期刊论文

Effect of Topdressing Different Nitrogen Fertilizers on the Growth, Physiology and Yield of Rapeseed (Brassica napus L.)

中文

云南农业大学学报(自然科学)

1004-390X

2020

35

5

878-884

10.12101/j.issn.1004-390X(n).201912042

国家油菜产业技术体系（CARS-13）； 国家科技支撑计划（2014BAD11B03）； 贵中医博士启动经费（[2020]29号）；

本校为其他机构

【目的】研究旱地土壤中追施不同形态氮肥对油菜生长、生理与产量的影响,旨在为旱地土壤中油菜栽培氮肥合理施用提供理论依据。【方法】以油菜品种湘油15为供试材料,在相同追施氮肥总量条件下(N 300 kg/hm~2),设3个处理:单施硝态氮(NO_3~-)(A)、硝铵态氮1: 1配施(B)和单施铵态氮(NH_4~+)(C)。分别对油菜的农艺性状、籽粒产量、含油量和花期、收获期地上部分不同器官的生物量、氮累积量以及苗期、花期叶片的光合作用参数、硝酸还原酶活性进行了测定。【结果】与A处理相比,C处理显著增加了油菜的单株有效角果数和籽粒产量(P

[Purpose] A reasonable application of nitrogen (N) fertilizer plays an important role in improving rapeseed cultivation and promoting oilseed yield. Therefore, the application effect of top-dressing different N forms in dryland soil on the growth, physiology and yield of rapeseed were investigated. [Methods ] One cultivar rapeseed Xiangyou 15 was cultured in dryland soil under top-dressing the same N rate and three treatments were set up, including single application of nitrate N (NO_3~-) (A), 1: 1 application of nitrate and ammonium N (B) and single application of ammonium N (NH_4~+) (C). The...