缺氮和恢复供氮对香蕉苗生长和根系形态参数的影响Effects of N deficiency and resupply of N nutrient on banana growth and root morphological parameters
刘芳;林李华;张立丹;樊小林;孙少龙;
摘要(Abstract):
【目的】探讨缺氮及恢复供氮对香蕉苗生长及其根系形态参数的影响,为香蕉苗期形态诊断和氮肥管理提供依据。【方法】通过石英砂培养试验,对比研究了缺氮程度和恢复供氮后香蕉苗表型性状、地上部和根系的干物质质量、根系形态参数等的变化。【结果】缺氮后香蕉苗呈现明显的缺氮症状;恢复供氮32 d后,香蕉苗缺氮症状消失,表型恢复正常性状。但是,缺氮程度、缺后恢复供氮对香蕉生长的影响不同,轻度缺氮不会抑制地上部生长,反而刺激根系生长,显著增加了根系干物质质量;中度缺氮时,明显抑制了香蕉苗生长,地上部干物质质量降低了19.25%,而根系干物质质量无明显变化,缺氮对根系的促生作用减弱。缺氮后,香蕉苗的总根长和直径<2 mm细根的根长明显减小,轻度、中度缺氮时,香蕉苗的总根长分别为正常处理的58.3%和49.7%。但是,缺氮明显增加了香蕉苗平均根直径、总体积和直径>2 mm的根系体积,轻度、中度缺氮期,香蕉苗的平均直径和总体积分别为正常处理的1.85倍和2.01倍、1.62倍和1.31倍。缺氮香蕉苗恢复供氮32 d后,缺氮表型性状完全消失,地上部和整株干物质质量分别增加了6.08%和5.24%;根系趋向正常生长,总根长特别是细根长度显著增加,平均根直径和总体积显著降低,但是,复氮处理的香蕉苗的干物质质量、根系长度、平均根直径和总体积仍达不到正常处理香蕉苗的水平。【结论】香蕉缺氮的表型性状能及时反映香蕉的氮素营养状况,缺氮对香蕉表型性状的影响通过及时补充氮肥可在短期恢复,但干物质质量、根系生长的恢复期滞后于表型性状恢复期。在香蕉栽培过程,香蕉苗期要综合考虑土壤肥力和营养特性合理施肥,避免先缺再补的施肥措施。
关键词(KeyWords): 香蕉苗;缺氮;复氮;干物质质量;根系形态
基金项目(Foundation): 国家重点研发计划(2017YFD0200701);; 省级重大科研项目(2016KZDXM029);; 国家现代农业产业技术体系建设专项-(CARS-31-06)
作者(Author): 刘芳;林李华;张立丹;樊小林;孙少龙;
Email:
DOI: 10.13925/j.cnki.gsxb.20180168
参考文献(References):
- [1]樊小林.香蕉营养与施肥[M].北京:中国农业出版社,2007:58-79.FAN Xiaolin.Banana nutrition and fertilization[M].Beijing:China Agricultural Press,2007:58-79.
- [2]赵艳,张晓波,阮云泽,王雅楠.海南省不同地区连作年限对香蕉园土壤养分及线虫数量的影响[J].江苏农业科学,2015,43(4):315-317.ZHAO Yan,ZHANG Xiaobo,RUAN Yunze,WANG Yanan.Effects of continuous cropping on soil nutrients and nematodes in banana gardens in different areas of Hainan province[J].Jiangsu Agricultural Sciences,2015,43(4):315-317.
- [3]廖志气,林电,郑丽燕,程宁宁,朱治强.海南岛香蕉园土壤肥力现状及变化趋势分析[J].安全与环境学报,2006,6(1):107-111.LIAO Zhiqi,LIN Dian,ZHENG Liyan,CHENG Ningning,ZHU Zhiqiang.Study on present situation of soil fertility in banana gardens of Hainan and its changing tendency[J].Journal of Safety and Environment,2006,6(1):107-111.
- [4]林电,郑丽燕,廖志气,朱治强.海南香蕉园土壤肥力研究[J].中国土壤与肥料,2007(2):26-29.LIN Dian,ZHENG Liyan,LIAO Zhiqi,ZHU Zhiqiang.Soil fertility in banana plantation in Hainan province[J].Soils and Fertilizers Sciences in China,2007(2):26-29.
