摘要
通过盆栽试验,设置3个施氮水平,以不施氮肥为CK,在不同生长时期,测定蚕豆干物质累积、根长,计算养分利用效率。结果表明:与花期和结荚期相比,收获期蚕豆干物质分别增加180%~480%。花期和结荚期,与T_(1)相比,T_(2)和T_(3)施肥量蚕豆根长增加了30.64%、24.19%;21.32%、27.88%,T_(2)和T_(3)之间差异不显著。收获期,与CK相比3个施氮水平下,蚕豆养分阶段累积量分别增加33.01%~74.85%,T_(1)和T_(2)之间差异不显著。与幼苗期相比,3个氮水平下,蚕豆收获期养分吸收效率分别减少48.61%~63.54%。同一生育期内,与CK相比T_(3)氮肥利用效率分别增加4.76%~20.74%,CK与T_(1)、T_(2)之间差异不显著。随施氮量增加,蚕豆氮肥偏生产力、氮肥利用效率增加,蚕豆收获指数相差不明显。总之,施氮量影响蚕豆生长和养分利用,但并不影响收获指数,过量施氮对蚕豆养分吸收利用也无明显促进作用。
In this study,3 nitrogen application levels were set in pot experiment,and no nitrogen fertilizer was used as control(CK).Dry matter accumulation,root length were detected and nutrient utilization efficiency were measured at different growth stages.The results showed that the dry weight of Vicia faba at harvest stage increased by 180%–480%compared with that at flowering stage and pod stage,respectively.Compared with T_1,the root length of T_(2) and T_(3) were increased by 30.64%and 24.19%at flowering and were increased by 21.32%,27.88%at pod stage,no significant difference between T_(2) and T_(3).At the harvest stage of V.faba,compared with CK,the nitrogen application rate of T_(1),T_(2) and T_(3) were increased by 33.01%–74.85%,respectively;however,there was no significant difference between T_(1) and T_(2).Compared with seedling stage,nutrient absorption efficiency of V.faba at harvest stage was reduced by 48.61%–63.54%at 3 nitrogen levels,respectively.In the same growth period,compared with the control group,N use efficiency of T_(3) increased by 4.76%–20.74%,respectively;however,there was no significant difference between CK and T_(1),T_(2).With the increase of nitrogen application rate,N use efficiency was increased,and there was no significant difference in harvest index of V.faba.In conclusion,nitrogen application rate affected the growth and nutrient utilization of V.faba,but did not affect the harvest index,and excessive nitrogen application did not promote the nutrient absorption and utilization of V.faba.
作者
王立浩
李城佰
万山平
刘英超
张小卓
黄敏
戴利利
Wang Lihao;Li Chengbai;Wan Shanping;Liu Yingchao;Zhang Xiaozhuo;Huang Min;Dai Lili(College of Agronomy and Life Sciences,Kunming University,Kunming Yunnan 650214,China;College of Resources and Environment,Yunnan Agricultural University,Kunming Yunnan 650201,China;Kunming Nongjiale Compound Fertilizer Co.Ltd.,Kunming Yunnan 650200,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2024年第1期208-213,共6页
Journal of Southwest Forestry University：Natural Sciences
基金
云南省地方本科高校基础研究联合专项项目(202101BA070001-235)资助
昆明学院人才引进科研启动项目(YJL2005)资助。
关键词
蚕豆
氮肥
干质量
根系
养分
Vicia faba
nitrogen fertilizer
dry weight
root
nutrient
