中国油料作物学报2025，Vol.47Issue(1)：143-149,7.DOI:10.19802/j.issn.1007-9084.2023272
氮肥追施量对菜油两用油菜籽产量的影响
Application effect of follow-up nitrogen fertilizer on yield of vegetable and oilseed rape
摘要
Abstract
Developing vegetable and oilseed rape is an important multifunctional utilization of this crop.To better understand the application impact of follow-up nitrogen(N)fertilizer on stalk-free and stalk-cut rapeseed field on yield and its components,field experiments were carried out in Honghu City and Wuxue City,Hubei Prov-ince in 2022-2023.Main treatment was set as stalk-free and stalk-cut,secondary treatment was fertilizers(N)as 0,22.5,45.0,67.5,90.0 and 112.5 kg/hm2.Under the conditions of(Fresh)stalk harvesting of 6217 kg/hm2 and 6613 kg/hm2 respectievely in Honghu and Wuxue sites,seed yields were average reduced by 5.0%and 24.7%,compared to stalk-free.Among them,yields from the no-and low-adopted treatments were higher than those of the medium-and high-adopted treatments.Follow-up N fertilizer application during the shoot stage significantly increased seed yield of stalk-cut,and its response degree to N application was higher than that of stalk-free.The highest yields were obtained when 40.6 kg/hm2 and 42.2 kg/hm2 of follow-up N fertilizer were applied with stalk-free and stalk-cut respectively at Honghu site,while the corresponding optimal application of follow-up N fertilizer at Wuxue were 33.4 kg/hm2 and 40.3 kg/hm2.It indicated that the N amount applied to vegetable and oilseed rape with stalk-cut was higher than that of the general.Follow-up N fertilizer increased the number of siliques on the primary meristem of stalk-free rapeseed,and the number of siliques on the secondary meristem of stalk-cut rape.Stalk-cut signifi-cantly increased the number of seeds per silique but decreased thousand seeds weight.Oil content of stalk-cut was slightly higher and the application of follow-up N fertilizer could reduce the oil content of rapeseed,and improve oil production when follow-up N fertilizer application was suitable.These results indicated that under the condition of about 6.4 t/hm2 of stalk cutting during shoot stage,no matter whether follow-up N fertilizer is applied or not will sig-nificantly reduce rapeseed yield,and the application of follow-up N fertilizer could make up for the yield loss.And the suitable amount of N fertilizer is about 40.0 kg/hm2.关键词
菜油两用/追施氮肥用量/油菜籽产量/角果数/每角粒数/千粒重Key words
vegetable and oilseed rape/follow-up nitrogen fertilizer application/rapeseed yield/silique number/seeds per silique/thousand-seeds weight分类
农业科技引用本文复制引用
孟孜贞,杨佳群,田贵生,胡兵,鲁君明,任涛,鲁剑巍..氮肥追施量对菜油两用油菜籽产量的影响[J].中国油料作物学报,2025,47(1):143-149,7.基金项目
国家重点研发计划(2021YFD1600500) （2021YFD1600500）
湖北省现代农业产业技术体系(HBHZD-ZB-2020-005) （HBHZD-ZB-2020-005）
中央高校基本科研业务费专项基金(2662021ZH001) （2662021ZH001）
