期刊论文

Effects of Controlled Release Nitrogen Fertilizers on Soil Inorganic Nitrogen Forms Nitrogen Fertilization Efficiency at Different Growth Stages of Rape

中文

水土保持学报

1009-2242

2019

33

1

158-164

10.13870/j.cnki.stbcxb.2019.01.026

国家重点研发计划项目(2018YFD0200901,2018YFD0200906) 国家油菜产业体系项目.

本校为第一机构

通过盆栽土培试验研究了尿素、控释氮肥对南方稻田冬油菜生长、产量、土壤肥效和氮肥利用效率的影响,为控释氮肥在油菜生产上的推广应用提供参考。试验选用油菜品种“湘油15”,参考油菜大田种植施氮量,共设4个处理,以不施氮肥(CK)为对照,在施氮量均为200kg/hm~2的水平下,设置了3种氮肥处理:尿素(Urea)、控释氮肥1(CRNF1)和控释氮肥2(CRNF2)。对油菜生物量和产量、不同生育期下土壤无机氮、油菜氮素吸收、油菜生理特性、土壤微生物氮以及土壤酶活性等相关指标进行测定及分析。结果表明:较常规Urea处理相比,控释氮肥处理显著提高了油菜花期、收获期生物量,增产11.2%~20.1%;CRNF1处理显著提高了油菜...

Pot experiments were carried out to study the effects of urea and controlled-release nitrogen fertilizer( CRNF)application on soil fertility and nitrogen fertilizer use efficiency(NUE)and growth of rape in Southern China,and it could provide reference for the application and dissemination of CRNF in rape production. An experiment with a randomized complete block design was conducted to investigate the effects of urea and CRNF on rape biomass and yield,soil inorganic nitrogen at different growth stages,nitrogen uptake of rape,physiological chara...