摘要
以郑单958为试验材料,研究不同播期对春玉米生长发育、产量及品质的影响。结果表明,播期对拔节期至大喇叭口期单株叶面积、株高影响较大,4月27日和5月6日播期处理株高、单株叶面积大于其他处理;4月19日播期处理开花前干物质积累量(DMA)高于其他处理,开花后导致早衰;5月25日播期处理开花前和开花后DMA均小于其他处理;5月7日播种的玉米产量最高;早播(4月19日)处理百粒重比5月7日播种低9.91%;晚播(5月25日)处理百粒重和穗粒数分别比5月7日播种降低11.27%和13.53%。相关分析表明,不同播期处理玉米产量、脂肪含量分别与日照时数、积温(≥10℃)呈极显著正相关(P<0.01),蛋白质含量与日照时数、积温(≥10℃)、降雨量呈极显著负相关(r=-0.798、r=-0.750、r=-0.724)。5月7日播期处理玉米子粒中淀粉和营养成分总含量最高,分别达72.10%和84.60%,为最佳播种日期。
Variety of hybrid maize ZhengDan958（ZD958） which has been widely released in the area was chosen as the material.The result showed that the sowing date had great influence on plant height and leaf area mainly at jointing to booting stage,the leaves area per plant and plant height is larger under the treatment of SD1and SD2（sowed in April 19th and May 7th,respectively）.DMA under the treatment of April 19th sowing was biggest before silking stage,but resulting in premature senility after silking compared with the other treatment.Under the treatment of May 25th sowing,DMA was the minimum both before and after silking stage.The highest maize yield was SD3（sowed in May 7th）,Hundred-kernel weight was lower 9.91% than SD3 for treatment of SD1（sowed in April 19th）,hundred-kernel weight and kernel number per ear were lower 11.27% and 13.53% respectively to SD5（sowed in May 25th）.Correlation analysis also showed that had very significantly positive correlation（P0.01） between maize yield,content of fat and accumulated temperature（≥10℃）.But had significant negative correlation between protein content and accumulated temperature（≥10℃）.In conclusion,the sowing date of May 7th,whose kernels starch and total nutrient content were highest with 72.10% and 84.60%,respectively,also was the optimum sowing date.
出处
《玉米科学》
CAS
CSCD
北大核心
2013年第5期71-75,共5页
Journal of Maize Sciences
基金
"十二五"国家粮食丰产科技工程重大专项(2011BAD16B10)
关键词
春玉米
播期
吉林省中部
生长发育
玉米品质
Spring maize
Sowing date
Central area of Jilin province
Growth
Maize quality
