高氮肥对寒地水稻产量和群体形态的影响  

Effect of High-nitrogen Fertilizer on Yield and Group Morphology of Rice in Cold Region

作　　者：潘博[1,2] 赵海新[3] 夏天舒[4] 黄晓群[3] 张献国[3] 张永飞 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]黑龙江省农业科学院农产品质量安全研究所,黑龙江哈尔滨150086 [3]黑龙江省农业科学院佳木斯水稻研究所,黑龙江佳木斯154026 [4]黑龙江省农业科学院耕作栽培研究所,黑龙江哈尔滨150086 [5]内蒙古鄂尔多斯市达拉特旗统计局,内蒙古鄂尔多斯014300

出　　处：《黑龙江农业科学》2012年第2期35-37,共3页Heilongjiang Agricultural Sciences

基　　金："十一五"国家科技支撑计划资助项目(2007BAD65B01-4);黑龙江省科技厅资助项目(GB06B104-1-5);黑龙江省科技攻关计划资助项目(GA09B102-3)

摘　　要：为给寒地水稻的生产提供技术方案,通过不同高氮肥水平试验,研究了寒地水稻在产量及群体形态上的变化。结果表明:尿素施用量为362.5kg.hm-2时,龙粳18和龙粳20产量达到了最大值(11 407.41和9 710.24kg.hm-2),尿素施用量400kg.hm-2时龙粳14产量达到9 246.19kg.hm-2,并且各个处理小区增产效果明显;增施氮肥对穗长和剑叶的长度无显著影响,随着施氮量的增加,平均穗粒数具有显著增加趋势,而在最高的氮肥应用量上结实率显著降低。The changes of yield and group morphology were researched through experiments of different high-nitrogen fertilizer to provide technical solution for the high-yielding rice production in cold region.The results showed that urea fertilizer was 362.5 kg·hm-2,the yields of Longjing 18 and Longjing 20 reached maximum yields（11 407.41 and 9 710.24 kg·hm-2）.Urea fertilizer was 400 kg·hm-2,the yield of Longjing 14 was 9 246.19 kg·hm-2,and the effect of increasing yield was obvious in each treatment area.Increasing N fertilizer wasn＇t significant impact on panicle length and flag leaf length.Average grain number per panicle had a significant increasing trend as increasing N application,while seed setting rate significant decreased on the highest amount of N fertilizer application.

关 键 词：高氮肥 产量 群体形态 

分 类 号：S511[农业科学—作物学]