Effects of Fertilizer and Density on Chlorophyll Fluorescence Characteristics in Foxtail Millet Hybrid Zhangzagu 5

doi:10.7668/hbnxb.2015.06.031

Abstract

Abstract: In this study,a quadratic general rotation combination design with five factors was employed to evaluate the effects of fertilizer levels(N,P₂O₅,and K₂O) and plant density(row and plant spacing) on chlorophyll fluorescence characteristics of foxtail millet,taking Zhangzagu 5 as experiment meterial.The results showed that the level of nitrogen had significant effects on effective photochemical quantum yield(Y(Ⅱ)),coefficient of photochemical fluorescence quenching(qP),coefficient of non-photochemical fluorescence quenching(qN) and maximum photochemical quantum yield(Fv/Fm) of millet.And Y(Ⅱ) and qP had a trend from rising to declining with nitrogen increasing.With nitrogen increasing qN decreased at first and then increased and Fv/Fm was promoted.The effects of phosphate level on Y(Ⅱ) and qN were evident,which had a trend from rising to declining with phosphate increasing.The effects of potassium levels on Y(Ⅱ) and qP were obvious.The row spacing had great effects on Y(Ⅱ),qP and qN.And Y(Ⅱ) and qP had a trend from rising to declining,but qN was increased after decreasing with row spacing narrowing.The effects of plant spacing on all indexes were not significant.The interactions between the nitrogen level and potassium level showed significant effects on Y(Ⅱ) and qP.The interaction effects of other factors on chlorophyll fluorescence kinteics parameters were not obvious.Multivariate quadratic regression analysis revealed a relationship between these factors and all index of Zhangzagu 5,which could be used for crop production forecasts.

Key words: Fertilizer, Density, Chlorophyll fluorescence, Zhangzagu 5

CLC Number:

S515.01
S14

YANG Yan-jun, ZHAO Hong-mei, CAO Yu-feng, LI Hong-yan. Effects of Fertilizer and Density on Chlorophyll Fluorescence Characteristics in Foxtail Millet Hybrid Zhangzagu 5[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(6): 201-208. doi: 10.7668/hbnxb.2015.06.031.

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