烟后晚稻产量形成特性与施氮效应研究  

Nitrogen Application Effect and Yield Formation Characteristics of Late Rice after Tobacco Planting

作　　者：易镇邪[1] 傅莉斌[1] 刘剑[2] 陈平平[1] 周文新[1] 屠乃美[1] 

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]华容县农业局植保站,湖南岳阳414200

出　　处：《湖南农业科学》2011年第11期13-15,18,共4页Hunan Agricultural Sciences

基　　金：国家"十五"粮食丰产科技工程项目(2004BA520A01);湖南农业大学引进人才基金项目(06YJ29)

摘　　要：烟-稻复种是湖南省一种重要的种植制度，为探讨烟后晚稻产量形成特性及其施氮效应，在长沙进行了大田试验。结果表明：供试3个组合生育期差异较大，其中丰源优299全生育期约130d，9月15日前后齐穗，c两优4488与威优46全生育期较丰源优299长5～7d，齐穗期迟6-9d；3组合产量差异显著，施氮与不施氮条件下均表现丰源优299〉C两优4488〉威优46；施氮效应显著，3组合均因施氮而显著增产，增产幅度表现C两优4488〉丰源优299〉威优46；施氮使各组合全生育期延长2d，茎蘖数增加且成穗率提高，有效穗数、穗粒数、叶面积与单穴干物质积累均显著增大。在本试验条件下，综合考虑生育期与产量水平等因素，丰源优299最适合作烟后晚稻栽培。Tobacco-rice rotation is an important cropping system in Hunan Province. Field Experiment was conducted to explore the nitrogen application effect and yield formation chara experimental combinations had huge difference in growth period, in whichthe whole duration of Fengyuanyou 299 was about 130 d, and its fully heading stage was around on 15th Sept., while whole duration of C Liangyou 4488 and Weiyou 46 was 5~7 d longer and their fully heading stage was6~9 d later than those of Fengyuanyou 299, respectively. The three combinations also had significant difference in yield, and it showed a trend of Fengyuanyou 299〉C Liangyou 4488〉Weiyou 46 whether under nitrogen application condition or non-nitrogen application condition. Effect of nitrogen application was significant, the yield of three combinations was significantly increased with nitrogen application, and the increasing extent showed a trend of C Liangyou 4488 〉Fengyuanyou 299 〉Weiyou 46. After nitrogen application, whole duration of the three combinations was prolonged 2 d, number of tillers and ear bearing rate were enhanced, and effective panicles, grain number per panicle, leaf area and dry matter accumulation per hill were also significantly increased. In this study, comprehensively considered growth duration and yield, Fengyuanyou 299 was the optimal variety for cultivation of late rice in Changsha region after tobacco planting.

关 键 词：烟-稻复种 晚稻 产量形成 施氮效应 

分 类 号：S572[农业科学—烟草工业]