稻田春秋玉米产量形成特点比较研究  

The Comparative Study of Yield Formation Characteristics in Spring and Autumn Corn of Paddy Field

作　　者：雷恩[1] 李迪秦[1] 郑华斌[1] 陈立军[1] 唐启源[1] 

机构地区：[1]湖南农业大学农学院,长沙410128

出　　处：《世界科技研究与发展》2009年第4期689-691,698,共4页World Sci-Tech R&D

基　　金：国家科技支撑计划共性项目;编号2006BAD02A13-3-4;长沙市科技局k0803115-21

摘　　要：以半紧凑型迟熟玉米杂交种"登海11"为材料,2007年在长沙和永安两点分别做了稻田春玉米和稻田秋玉米不同施氮水平和密度二因子处理试验。试验结果表明:稻田春、秋玉米均随密度和施氮量的增加产量增加,但中高密度下产量差异不显著,三个氮肥处理下的产量差异均不显著。春玉米主要通过增加穗数和粒重来增加产量,而秋玉米主要通过增加穗数来增加产量;秋玉米营养期生长天数少于春玉米,使得秋玉米总生物产量和最大叶面积指数较低,从而造成秋玉米平均产量低于春玉米。Serotinous variety “Deng Hai 11” was used as an experimental material in the nitrogen supply and plant density experiment, and it was planted as spring corn and autumn corn in Changsha and Yong an of Hunan province. The result showed that the yield of spring and au- tumn corn is increased by increasing corn density and nitrogen applied, but the discrepancy of yield under middle and high density is not remarkable, and the discrepancy of yield under nitrogen applied is not remarkable for spring and autumn corn. Spring corn increased yield by heavy ears and multiple grain, but the autumn corn by increasing ears, the nourishing process of autumn corn is less than that of spring corn, so all dry matter and max-LAl are little for autumn corn, which is main reason that the yield of spring corn is higher morn than autumn corn.

关 键 词：稻田 春秋玉米 产量形成 

分 类 号：S513[农业科学—作物学] S344.17