摘要
对郑单958和漯玉336两个品种在6个不同密度条件下进行研究，结果表明：郑单958的群体自我调节能力、耐密性较漯玉336好，在666．7m^2种植密度3500～6000株范围内其产量随密度增加而增加，呈直线增加趋势，6000株时产量最高为612．5 kg；漯玉336的最佳密度为4500株。密度与品种对SPAD值的影响大，漯玉336的SPAD均值大于郑单958。
Six planting densities were designed to screen a suitable one for the two maize cultivar Zheng-dan 958（ZD958） and Luoyu 336（LY336）.The results showed that ZD958 had stronger population self-reg-ulating ability and better tolerance to high density compared with LY336.The yield of ZD958 showed a linear increasing trend with the increase of planting density in a range of 3 500 ~6 000 plants per 666.7m2 .It reached the highest as 612.5 kg under the planting density of 6 000 plants per 666.7m^2 .The optimum plant-ing density was 4 500 plants per 666.7m2 for LY336.The SPAD value was influenced largely by different planting densities and cultivars.The mean of SPAD value in LY336 was higher than that in ZD958.
出处
《山东农业科学》
2015年第4期46-48,共3页
Shandong Agricultural Sciences
基金
国家玉米产业技术体系建设专项(nycytx-02)
关键词
玉米
密度
产量
耐密性
SPAD值
豫中南
Maize
Planting density
Yield
Tolerance to high density
SPAD value
Mid -south Henan Province
