren ear tip were also significantly different. The yield increased of maize varieties from different eras in Hainan was 46.4 kg/ha each year from 1950 to 2000. It was consistent with that tend...