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