施氮模式和施氮量对细叶青冈幼苗生长的影响  

Effects of nitrogen application mode and mount on growth of Cyclobalanopsis gracilis seedlings

作　　者：焦雪辉 乔雨轩 秦玉文 史喜兵 JIAO Xuehui;QIAO Yuxuan;QIN Yuwen;SHI Xibing(Zhengzhou Academy of Agricultural Science and Technology,Zhengzhou 450005,China;Anyang Forestry Technology Work Center,Anyang Henan 455000,China)

机构地区：[1]郑州市农业科技研究院,郑州450005 [2]安阳市林业技术工作中心,河南安阳455000

出　　处：《东北农业大学学报》2024年第5期35-45,共11页Journal of Northeast Agricultural University

基　　金：河南省科技攻关项目(242102110181);河南省林业局科技兴林项目(YLK202311)。

摘　　要：为探讨氮肥对细叶青冈幼苗生长的影响,利用平均施氮和指数施氮两种施氮模式,研究细叶青冈幼苗生长量、生物量及生理指标对施氮量的响应,采用主成分分析和隶属函数法筛选出最佳施氮模式和施肥量。结果表明,平均施氮模式下,总施肥量为1 600 mg·株^(-1)时细叶青冈幼苗株高和生物量最大,总施肥量为1 200 mg·株^(-1)时细叶青冈幼苗地径最大;指数施氮模式下,总施肥量为400 mg·株^(-1)时细叶青冈幼苗株高、地径及生物量均最大。通过主成分和隶属函数分析,对13个处理作综合评价,最终筛选出最适合细叶青冈幼苗生长的施氮处理为平均施氮模式下总施肥量1 600 mg·株^(-1)。与指数施氮相比,平均施氮模式施肥程序简单,便于经营者掌握,更适合细叶青冈幼苗生长,建议将总施肥量1 600 mg·株^(-1)作为细叶青冈良种壮苗培育的施肥措施在生产中推广应用。In order to explore the effect of nitrogen fertilizer on the growth of young seedlings of Cyclobalanopsis gracilis,the response to nitrogen application of growth,biomass,and physiological indicators of C.gracilis seedlings was investigated with the methods of average nitrogen application and index nitrogen application.Principal component analysis and membership functions were used to screen for the optimal fertilization mode and level.The results showed that under the average fertilization mode,the maximum plant height and biomass of C.gracilis seedlings were achieved at a total fertilization amount of 1600 mg·plant^(-1),and the maximum ground diameter of C.gracilis seedlings was achieved at a total fertilization application of 1200 mg·plant^(-1).Under the index fertilization mode,when the total nitrogen application amount was 400 mg·plant^(-1),the height,diameter,and biomass of the seedlings of C.gracilis were the highest.Through principal component and membership function analyses,a comprehensive evaluation was conducted on 13 treatments.The most suitable nitrogen application treatment for the growth of C.gracilis young seedlings was ultimately selected as a total fertilization amount of 1600 mg·plant^(-1) under the average nitrogen application mode.Compared with exponential nitrogen application,the average nitrogen application mode had a simpler fertilization procedure,which was easier for operators to master and more suitable for the growth of young seedlings of C.gracilis.It was recommended to promote the application of a total fertilization amount of 1600 mg·plant^(-1) as a fertilization measure for the cultivation of high-quality and strong seedlings of C.gracilis in production.

关 键 词：细叶青冈 平均施氮 指数施氮 生长指标 生理指标 

分 类 号：S143[农业科学—肥料学] S718.5[农业科学—农业基础科学]