Selection of hydroponic nutrient solution for Mesembryanthemum crystallinum L.at seedling stage

doi:10.16178/j.issn.0528-9017.20220826

Abstract

Abstract:

In order to select suitable nutrient solution formulas for hydroponic cultivation of Mesembryanthemum crystallinum L. seedlings, a floating cultivation model was used to study the effects of different nutrient solution formulas on biomass and morphological indicators of Mesembryanthemum crystallinum seedlings. The results showed that in terms of biomass and morphological indicators of Mesembryanthemum crystallinum, formula A had the most lateral branches, large and numerous leaves, large crown width, long root system, and growth, followed by Japanese horticultural universal formula and formula B. Formula C had the worst growth of Mesembryanthemum crystallinum and was not suitable for hydroponic seedling growth. The ice crystal grains on the leaves and stem segments of Mesembryanthemum crystallinum seedlings grown with formulas A and B containing 2 000 mg·L^-1 NaCl were larger. In conclusion, formula A is most suitable for the growth of Mesembryanthemum crystallinum seedlings in hydroponics. Under this salt concentration, Mesembryanthemum crystallinum grows well, the ice crystal grains on the stem and leaves are large, and the marketability is good. This article provides a reference for nutrient solution formulation for the large-scale hydroponics production of Mesembryanthemum crystallinum.

Key words: Mesembryanthemum crystallinum, seedling stage, hydroponics, formula of nutrient solution

CLC Number:

S636.9

Jin ZHOU, Jun LIU, Yinxiu HEI, Jianglai XU, Xiuyuan WANG. Selection of hydroponic nutrient solution for Mesembryanthemum crystallinum L.at seedling stage[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(2): 335-339.

Figures/Tables 10

Table 1

营养液	四水硝酸钙	硝酸钾	磷酸二氢铵	磷酸氢二铵	七水硫酸镁	氯化钠
A	945	809	77	88	493	2 000
B	826	809	153	88	493	2 000
C	708	809	153	88	493	2 000
CK	945	809	153	0	493	0

Fig.1 Hydroponic device in a light incubator

Fig.2 Hydroponic installation in the greenhouse

Table 2 Physical properties of nutrient solutions in different formulations

营养液	总盐含量/ (mg·L^-1)	pH值	EC/ (mS·cm^-1)	N $H 4 +$ -N/ (mmol·L^-1)	N $O 3 -$ -N/ (mmol·L^-1)	P/ (mmol·L^-1)	K/ (mmol·L^-1)	Ca/ (mmol·L^-1)	Mg/ (mmol·L^-1)	S/ (mmol·L^-1)
A	4 412	7.75	1.87	2.00	16.01	1.34	8.00	4.00	2.00	2.00
B	4 369	7.53	1.93	2.66	15.00	2.00	8.00	3.50	2.00	2.00
C	4 339	7.41	2.11	4.00	14.00	2.66	8.00	3.00	2.00	2.00
CK	2 400	6.50	1.80	1.33	16.01	1.33	8.00	4.00	2.00	2.00

Table 2 Physical properties of nutrient solutions in different formulations

营养液	总盐含量/ (mg·L^-1)	pH值	EC/ (mS·cm^-1)	N $H 4 +$ -N/ (mmol·L^-1)	N $O 3 -$ -N/ (mmol·L^-1)	P/ (mmol·L^-1)	K/ (mmol·L^-1)	Ca/ (mmol·L^-1)	Mg/ (mmol·L^-1)	S/ (mmol·L^-1)
A	4 412	7.75	1.87	2.00	16.01	1.34	8.00	4.00	2.00	2.00
B	4 369	7.53	1.93	2.66	15.00	2.00	8.00	3.50	2.00	2.00
C	4 339	7.41	2.11	4.00	14.00	2.66	8.00	3.00	2.00	2.00
CK	2 400	6.50	1.80	1.33	16.01	1.33	8.00	4.00	2.00	2.00

Table 3 Effect of different nutrient solution formulations on the biomass of Mesembryanthemum crystallinum

营养液配方	地上鲜重/g	地下鲜重/g	地上干重/g	地下干重/g	鲜重冠根比	干重冠根比
A	48.86±1.39 a	0.98±0.38 a	1.45±0.23 a	0.09±0.03 a	49.80	15.38
B	27.81±4.48 b	0.58±0.09 a	0.87±0.11 b	0.05±0 ab	47.77	16.19
C	14.52±2.47 c	0.49±0.04 a	0.57±0.12 b	0.05±0.01 b	29.78	11.31
CK	26.76±1.10 b	0.64±0.15 a	0.63±0.09 b	0.06±0.01 ab	41.75	10.88

Fig.3 Effect of different nutrient solution formulations on morphological indexes of Mesembryanthemum crystallinum

Fig.4 Effect of different nutrient solution formulations on leaf area of Mesembryanthemum crystallinum

Fig.5 Effect of different nutrient solution formulations on root length of Mesembryanthemum crystallinum

Fig.6 Effect of different nutrient solution formulations on crown width of Mesembryanthemum crystallinum

Fig.7 Effects of different nutrient solution formulations on seedling growth of Mesembryanthemum crystallinum

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