基于偏最小二乘回归的假植期烤烟幼苗生长的水氮耦合效应研究

doi:10.7668/hbnxb.2015.S1.079

摘要/Abstract

摘要： 合理的水氮管理是影响假植期烤烟幼苗壮苗指数的重要因子,为研究烤烟幼苗假植期的水氮配比,通过模拟不同土壤相对含水率和施氮量2个因素耦合对烤烟幼苗生长的影响,并利用偏最小二乘回归方法拟合出了烤烟幼苗假植期的水氮耦合比例.结果表明,土壤相对含水率和施氮量均对烤烟幼苗的生长有明显的影响,整体表现为随着土壤相对含水率的增加烤烟幼苗的生长参数除地下部生物量外均呈先增加后降低趋势,而其生长参数随着施氮量的增加各参数的变化规律并不一致.土壤相对含水率和施氮量2个单因素除对烤烟幼苗地下部生长量影响不显著外,对其他生长参数均具达显著或极显著的影响,但水氮耦合效应对各参数的影响仅对地下部鲜质量和地下部生物量影响显著,对其他生长参数的影响较小.利用偏最小二乘回归方法拟合烤烟幼苗各生长参数对土壤相对含水率和施氮量的二次多项式方程可以发现,仅地下部生物量拟合系数R²较低,其他各生长参数拟合系数均较高,方程中施氮量(X₂)的系数明显高于土壤相对含水率(X₁),即施氮量对烤烟幼苗生长的正效应大于土壤相对含水率.对拟合方程综合分析得出本试验条件下假植期烤烟幼苗生长状况最佳土壤相对含水率为58.46%,在培养基质碱解氮为0.34 g/kg时的最佳施氮量为1.53 g/kg.

关键词: 烤烟幼苗, 生长, 水氮耦合, 偏最小二乘回归模型

Abstract: Reasonable water and nitrogen management is a pivotal factor affecting the sound seedling index of the flu-cured tobacco seedlings at provisional planting stage.In order to study the ratio of water and nitrogen for the flu-cured tobacco seedlings at provisional planting stage,this article studied the coupling effect of relative moisture content and nitrogen application amount on the growth of flu-cured tobacco seedlings and got the coupling ratio of water and nitrogen of the flu-cured tobacco seedlings at provisional planting stage using partial least squares regression method.Results showed that both of the relative moisture content and nitrogen application amount significantly affected the growth of flu-cured tobacco seedlings.Specifically,all of the growth factors except of ground biomass showed a tendency of first increased and then decreased along with the rising relative water content of soil.Whereas,the changing patterns of growth factors were not consistent with the rising nitrogen application amount.The two single factors relative water content of soil and nitrogen application amount had dramatic influence on all of growth factors excepted for ground biomass.Whereas,the coupling effect of water and nitrogen had significantly influenced rather on underground fresh weight and ground biomass than other growth factors.The quadratic polynomial equation obtained by matching growth factors of flu-cured tobacco seedlings with relative water content of soil and nitrogen application amount using partial least squares regression method indicated that only the fitting coefficient R² of ground biomass was poor,but other growth factors were high.The coefficient of nitrogen application amount(X₂) in the equation was distinctly higher than that of relative water content of soil(X₁),namely the positive effect of nitrogen application amount on the growth of flu-cured tobacco seedlings was greater than that of relative water content of soil.The optic relative water content of soil was 58.46% and which corresponded to the best growth status of flu-cured tobacco seedlings at provisional planting stage was determined by using the obtained quadratic polynomial equation at the conditions of this study.Well,the optic nitrogen application amount was 1.53 g/kg with an alkali-hydrolyzable nitrogen of culture medium at 0.34 g/kg.

Key words: Flu-cured tobacco seedlings, Growth, Coupling effect of water and nitrogen, Partial least squares regression

中图分类号:

S147.21

贺国强, 徐永军, 齐虹凌, 朱富国, 李慧, 秦玉宝, 元野. 基于偏最小二乘回归的假植期烤烟幼苗生长的水氮耦合效应研究[J]. 华北农学报, 2015, 30(S1): 435-440. doi: 10.7668/hbnxb.2015.S1.079.

HE Guo-qiang, XU Yong-jun, QI Hong-ling, ZHU Fu-guo, LI Hui, QIN Yu-bao, YUAN Ye. The Study on the Coupling Effect of Water and Nitrogen on the Flu-cured Tobacco Seedlings at Provisional Planting Stage Based on Partial Least Squares Regression[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(S1): 435-440. doi: 10.7668/hbnxb.2015.S1.079.

