# Experimental Study of Vegetative Properties in
## 3 Results and Analysis
### Comprehensive Evaluation of the Vegetative Properties of the Substrate
#### 3.3.2 Comprehensive Vegetative Properties Scores  
This study focused on analyzing the final germination number, final coverage rate, and growth height on the 90 th day as key indicators of plant growth stages. These metrics provide a quantitative measure of how plants respond to environmental conditions. By evaluating the support provided by substrates throughout the germination and growth stages, a comprehensive score was calculated for substrates 1#-26#. This score was based on a weighted average of 40%, 30%, and 30% for the three indicators, resulting in a comprehensive evaluation index of substrate vegetative properties, as illustrated in Table 4.  
By analyzing the impact of ZL and BC contents on the comprehensive score, certain patterns emerge, as illustrated in Table 5. ZL content affects vegetative properties: at 0%, 3%, and 6% ZL content levels, the average comprehensive scores of the substrate were 81.14, 80.00, and 83.83, respectively. This suggests that optimal vegetative properties are achieved at a ZL content of 6%. However, when the ZL content was increased to 12%, the average composite score decreased to 80.00. On the other hand, the influence of BC content on vegetative properties showed a different trend. Starting at 0% BC content, the substrate had the highest average composite score of 92.50. As the BC content increased, the average composite scores gradually decreased to 89.50 (1%), 83.75 (3%), 80.50 (5%), 73.75 (7%), 72.50 (9%), and 70.50 (12%), respectively. In conclusion, a ZL content of 6% positively impacts the vegetative properties of C.d., while deviating from this level leads to a decrease in vegetative properties. Conversely, increasing BC content negatively affects vegetative properties, resulting in a gradual decrease. Therefore, to promote optimal growth of C.d., it is advisable to select a substrate ratio with medium ZL content and low BC content. The ideal ratio for the growth of C.d. was found to be 6% ZL and 0% BC. Furthermore, out of the 26 substrate groups assessed, 17 scored above 80, indicating overall good vegetative properties.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
\begin{tabular}{c} **Vegetative** \\ **Index** \\ \end{tabular} & \multicolumn{3}{c}{**BC**} & \multicolumn{3}{c}{**CL**} \\ \cline{2-7}  & **df** & **F** & **_p_** & **df** & **F** & **_p_** \\ \hline GP & 4 & 21.976 & \textless{}0.001 & 4 & 13.528 & \textless{}0.001 \\ \hline GE & 4 & 13.175 & \textless{}0.001 & 4 & 6.535 & 0.003 \\ \hline GI & 4 & 3.880 & 0.022 & 4 & 11.666 & \textless{}0.001 \\ \hline Plant height & 4 & 13.355 & \textless{}0.001 & 4 & 1.468 & 0.258 \\ \hline Coverage rate & 4 & 73.842 & \textless{}0.001 & 4 & 4.841 & 0.009 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Two-factor variance analysis of the Synodon dactyllon germination index.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \begin{tabular}{c} **Substrate** \\ **Number (\#)** \\ \end{tabular} & \begin{tabular}{c} **Coverage** \\ **Rate (\%)** \\ \end{tabular} & \begin{tabular}{c} **Score (A)** \\ **Score (A)** \\ \end{tabular} & \begin{tabular}{c} **Growth** \\ **Height (cm)** \\ \end{tabular} & \begin{tabular}{c} **Score (B)** \\ **Score (C)** \\ \end{tabular} & \begin{tabular}{c} **GP (\%)** \\ \end{tabular} & \
\begin{tabular}{c} **Score (C)** \\ \end{tabular} &
\begin{tabular}{c} **Comprehensive** \\ **Score** \\ \end{tabular} \\ \hline
1 & 94 & 94 & 19 & 81 & 75 & 100 & 92 \\
2 & 90 & 90 & 21 & 88 & 69 & 92 & 90 \\
3 & 96 & 96 & 22 & 92 & 66 & 87 & 92 \\
4 & 100 & 100 & 24 & 100 & 68 & 91 & 97 \\
5 & 95 & 95 & 23 & 97 & 60 & 79 & 91 \\
6 & 92 & 92 & 24 & 100 & 57 & 76 & 89 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Comprehensive evaluation of the vegetative properties of substrates.