- [5]魏守兴,黄丽娜,谢子四,李志阳,林敏霞,罗石荣,陈业渊.漳州主要长期蕉园土壤肥力分析与施肥建议[J].热带作物学报,2013,34(12):2336-2341.WEI Shouxing,HUANG Lina,XIE Zisi,LI Zhiyang,LIN Minxia,LUO Shirong,CHEN Yeyuan.Analysis for soil fertility and recommendations for fertilization of main aged banana gardens in Zhangzhou[J].Chinese Journal of Tropical Crops,2013,34(12):2336-2341.
- [6]魏守兴,谢子四,李志阳,谢建吉,罗石荣,陈业渊.广西主要蕉园土壤肥力调查及评价[J].热带作物学报,2012,33(8):1371-1377.WEI Shouxing,XIE Zisi,LI Zhiyang,XIE Jianji,LUO Shirong,CHEN Yeyuan.Soil fertility investigation and evaluation for Banana gardens in Guangxi[J].Chinese Journal of Tropical Crops,2012,33(8):1371-1377.
- [7]陈鸿洁,王树明.河口平地蕉园土壤肥力状况分析[J].热带农业科技,2006,29(4):30-32.CHEN Hongjie,WANG Shuming.Soil fertility analysis of flat banana plantation in Hekou[J].Tropical Agricultural Science&Technology,2006,29(4):30-32.
- [8]杨苞梅,姚丽贤,李国良,何兆桓,周修冲,周昌敏,涂仕华.广东省香蕉主产区蕉园土壤养分的吸附特性研究[J].土壤通报,2008,39(6):1315-1320.YANG Baomei,YAO Lixian,LI Guoliang,HE Zhaohuan,ZHOU Xiuchong,ZHOU Changmin,TU Shihua.Evaluation on characteristics of nutrient absorption of soils in banana plantation in Guangdong province[J].Chinese Journal of Soil Science,2008,39(6):1315-1320.
- [9]李丰年,曾惜冰,黄秉智.香蕉栽培技术[M].广州:广东科学技术出版社,1999:83.LI Fengnian,ZENG Xibing,HUANG Bingzhi.Banana cultivation techniques[M].Guangzhou:Guangdong Science and Technology Press,1999:83.
- [10]李瑞民,杨苞梅,梁华赐,臧汝平,庄德奥,姚丽贤.氮磷钾缺素对香蕉生长、抽蕾及产量的影响[J].广东农业科学,2011,38(4):72-73.LI Ruimin,YANG Baomei,LIANG Huaci,ZANG Ruping,ZHUANG De’ao,YAO Lixian.Effects of nitrogen,phosphorus and potassium deficiency on banana growth,bud buds and yield[J].Guangdong Agricultural Sciences,2011,38(4):72-73.
- [11]FREITAS A S,POZZA E A,POZZA A A A,OLIVEIRA M G F,SILVA H R,ROCHA H S,GALVAO L R.Impact of nutritional deficiency on Yellow Sigatoka of banana[J].Australasian Plant Pathology,2015,44(5):583-590.
- [12]SILVA E D B,DE SOUZA B P,RODRIGUES DONATO S L,AMORIM E P,DE CARVALHO F P,ALMEIDA M D O.Deficiencies of macronutrients on nutritional status of prata type bananas seedlings[J].Bioscience Journal,2014,30(1):82-92.
- [13]陈海斌.香蕉氮磷钾钙镁硫胁迫下的营养特性与营养诊断研究[D].广州:华南农业大学,2017.CHEN Haibin.Study on banana nutrition characteristics under N,P,K,Ca,Mg,S deficiency and banana nutrition diagnosis[D].Guangzhou:South China Agricultural University,2017.
