The Growth Phenotype of Tomato: Response to Physical and Chemical Properties of Cotton Straw Mixed Seedling Matrix

doi:10.11924/j.issn.1000-6850.casb20190500144

Abstract

Abstract:

The relationship between the physical and chemical properties of cotton straw mixed seedling matrix and tomato growth phenotype was studied to provide a theoretical basis for rational and efficient utilization of straw resources. Path analysis was carried out, the physical and chemical properties of compound nursery substrate of cotton straw were independent variable, and the growth phenotype of tomato seedling was dependent variable. The mature cotton straw increased the germination rate of tomato seeds significantly, after adding AM soil, mushroom residue & soot mixture and vermiculite (P<0.05). T4 (cotton straw: AM soil: Perlite = 3:0.5:1) was the best, and the tomato seedling quality had no significant difference with CK (PINDSTRUP) (P>0.05); cotton straw mixed with other base materials increased bulk density and reduced EC value (P<0.05) significantly. Path analysis showed that the main factors affecting tomato growth phenotype were density, total porosity, pH value and EC, among which aeration porosity and water-holding voids had synergistic and promoting effect, while other factors had negative effect. Moderately increasing the aeration porosity and water holding voids of the cotton-straw mixed seedling-raising matrix and reducing the bulk density, pH value and EC value could be conducive to the cultivation of tomato seedlings.

Key words: cotton straw, mixed seedling matrix, physical and chemical properties, growth phenotype, path analysis

CLC Number:

S859.84

Wang Xiaowu, Wang Zhifang, Qin Xinzheng, Chen Jing, Dai Jinping, Zhang Huitao, Xie Yuqing, Feng Lei, Gurinur Ahmaiti, Guo Wenchao, Yang Xinping. The Growth Phenotype of Tomato: Response to Physical and Chemical Properties of Cotton Straw Mixed Seedling Matrix[J]. Chinese Agricultural Science Bulletin, 2020, 36(20): 36-43.

Figures/Tables 10

References 33

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处理	秸秆/L	蛭石/L	AM菌/L	菇渣+烟渣/L
T1	3	0	0	0
T2	3	1	0	0
T3	3	1	0.5	0
T4	3	1	0.5	0.5

处理	秸秆/L	蛭石/L	AM菌/L	菇渣+烟渣/L
T1	3	0	0	0
T2	3	1	0	0
T3	3	1	0.5	0
T4	3	1	0.5	0.5

处理	发芽势/%	发芽率/%	平均胚根长/mm	发芽指数GI
T1	79.67±1.4547 c	88.23±2.8868 b	47.33±1.2019 c	72.42±1.3836 d
T2	80.00±2.8868 c	89.77±1.6667 b	50.67±0.8819 bc	78.89±3.3798 c
T3	85.70±1.5664 b	91.00±2.8868 b	52.67±1.1101 b	83.12±0.9623 b
T4	87.33±1.1647 ab	95.67±4.4096 a	59.33±1.8559 a	98.44±5.0440 a
CK	88.33±1.4366 a	93.00±1.4836 b	62.00±1.1547 a	-

处理	发芽势/%	发芽率/%	平均胚根长/mm	发芽指数GI
T1	79.67±1.4547 c	88.23±2.8868 b	47.33±1.2019 c	72.42±1.3836 d
T2	80.00±2.8868 c	89.77±1.6667 b	50.67±0.8819 bc	78.89±3.3798 c
T3	85.70±1.5664 b	91.00±2.8868 b	52.67±1.1101 b	83.12±0.9623 b
T4	87.33±1.1647 ab	95.67±4.4096 a	59.33±1.8559 a	98.44±5.0440 a
CK	88.33±1.4366 a	93.00±1.4836 b	62.00±1.1547 a	-

处理	容重/(g/cm³)	总孔隙度/%	通气孔隙度/%	持水孔隙度/%
T1	0.62±0.0147 c	71.40±1.8824 a	29.17±0.4186 a	50.13±1.1241 a
T2	0.60±0.0041 c	71.43±0.8988 a	26.41±1.5358 b	46.18±1.8601 ab
T3	0.68±0.0203 b	70.70±1.5822 a	23.43±0.2934 c	42.82±0.1345 b
T4	0.74±0.0094 a	69.93±1.1289 a	21.30±0.3817 cd	42.77±0.1877 b
CK	0.35±0.0116 d	71.03±0.8762 a	19.67±0.7141 d	49.95±3.5177 a