前氮后移对春大豆农艺性状及产量的影响  

Effects of Different Application N-fertilizer on Agronomic Characters of Spring Soybean

作　　者：邢永锋[1] 章建新[1] 李金霞[1] 马英晟[1] 沈融[1] 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2008年第6期31-34,共4页Journal of Xinjiang Agricultural University

基　　金：国家自然科学基金(30660081);新疆科技厅科技攻关项目(200631104)

摘　　要：为研究不同生育期追肥比率对春播大豆农艺性状的影响。以中熟大豆品种吉育47为材料,设计了150 kg/hm2纯氮于初花期、始荚期4种氮肥追施水平,结果表明:随着氮肥后移量的增加,中上部各节间、中上部各节叶面积、中上部各节叶柄长度、叶面指数及茎粗呈减小趋势,中上部叶柄与主茎夹角增加,单株荚数、单株粒数、单株产量及总产量均呈现先增加后降低趋势,顶部节间、顶端叶面积、顶端叶柄长度及百粒重没有明显改变,以初花期施氮105 kg/hm2,始荚期施氮45 kg/hm2的处理总产量最高。This experiment was carried out to design 4 kinds of top-application of N-fertilizer （150 kg/hm2） by the use of Jiyu 47 as material to study the effects of different growth period of agronomic characters of spring soybean. The result showed that with the nitrogen fertilizer increase, mid-upper internodes, mid-upper internode leaf area, mid-upper length of leaf stalk,leaf area index and stem diameter were redused,the included angle between mid-upper leaf stalk and main stem was increased,the pod number per plant, seed number per plant, yield per plant and the total yield were firstly increased, then decreased. There was no significant change in the top internode,the leaf area, the top length of leaf stalk, the weight of 100 seeds. The total yield was the highest when the spring soybean was treated with N-fertilizer of 45 kg/hm2 at initial podding stage.

关 键 词：大豆 氮肥 农艺性状 产量 

分 类 号：S565.1[农业科学—作物学]