- [14]陈静,刘连涛,孙红春,张永江,王占彪,李存东.外源NO对缺氮胁迫下棉花幼苗形态及生长的调控效应[J].中国农业科学,2014,47(23):4595-4605.CHEN Jing,LIU Liantao,SUN Hongchun,ZHANG Yongjiang,WANG Zhanbiao,LI Cundong.Regulatory effects of exogenous nitric oxide on morphology of cotton seedlings under nitrogen stress[J].Scientia Agricultura Sinica,2014,47(23):4595-4605.
- [15]LIZARAZO Má,HERNáNDEZ C A,FISCHER G,GóMEZM L.Response of the banana passion fruit(Passiflora tripartita var.mollissima)to different levels of nitrogen,potassium and magnesium[J].Agronomía Colombiana,2013,31(2):184-194.
- [16]FURCAL-BERIGUETE P,BARQUERO-BADILLA A.Fertilización del plátano con nitrógeno y potasio durante el primer ciclo productivo[J].Agronomía Mesoamericana.2014,25(2):267-278.
- [17]习金根,韦艳明,张小玲,郑金龙,谭施北,易克贤.缺乏不同营养元素对剑麻幼苗生长和养分含量的影响[J].热带作物学报,2013,34(3):403-407.XI Jingen,WEI Yanming,ZHANG Xiaoling,ZHENG Jinlong,TAN Shibei,YI Kexian.Effects of nutrient stress on growth and nutrition concentration of sisal seedling[J].Chinese Journal of Tropical Crops,2013,34(3):403-407.
- [18]何亮珍,蒋元利.缺氮对叶用甘薯生长及生理的影响[J].湖南农业科学,2017(3):20-22.HE Liangzhen,JIANG Yuanli.Effects of nitrogen deficiency on the growth and physiology of leaf-vegetable sweet potato[J].Hunan Agricultural Sciences,2017(3):20-22.
- [19]施晟璐,叶冰竹,张润枝,聂鹏卿,唐晓清,王康才.缺氮和复氮对菘蓝幼苗生长及氮代谢的影响[J].西北植物学报,2015,35(3):523-529.SHI Shenglu,YE Bingzhu,ZHANG Ruizhi,NIE Pengqing,TANG Xiaoqing,WANG Kangcai.Effect of N deficiency and Nrecovery on growth and nitrogen metabolism of Isatis indigotica seedings[J].Acta Botanica Boreali-Occidentalia Sinica,2015,35(3):523-529.
- [20]武永军,沈玉芳,颜秦峰,曹让,梁宗锁.缺氮复氮处理对玉米根系生长、根系活力、硝态氮及氨基酸含量的影响[J].西北农业学报,2012,21(12):61-64.WU Yongjun,SHEN Yufang,YAN Qinfeng,CAO Rang,LIANG Zongsuo.Effect of N deficiency and N recovery treatment on root growth,root activity,content of NO3--N and amino acid[J].Acta Agriculturea Boreali-occidentalis Sinica,2012,21(12):61-64.
- [21]乔海涛,杨洪强,申为宝,姜倩倩,由淑贞,张龙,冉昆,张鑫荣.缺氮和缺铁对平邑甜茶幼苗根系构型的影响[J].园艺学报,2009,36(3):321-326.QIAO Haitao,YANG Hongqiang,SHEN Weibao,JIANG Qianqian,YOU Shuzhen,ZHANG Long,RAN Kun,ZHANG Xinrong.Effect of nitrogen-deficient and iron-deficient on root architecture of young seedlings of Malus hupehensis(Pamp)Rehd.[J].Acta Horticulturae Sinica,2009,36(3):321-326.
- [22]BESSA L A,SILVA F G,MOREIRA M A,RIBEIRO TE-ODORO J P,LOUREIRO SOARES F A.Characterization of the effects of macronutrient deficiencies in mangabeira seedlings[J].Revista Brasileira de Fruticultura.2012,34(4):1235-1244.
- [23]曾秀成,王文明,罗敏娜,廖红,王秀荣.缺素培养对大豆营养生长和根系形态的影响[J].植物营养与肥料学报,2010,16(4):1032-1036.ZENG Xiucheng,WANG Wenming,LUO Minna,LIAO Hong,WANG Xiurong.Effects of different element deficiencies on soybean growth and root morphology[J].Plant Nutrition and Fertilizer Science,2010,16(4):1032-1036.