Effect of foliar spraying of iron nanoparticles on the growth and quality of spinach

doi:10.3969/j.issn.1004-1524.20240116

Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (12): 2696-2704.DOI: 10.3969/j.issn.1004-1524.20240116

• Horticultural Science • Previous Articles Next Articles

Effect of foliar spraying of iron nanoparticles on the growth and quality of spinach

ZHANG Yaru(), XIE Jianming(), ZHANG Jing(), YANG Xuzhen, WU Zhiguo

College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China

Received:2024-02-01 Online:2024-12-25 Published:2024-12-27

Abstract

Abstract:

Using substrate cultivation, spinach variety Dabo 6 was used as the test material, and foliar spraying of nano-zero-valent iron (NZVI) at different concentrations (5, 50, 150, 300 and 450 mg·L^-1) was applied to study the effects of NZVI on the growth, photosynthetic characteristics and quality of spinach. The results showed that different concentrations of NZVI treatments increased the biomass, photosynthesis and leaf soluble sugar and vitamin C content of spinach, and showed a tendency to increase and then decrease with the increase of iron nanoparticles concentration; The largest increase was with 150 mg·L^-1. Compared with CK, its dry and fresh weight increased by 75.73% and 49.44%, net photosynthetic rate (P_n), stomatal conductance (G_s), and transpiration rate (T_r), increased by 48.39%, 52.34%, and 52.38%, respectively, root vigor increased by 80.21%, and the content of soluble sugar and vitamin C increased by 42.34% and 25.60%, respectively. Different concentrations of NZVI treatments were could effect the content of nitrate and oxalic acid to different degrees, with the 150 mg·L^-1 NZVI treatment showing the greatest reduction of 64.56% and 56.86%, respectively.

Key words: nano-zero-valent iron (NZVI), spinach, growth physiology, quality

CLC Number:

S636.1

ZHANG Yaru, XIE Jianming, ZHANG Jing, YANG Xuzhen, WU Zhiguo. Effect of foliar spraying of iron nanoparticles on the growth and quality of spinach[J]. Acta Agriculturae Zhejiangensis, 2024, 36(12): 2696-2704.

Figures/Tables 6

References 40

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处理 Treatment	单株鲜重Fresh weight/g			单株干重Dry weight/g			叶面积 Leaf area/ cm²
处理 Treatment	总鲜重 Total Fresh weight	地上部 Shoot	地下部 Root	总干重 Total Dry weight	地上部 Shoot	地下部 Root	叶面积 Leaf area/ cm²
CK	4.820±0.07 c	3.247±0.227 cd	1.573±0.189 b	0.412±0.04 cd	0.357±0.041 c	0.046±0.001 cd	598.59±13.75 c
T1	5.640±0.14 b	3.970±0.124 bc	1.670±0.035ab	0.510±0.03 b	0.403±0.023 c	0.070±0.005 bc	619.31±8.38 bc
T2	6.057±0.02 b	4.330±0.125 b	1.827±0.113ab	0.620±0.04 b	0.457±0.038 b	0.083±0.002 ab	665.26±26.44 b
T3	7.203±0.45 a	5.200±0.414 a	2.003±0.077 a	0.724±0.05 a	0.527±0.052 a	0.098±0.001 a	715.07±19.34 a
T4	5.627±0.25 b	3.790±0.225 bc	1.837±0.039 a	0.458±0.03 c	0.403±0.015 c	0.063±0.012 c	632.49±5.81 bc
T5	4.137±0.35 c	2.983±0.277 d	1.453±0.094 b	0.351±0.02 d	0.320±0.015 c	0.041±0.002 d	550.63±6.15 d

处理 Treatment	单株鲜重Fresh weight/g			单株干重Dry weight/g			叶面积 Leaf area/ cm²
处理 Treatment	总鲜重 Total Fresh weight	地上部 Shoot	地下部 Root	总干重 Total Dry weight	地上部 Shoot	地下部 Root	叶面积 Leaf area/ cm²
CK	4.820±0.07 c	3.247±0.227 cd	1.573±0.189 b	0.412±0.04 cd	0.357±0.041 c	0.046±0.001 cd	598.59±13.75 c
T1	5.640±0.14 b	3.970±0.124 bc	1.670±0.035ab	0.510±0.03 b	0.403±0.023 c	0.070±0.005 bc	619.31±8.38 bc
T2	6.057±0.02 b	4.330±0.125 b	1.827±0.113ab	0.620±0.04 b	0.457±0.038 b	0.083±0.002 ab	665.26±26.44 b
T3	7.203±0.45 a	5.200±0.414 a	2.003±0.077 a	0.724±0.05 a	0.527±0.052 a	0.098±0.001 a	715.07±19.34 a
T4	5.627±0.25 b	3.790±0.225 bc	1.837±0.039 a	0.458±0.03 c	0.403±0.015 c	0.063±0.012 c	632.49±5.81 bc
T5	4.137±0.35 c	2.983±0.277 d	1.453±0.094 b	0.351±0.02 d	0.320±0.015 c	0.041±0.002 d	550.63±6.15 d

处理 Treatment	叶绿素a含量 Chlorophyll a content	叶绿素b含量 Chlorophyll b content	叶绿素(a+b)含量 Chlorophyll (a+b) content
CK	1.582±0.07 cd	0.535±0.017 d	2.117±0.058 d
T1	1.608±0.06 cd	0.577±0.017 c	2.185±0.052 cd
T2	1.840±0.01 b	0.621±0.015 b	2.461±0.009 b
T3	2.082±0.01 a	0.755±0.002 a	2.836±0.005 a
T4	1.676±0.01 bc	0.629±0.004 b	2.305±0.004 bc
T5	1.444±0.14 d	0.418±0.002 e	1.617±0.026 e

处理 Treatment	叶绿素a含量 Chlorophyll a content	叶绿素b含量 Chlorophyll b content	叶绿素(a+b)含量 Chlorophyll (a+b) content
CK	1.582±0.07 cd	0.535±0.017 d	2.117±0.058 d
T1	1.608±0.06 cd	0.577±0.017 c	2.185±0.052 cd
T2	1.840±0.01 b	0.621±0.015 b	2.461±0.009 b
T3	2.082±0.01 a	0.755±0.002 a	2.836±0.005 a
T4	1.676±0.01 bc	0.629±0.004 b	2.305±0.004 bc
T5	1.444±0.14 d	0.418±0.002 e	1.617±0.026 e

处理 Treatment	总根长 Total root length/cm	根表面积 Root surface area/cm²	根体积 Root volume/cm³	根尖数 Root tips
CK	1 171.39±96.344 c	451.51±4.977 bc	12.47±0.605 c	986.33±63.803 c
T1	1 593.02±16.435 b	507.72±20.374 bc	13.29±0.974 c	1 178.67±90.757 bc
T2	1 817.58±79.567 b	524.23±8.810 bc	16.92±0.834 b	1 229.33±60.333 bc
T3	2 272.16±40.964 a	762.92±11.883 a	20.40±0.476 a	1 618.67±93.861 a
T4	1 210.33±42.045 c	535.20±5.360 b	16.01±0.884 b	1 263.33±32.258 b
T5	1 102.99±25.601 c	422.09±72.341 c	9.89±1.047 d	866.33±74.196 d

Effect of foliar spraying of iron nanoparticles on the growth and quality of spinach

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