不同施肥水平对杂交稻特优165物质生产及产量的影响  

Effects of Fertilizer Management on Dry Matter Production and Yield of Hybrid Rice Teyou 165

作　　者：周萌[1] 陈雷[1] 陈仁天[1] 邓国富[1] 梁天锋[1] 周维永[1] 陈韦韦[1] 

机构地区：[1]广西农业科学院水稻研究所,广西南宁530007

出　　处：《作物杂志》2014年第5期85-88,共4页Crops

基　　金：广西自然科学基金项目(2010GXNSFA013085);农业科技成果转化资金项目(桂科转1123013-25);粮食安全关键技术研究与应用示范(桂科攻1123001-4H);广西青年基金(桂科青0991054);广西科学研究与技术开发项目(桂科攻1123001-4F)

摘　　要：以杂交水稻特优165为材料,研究6个不同施肥水平对其茎蘖动态变化、干物质生产、产量及产量构成的影响。结果表明,特优165最大茎蘖数随施肥水平的提高而增加,有效分蘖数在F4施肥水平达到最高;施肥水平越高,特优165干物质量越大,茎叶转运率有下降趋势,而抽穗后干物质积累量占产量比重呈增加趋势;特优165的产量随施肥水平的提高呈先增后减的趋势,在中高施肥水平(F4:N 225、P 562.5、K 412.5kg/hm2)达到最高产量,为9 491.7kg/hm2;每穗粒数和单位面积有效穗数是影响特优165产量的主要构成因子。特优165属于耐肥品种,增施肥料是其获得高产的有效措施。Hybrid rice Teyou 165 was used to study the effects of six fertilizer managements on tiller dynamic,dry matter（DM） production and yield of rice. The results showed that the maximum tiller number of Teyou 165 sown in early season increased with fertilizer rate,but it achieved the maximum effective tiller number at F4 treatment. The DM weight and percentage of DM increased after heading with increasing fertilizer application,but the translocation efficiency of stem and leaves was opposite with the increase of fertilizer. The grain yield Teyou 165 first increased and then decreased with the highest yield of 9 491. 7kg /hm^2 at F4（ N 225 kg /hm^2,P 562.5kg/hm^2,K 412.5kg/hm^2） treatment. The grain yield increments were achieved mainly through increasing spikes per panicle and the number of effective panicles. As a fertilizer tolerance variety,rational fertilization was important for Teyou 165 to achieve high yield.

关 键 词：特优165 施肥水平 物质生产 产量 

分 类 号：S511[农业科学—作物学]