种植密度和氮肥水平对小麦新品种‘津强7号’产量及农艺性状的影响  

New Wheat Variety ’Jinqiang 7’:Effect of Planting Densities and Nitrogen Fertilizer Levels on Yield and Agronomic Characters

作　　者：王建贺 刘丹[1] 王从磊[1] 时晓伟[1] 石斯发[1] 冯刚[1] 梁丹[1] Wang Jianhe;Liu Dan;Wang Conglei;Shi Xiaowei;Shi Sifa;Feng Gang;Liang Dan(Tianjin Crop Research Institute,Tianjin 300384)

机构地区：[1]天津市农作物研究所

出　　处：《中国农学通报》2019年第21期14-18,共5页Chinese Agricultural Science Bulletin

基　　金：天津市农业科技成果转化与推广项目“优质强筋春小麦新品种津强7号种子繁育与示范”(201602070);天津市科技计划项目“基于新型抗小麦白粉病基因Pm21的分子标记转育及抗病新品种选育”(16ZXZYNC00140);天津市一二三产业融合“强筋春小麦津强8号良种繁育与示范及产业融合”(17ZXYENC00040)

摘　　要：为在推广过程中,更好的发挥春小麦‘津强7号’的优质、强筋、高产特性,为优质、强筋小麦生产提供技术支撑,通过对拔节期和抽穗期不同的氮肥配比,对小麦‘津强7号’的株高、穗长、小穗数、穗粒数、千粒重、穗数、产量进行测定,从而明确小麦‘津强7号’的最佳栽培模式。研究结果表明,‘津强7号’的产量、穗长、小穗数均比较稳定,在不同密度和氮肥施用方式上未出现显著变化;其株高、穗数受到了种植密度的影响,而千粒重、穗粒数受到了种植密度和氮肥使用方式的影响。低密度下千粒重和穗粒数显著增加,拔节期施用氮肥75kg/hm^2,抽穗期施用150kg/hm^2,植株较矮。450万苗/hm^2的种植密度、拔节期一次性施氮肥150kg/hm^2,是‘津强7号’最佳栽培模式。The aims are to popularizing the spring wheat variety‘Jinqiang 7’with high quality,strong gluten and high yield,and to provide technical support for the production of high-quality and strong-gluten wheat.The height,spike length,spikelet number,grain number per spike,1000-seed weight,spike number and yield were detected under different N fertilizer proportions at jointing stage and heading stage.And then the optimum planting model of‘Jinqiang 7’was obtained.The results showed that the yield,the spike length and the spikelet number of‘Jinqiang 7’were relatively stable,and there was no significant change with different densities and N fertilizer applications.The plant height and spike number of‘Jinqiang 7’was affected by planting densities,while 1000-grain weight and grain number per spike were affected by both planting densities and N fertilizer application mode.1000-grain weight and grain number per spike increased significantly under low planting density.Under N fertilizer of 75 kg/hm 2 at jointing stage,and 150 kg/hm 2 at heading stage,the height of‘Jinqiang 7’was lower than that in other treatments.The planting density of 4.5 million seedlings/hm 2 and N fertilizer of 150 kg/hm 2 applied once at the jointing stage is the best cultivation model of‘Jinqiang 7’.

关 键 词：津强7号 氮肥 种植密度 栽培模式 

分 类 号：S318[农业科学—作物栽培与耕作技术]