Figures (5)  Tables (4)

    • Figure 1. 

      Effects of different treatments on plant height of C. ensifolium 'Dongfang Honghe'. Different lowercase letters indicate the difference between different treatments of the same time (p < 0.05).

    • Figure 2. 

      Effect of different treatments on the number of C. ensifolium 'Dongfang Honghe' leaves.

    • Figure 3. 

      Single-factor effect analysis of leaf number, total nitrogen and total phosphorus of C. ensifolium 'Dongfang Honghe'. (a) One-way effects analysis of leaf number; (b) One-way effect analysis of total nitrogen content of leaves; (c) One-way effect analysis of leaf total phosphorus content.

    • Figure 4. 

      Effects of factors coupling total nitrogen and total phosphorus of C. ensifolium 'Dongfang Honghe'. (a) Interaction effect analysis of total nitrogen content; (b) Interaction effect analysis of total phosphorus content. Darker colours indicate a stronger effect of the interaction on nutrient content, while lighter colors indicate a weaker effect. The transition of colors from cooler to warmer shades corresponds to a trend from low to high N/P content.

    • Figure 5. 

      Heat map of correlation between three factors and morphological indices and leaf nutrient content indexes of C. ensifolium 'Dongfang Honghe'. Blue indicates a negative correlation, red indicates a positive correlation, and the darker the color, the stronger the correlation. The thinner the blue ellipse, the smaller the value, the closer it is to −1. The more elongated the red ellipse, the larger the value, the closer it is to 1. * p ≤ 0.05 and ** p ≤0.01.

    • Matrix ratio Volume weight (g·cm−3) Total porosity (%) Ventilation porosity (%) EC (µS·cm−1) pH
      Pine bark : perlite = 6:4 0.2 57.2 35.3 180.0 6.55
      Pine bark : cedar plank : perlite = 3:3:4 0.2 57.0 25.0 33.5 6.75
      Cedar plank : perlite = 6:4 0.2 63.0 30.0 43.5 6.72
      Bamboo charcoal : cedar plank : perlite = 3:3:4 0.3 52.0 19.0 82.5 7.56
      Bamboo charcoal : perlite = 6:4 0.3 45.0 18.0 105.0 7.37

      Table 1. 

      Physicochemical properties of different matrix ratios.

    • Treatment Total root
      length (cm)      		 Total root surface
      area (cm2)      		 Average root
      diameter (mm)      		 Total root
      volume (cm3)      		 Total nitrogen
      (mg·g−1)      		 Total phosphorus
      (mg·g−1)      		 Total potassium
      (mg·g−1)
      1 280.2e 250.5h 3.01l 20.1i 8.2f 5.6a 17.4hi
      2 262.3g 302.2e 3.6a 28.0e 19.0a 4.8ab 35.4abc
      3 208.0n 179.2o 2.7o 12.4o 14.3cd 5.7a 24.5efg
      4 190.8o 182.6n 3.1k 13.9n 17.6ab 1.7d 31.0cd
      5 389.2a 437.4a 3.6b 39.4d 12.3de 2.0d 21.3fgh
      6 234.0j 247.6i 3.3g 21.0h 19.0a 4.7ab 27.8de
      7 216.6l 230.3j 3.3h 19.9j 7.8f 1.8d 10.3j
      8 260.9h 226.8l 2.8n 15.7m 7.8f 3.9bc 25.6de
      9 169.6p 136.4p 2.5p 8.8p 11.3e 4.4ab 24.3efg
      10 235.9i 255.3g 3.4d 22.0g 15.5bc 2.6cd 33.1bc
      11 265.0f 271.2f 3.3i 22.2f 10.5ef 4.3ab 19.5gh
      12 112.6q 100.5q 2.8m 7.4q 14.5cd 3.9bc 33.2bc
      13 230.8k 230.0k 3.2j 18.3k 8.5f 4.2ab 13.6ij
      14 209.8m 218.2m 3.4f 18.1l 17.8ab 4.4ab 33.9abc
      15 382.7b 356.7b 3.5c 45.1a 18.5a 5.2ab 38.9a
      16 353.7d 350.6c 3.4e 42.1b 19.8a 5.7a 38.5ab
      17 371.4c 340.5d 3.4d 41.7c 18.8a 5.3ab 38.0ab
      18 382.7b 356.7b 3.5c 45.1a 18.5a 5.2ab 38.9a
      19 353.7d 350.6c 3.4e 42.1b 19.8a 5.7a 38.5ab
      20 371.4c 340.5d 3.4d 41.7c 18.8a 5.3ab 38.0ab
      Different lowercase letters indicate the difference between different treatments of the same index (p < 0.05).

      Table 2. 

      Effects of different treatments on root parameters and leaf nutrient content of C. ensifolium 'Dongfang Honghe'.

    • Targets Information entropy value Information utility value Weights (%)
      Seedling height 0.943 0.057 10.887
      Leaf number 0.947 0.053 10.001
      Root length 0.951 0.049 9.246
      Root surface area 0.95 0.05 9.41
      Root diameter 0.957 0.043 8.085
      Root volume 0.917 0.083 15.832
      Nitrogen 0.914 0.086 16.264
      Phosphorus 0.941 0.059 11.114
      Potassium 0.952 0.048 9.162

      Table 3. 

      Calculation results of the weights of morphological indicators and leaf nutrient content indicators of C. ensifolium 'Dongfang Honghe' under different treatments.

    • Treatment Comprehensive score index Ranking
      1 0.41 13
      2 0.66 4
      3 0.51 9
      4 0.42 12
      5 0.57 6
      6 0.59 5
      7 0.27 17
      8 0.43 10
      9 0.33 16
      10 0.55 7
      11 0.42 11
      12 0.33 15
      13 0.36 14
      14 0.54 8
      15 0.88 1

      Table 4. 

      Combined scores of morphological indexes and leaf nutrient content indexes of C. ensifolium 'Dongfang Honghe' under different treatments.