http://www.hbnxb.net/CN/Y2015/V30/IS1/435

参考文献

[1] 孙永健,孙园园,李旭毅,等.水氮互作对水稻氮磷钾吸收、转运及分配的影响[J].作物学报,2010,36(4):655-664.
[2] Zabek L M.Nutrition and fertilization response:a case study using hybrid poplar[D].PhD thesis.vancouver,Canada:The University of British Columbia,2001.
[3] 张会慧,张秀丽,许楠,等.外源钙对干旱胁迫下烤烟幼苗光系统Ⅱ功能的影响[J].应用生态学报,2011,22(5):1195-1200.
[4] 柴仲平,王雪梅,孙霞,等.基于灰枣产量和品质的水氮耦合效应研究[J].水土保持研究,2011,18(5):263-266.
[5] 郎莹,张光灿,张征坤,等.不同土壤水分下山杏光合作用光响应过程及其模拟[J].生态学报,2011,31(16):4499-4508.
[6] 徐博超,周志强,李威,等.东北红豆杉幼苗对不同水分条件的光合和生理响应[J].北京林业大学学报,2012,34(4):73-78.
[7] 金微微,王炎,张会慧,等.氮肥对干旱胁迫下烤烟幼苗光合PSⅡ功能的影响[J].南京农业大学学报,2012,35(4):21-26.
[8] 逄好胜,张会慧,敖红,等.硝态氮对Na₂CO₃胁迫下桑树幼苗生长和光合特性的影响[J].草业科学,2014,31(8):1515-1522.
[9] 王绍华,曹卫星,丁艳锋,等.水氮互作对水稻氮吸收与利用的影响[J].中国农业科学,2004,37(4):497-501.
[10] 陈新红,徐国伟,王志琴,等.结实期水分与氮素对水稻氮素利用与养分吸收的影响[J].干旱地区农业研究,2004,22(2):35-41.
[11] 孙永健,孙园园,李旭毅,等.水氮互作下水稻氮代谢关键酶活性与氮素利用的关系[J].作物学报,2009,35(11):2055-2063.
[12] Zhou S L,Wu Y C,Wang Z M,et al.The nitrate leached below maize root zone is available for deep-rooted wheat in winter wheat-summer maize rotation in the North China Plain[J].Environment Pollution,2008,152(3):723-730.
[13] 罗盼盼,聂立水,辛颖,等.水氮耦合对三倍体毛白杨无性系BT17叶片养分的影响[J].应用生态学报,2012,23(11):2949-2954.
[14] 王李芳,刘国顺,张永辉,等.水氮耦合对烤烟干物质积累及产质量的影响[J].作物研究,2011,25(1):51-55.
[15] 邹建民,史建军,冯敏玉,等.水氮耦合对烤烟团棵期光合特性的影响研究[J].江西农业大学学报,2009,31(2):220-225.
[16] 杨杰,方俊,胡德秀,等.偏最小二乘法回归在水利工程安全监测中的应用[J].农业工程学报,2007,23(3):136-140.
[17] 秦蓓蕾,王文圣,丁晶.偏最小二乘回归模型在水文相关分析中的应用[J].四川大学学报:工程科学版,2003,5(4):115-118.
[18] 黄林芳,李文涛,王珍,等.濒危高原植物羌活化学成分与生态因子的相关性[J].生态学报,2013,33(24):7667-7678.
[19] 贾光林,黄林芳,索风梅,等.人参药材中人参皂苷与生态因子的相关性及人参生态区划[J].植物生态学报,2012,36(4):302-312.
[20] 刘燕德,熊松盛,至境,等.赣南脐橙园土壤全磷和全钾近红外光谱检测[J].农业工学报2013,29(18):156-162.
[21] 张浩,胡昊,陈义,等.水稻叶片氮素及籽粒蛋白质含量的高光谱估测模型[J].核农学报2012,26(1):135-140.
[22] Hu J C,Cao W X,Zhang J B,et al.Quantifying responses of winter wheat physiological processes to soil water stress for use in growth simulation modeling[J].Pedosphere,2004,14(4):509-518.
[23] 许振柱,周广胜,肖春旺,等.CO₂浓度倍增和土壤干旱对两种幼龄沙生灌木碳分配的影响[J].植物生态学报,2005,29(2)281-288.
[24] 陈全胜,李凌浩,韩兴国,等.水分对土壤呼吸的影响及机理[J].生态学报,2003,23(5):972-978.
[25] Shangguan Z P,Shao M A,Dyckmans J.Effect of nitrogen nutrition and water deficit on net photosynthetic rate and chlorophyll fluorescence in winter wheat[J].Journal of Plant Physiology,2000,156(1):46-51.
[26] Wang J,Baerenklau K A.Crop response functions integrating water,nitrogen,and salinity[J].Agricultural Water Management,2014,139:17-30.
[27] Lawlor D W,Cornic G.Photosynthetic carbon assimilation and associated metabolism in relation to water deficits in higher plants[J].Plant Cell Environment,2002,25(2):275-294.
[28] 刘瑞显,王友华,陈兵林,等.花铃期干旱胁迫下氮素水平对棉花光合作用与叶绿素荧光特性的影响[J].作物学报,2008,34(4):675-683.
[29] 尹鹏达,赵丽娜,朱文旭,等.基于偏最小二乘回归的填充型烤烟优化施肥研究[J].中国烟草科学,2011,32(4):61-65.

选择文件类型/文献管理软件名称

选择包含的内容