Effects of Cow Dung Substrate on the Growth and Photosynthesis of Muskmelon Seedlings

doi:10.11924/j.issn.1000-6850.casb2020-0322

Abstract

Abstract:

Peat is recognized as an excellent substrate for horticultural seedling and cultivation all over the world, while excessive exploitation of peat will damage the ecological environment. It has practical significance to study the materials that can replace the peat substrate. This experiment took fermented cow dung as the main material, and used different volume ratios of cow dung, vermiculite and perlite to prepare seedling substrates, a commercial peat substrate was used as the control to carry out a melon seedling experiment. The authors measured the physical properties, emergence rate, growth index and photosynthetic index of different treatment substrates, and studied the effects of different ratios of cow dung substrates on melon seed germination and seedling growth. The results showed that the emergence rate of muskmelon and the physical properties of treatment I were similar to those of the control peat substrate. At the same time, the seedling root length and underground fresh weight of treatment I increased by 19.3% and 60.6% respectively compared with the peat substrate, the intercellular CO₂ concentration of seedling leaves was reduced by 12.8% compared with the control, and the net photosynthetic rate was 14.1% higher than that of the control. Therefore, the substrate prepared by fermented cow dung: vermiculite: perlite volume ratio of 6:3:1 with the adding of appropriate amount of chicken manure and citric acid could replace the peat substrate for melon seedlings.

Key words: cow dung, peat substrate, melon, grow seedlings, chicken manure, citric acid

CLC Number:

Mao Ke, Tian Qiaoling, Yu Fengqiu, Zhang Jiaxin, Zhou Luyao, Fan Yuting, Wang Jiqing. Effects of Cow Dung Substrate on the Growth and Photosynthesis of Muskmelon Seedlings[J]. Chinese Agricultural Science Bulletin, 2021, 37(32): 73-77.

Figures/Tables 5

References 27

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处理编号	发酵牛粪/L	蛭石/L	珍珠岩/L	鸡粪/g	有机肥/g	柠檬酸/g	过磷酸钙/g
I	6	3	1	35	0	0.06	0
II	6	2	2	35	0	0.06	0
III	6	1	3	35	0	0.06	0
IV	6	3	1	35	0	0	0.15
V	6	3	1	0	70	0.06	0
CK	恒先基质

处理编号	发酵牛粪/L	蛭石/L	珍珠岩/L	鸡粪/g	有机肥/g	柠檬酸/g	过磷酸钙/g
I	6	3	1	35	0	0.06	0
II	6	2	2	35	0	0.06	0
III	6	1	3	35	0	0.06	0
IV	6	3	1	35	0	0	0.15
V	6	3	1	0	70	0.06	0
CK	恒先基质

处理编号	基质容重/(g/cm³)	总孔隙度/%	通气孔隙度/%	持水孔隙度/%
I	0.1919a	73.30a	15.00bc	59.22a
II	0.1972a	74.78a	16.64ab	57.73a
III	0.2226a	74.79a	12.00c	63.62a
CK	0.1857a	82.86a	19.79a	62.08a

处理编号	基质容重/(g/cm³)	总孔隙度/%	通气孔隙度/%	持水孔隙度/%
I	0.1919a	73.30a	15.00bc	59.22a
II	0.1972a	74.78a	16.64ab	57.73a
III	0.2226a	74.79a	12.00c	63.62a
CK	0.1857a	82.86a	19.79a	62.08a

处理编号	株高/mm	茎粗/mm	叶片数/片	根长/mm	叶面积/cm²	地上部鲜重/g	地下部鲜重/g
I	86.78c	1.77c	4.50a	114.35a	134.83b	3.11bc	0.53a
II	55.44e	2.76a	3.78b	104.68b	58.67f	1.69e	0.48bc
III	78.17d	2.10b	3.75b	92.14e	98.83e	2.66d	0.35e
IV	95.56b	2.17b	4.50a	80.58f	117.87c	3.49b	0.43cd
V	90.06c	2.12b	4.00ab	102.63c	108.92d	2.98cd	0.39de
CK	109.26a	1.85c	4.33ab	95.85d	142.44a	3.88a	0.33e