期刊论文

中文

中国土壤与肥料

1673-6257

2016

5

37-44

10.11838/sfsc.20160507

2011BAD16B01:国家科技支撑计划 2012BAD04B10－01:国家科技支撑计划 2013BAD07B11－02:国家科技支撑计划 2013NK3036:湖南省科技计划 12231:长沙市烟草公司科技项目

本校为第一机构

为给长沙烟区烟后晚稻高产高效栽培提供科学依据,以超级杂交稻品种深优9586为材料,于2011~2012年在长沙市宁乡烟区研究了施氮量与氮肥运筹方式对烟后晚稻产量形成与氮素吸收利用的影响。结果表明:(1)在施氮0~120 kg/hm~2范围内,晚稻产量随施氮量增加呈先增后降趋势,施氮90 kg/hm~2条件下产量最高,过量施氮导致减产的原因在于有效穗数与千粒重下降;(2)氮肥运筹方式影响晚稻产量,施氮90 kg/hm~2时W3处理(基蘖肥∶穗肥∶粒肥比例为0.5∶0.25∶0.25)产量最高,施氮30~60 kg/hm~2时以W4处理(0.25∶0.5∶0.25)产量最高,增产的原因在于氮肥后移提高了烟后晚稻齐穗期叶面积指数、灌浆中期叶面积指数和SPA...

To provide the scientific basis for high-yielding and efficient cultivation of late rice after tobacco in Changsha tobacco planting area,effects of nitrogen application rate and nitrogen planning mode on yield formation and nitrogen absorption and utilization of late rice after tobacco were studied with super hybrid rice variety ＂Shenyou 9586＂as material in Ningxiang tobacco planting area in 2011 ~ 2012. The results showed that（ 1） the yield of late rice after tobacco showed the increase-decrease trend with the increment of nitrogen rate in...