摘要
为了探明水稻超高产栽培产量对不同分蘖苗移栽和氮肥运筹的响应,以超级稻准两优527为材料,采用田间裂区试验研究了不同分蘖苗移栽和氮肥运筹对产量的影响。结果表明:在中等肥力田按1.11万穴/667m2密度栽插4蘖秧苗、分蘖期施N量为总N量的5%(总N量为13.8kg/667m2)时,其生长高峰期的基本苗为28.6万穗/667m2,有效穗19.38万穗/667m2,成穗率67.7%,叶面积指数在抽穗期最大,产量也最高,为853.3kg/667m2。
Taking super rice Zhunliangyou 527 as the material, the effects of transplantation of tillering seedlings and nitrogen management were studied by a split plot experiment in the field to explore the response of rice yield to different transplantation of tillering seedlings and nitrogen management. Results： In the field with medium fertility, with the density of 11.1 thousand seedlings per 667 m2 , and 5% N fertilizer application amount of the total in tillering stage（total N application amount was 13.8 kg/ 667m2）, the basic seedling number in fast-growing stage, number of effective spikes and percentage of earbearing tiller were 286 thousand spikes/667m2 , 193.8 thousand spikes/667m2 and 67.7% respectively. The leaf area index reached the maximum in heading period, so did the yield（853.3 kg/667m2）.
出处
《贵州农业科学》
CAS
北大核心
2013年第3期19-22,共4页
Guizhou Agricultural Sciences
基金
贵州省科技重大专项计划项目"贵州粮食(水稻
玉米)高产科技‘双百’示范工程"[黔科合重大专字(2011)6012]
贵州省农业攻关项目"不同类型杂交稻超高产生理特性研究"[黔科合N字(2009)3014]
黔东南冷凉山区水稻超高产应用研究与示范[黔省专合字(2010)105]
关键词
杂交水稻
超高产栽培
基本苗
氮肥施用量
hybrid rice
super high-yield cultivation
basic seedlings
application i-evel of nitrogen fer-tilizer
