【摘要】 玉米子粒产量和品质决定于基因型和环境因素。通过在辽宁省内的沈阳、铁岭、丹东三地种植连玉16、丹玉39、郑单958两类不同株型品种,系统比较了玉米产量、品质的密度效应以及不同生态区玉米产量和品质的差异,并分析了差异的原因。结果表明,连玉16、丹玉39、郑单958这3个品种的产量、总淀粉含量、粗蛋白含量、粗脂肪含量在3个地点之间都达到了显著差异水平,3个品种的产量以沈阳试点最高,铁岭试点次之,丹试点东最低;3个品种的粗脂肪含量为沈阳试点>丹东试点>铁岭试点;粗蛋白含量丹东试点>沈阳试点>铁岭试点;总淀粉含量为铁岭试点>沈阳试点>丹东试点。三地光照、积温和降水量的不同是造成产量差异的重要原因,同时也是玉米子粒品质形成的关键因子。通过品种、密度等调控措施来充分利用生态资源,发挥区域优势,可实现辽宁省玉米的优质高产。更多还原

【Abstract】 The yield and quality of maize is mainly affected by genotype and environment. The effects of plant density and ecological environment on the grain yield and quality of three different plant-types hybrids plate Lianyu16, Danyu39 and compact Zhengdan958 in three different ecological areas Shenyang, Tieling, Dandong of Liaoning province. The results showed that the difference of grain yield and quality existed significantly between different areas. The order of the grain yield was Shenyang > Tieling > Dandong, the order of the grain protein contents was Dandong > Shenyang > Tieling, the order of grain starch was Tieling > Shenyang> Dandong, the order of grain oil contents was Shenyang > Dandong > Tieling. Difference in temperature, illumination and rainfall was one important reason that the yield and the grain quality were different in three areas. Accumulated temperature and illumination time after pollination were the main different reason factors. The higher grain yield and better quality of maize in Liaoning province can be obtained by different cultivars, densities and the other cultivated measures.更多还原