摘要
【目的】探究硼、钼和铜3种微量元素肥料对太子参块根生长及产量构成的影响,优化微肥施用量配比,为太子参高效栽培提供依据。【方法】采用二次回归D-最优设计进行田间试验,建立各因素与太子参块根生长指标的回归方程并进行统计分析。【结果】(1)硼钼铜配施对太子参块根的生长性状有显著影响。元素因子分析表明,硼、钼和铜分别对太子参块根分蘖、块根的膨大以及伸长有显著影响作用。硼钼、硼铜互作分别对太子参块根的根长、产量影响显著。(2)硼钼铜配施显著促进块根产量的提高,单因素微肥对产量影响由大到小依次为铜、钼和硼;双因素互作对产量的影响由大到小依次为硼铜、硼钼和钼铜。(3)成功拟合了3种微肥与块根产量关系的三元二次回归方程,F检验值达显著水平。进一步通过统计频数法得到太子参高产的优化施肥方案,为硼肥1.0025~1.4642 g/L、钼肥0.0580~0.0963 g/L、铜肥0.0386~0.0814 g/L。(4)灰色关联分析结果表明,太子参块根各生长指标与产量关联程度的由大到小依次为根长、直径和分蘖数。Topsis综合评价法得出施用硼肥1 g/L,钼肥0.08 g/L,铜肥0.05 g/L组合时块根生长性状与产量最优。【结论】不同微肥对太子参块根产量构成因子的影响不同,适当的硼钼铜配施对太子参块根具有显著增产效应,对块根伸长及增粗生长的促进是其增产的主要机制。
[Objective]To study the effects of boron,molybdenum and copper on root growth and yield composition of Pseudostellaria heterophylla,optimize the proportion of micro-fertilizer application and provide a basis for efficient cultivation of P.heterophylla[.Method]The field experiment was carried out by the quadratic regression D-optimal design and the regression equation between various factors and root growth indexes of P.heterophylla was established and statistically analyzed.[Result](1)The combined application of boron,molybdenum and copper had significant effects on the growth characters of root tubers of P.heterophylla.The element factor analysis showed that boron,molybdenum and copper respectively had significant effects on root tillerings,root diameters and root lengths of P.heterophylla.The combined application of boron and molybdenum had significant effects on root lengths and the combined application of boron and copper affected the yield of root tuber as well.(2)The combined application of boron,molybdenum and copper significantly increased the root yield.The effect of the single micro-fertilizer on the yield ranked as copper>molybdenum>boron and the effect of the combined application of two micro-fertilizers on the yield ranked as boron-copper>boron-molybdenum>molybdenum-copper.(3)The ternary quadratic regression equation of the three micro-fertilizers and root yield was successfully fitted and the F test value reached a significant level.Furthermore,the optimal fertilization scheme for high yield of P.heterophylla was obtained by statistical frequency method,which was:boron fertilizer 1.0025-1.4642 g/L,molybdenum fertilizer 0.0580~0.0963 g/L and copper fertilizer 0.0386-0.0814 g/L.(4)The grey correlation analysis showed that the correlation degree between different root growth indexes and yield ranked as root lengths>diameters>tiller numbers.The Topsis comprehensive evaluation method showed that the root growth characters and yield were the best when boron fertilizer was 1 g/L,molybdenum fertilizer was 0.08 g/L and copper fertilizer was 0.05 g/L.[Conclusion]The study demonstrated that the effects of different micro-fertilizers had different effects on root yield components of P.heterophylla.Proper combined application of boron,molybdenum and copper could significantly increased the yield of root tubers by promoting the growth of root lengths and thicknesses.
作者
袁婷婷
王舒媛
谢寅峰
马迎莉
李佳馨
王雨竹
YUAN Ting-ting;WANG Shu-yuan;XIE Yin-feng;MA Ying-li;LI Jia-xin;WANG Yu-zhu(Co-Innovation Center for Sustainable Forestry in Southern China,College of Biology and the Environment,Nanjing Forestry University,Nanjing 210037,China;South College of Nanjing Forestry University,Nanjing 210037,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2020年第4期664-673,共10页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家科技支撑计划项目(2015BAD04B02)
江苏高校优势学科建设工程项目(PAPD)
南京林业大学2019年大学生创新创业训练计划(2019NFUSPITPI1088)。
关键词
太子参
微量元素肥料
回归方程
产量
Pseudostellaria heterophylla
trace element fertilizer
regression equation
yield
