## 6 Conclusions  
(1) According to the agronomic requirements of Codonopsis membrane side outcrop cultivation, a kind of combined machine for transplanting Codonopsis outcrop onto a micro ridge covered with film was designed. The field capacity of the entire machine has reached 0.45-0.65 hm\({}^{2}\cdot\)h\({}^{-1}\), When the number of workers is equal, it has 4-5 times the field \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{3}{*}{**Number**} & \multirow{3}{*}{\begin{tabular}{c} **Forward** \\ **Speed** \\ **(m/s)** \\ \end{tabular} } & \multirow{3}{*}{\begin{tabular}{c} **Number of** \\ **Plants** \\ \end{tabular} } & \multirow{3}{*}{\begin{tabular}{c} **Number of** \\ **Qualified** \\ **Plants for** \\ **Plants for** \\ **Planting** \\ **Depth** \\ \end{tabular} } & \multicolumn{3}{c}{\begin{tabular}{c} **Number of** \\ **Qualified** \\ **Plants for** \\ **Plants for** \\ **Planting** \\ **Picture** \\ **Side** \\ **Outcrop** \\ \end{tabular} } & \multicolumn{3}{c}{\begin{tabular}{c} **Number of** \\ **Qualified** \\ **Polarified** \\ **Rate of** \\ **Planting** \\ **Planting** \\ **Posture/\%** \\ \end{tabular} } & \multicolumn{3}{c}{\
\begin{tabular}{c} **Qualified** \\ **Rate of** \\ **Film Side** \\ **Outcrop/\%** \\ **Outcrop/\%** \\ \end{tabular} } & \multicolumn{3}{c}{
\begin{tabular}{c} **Qualified** \\ **Rate of** \\ **Film Side** \\ **Outcrop/\%** \\ \end{tabular} } \\ \hline
1 & 0.1 & 40 & 38 & 36 & 36 & 95.00 & 90.00 & 90.00 \\
2 & 0.1 & 40 & 38 & 39 & 38 & 95.00 & 97.50 & 95.00 \\
3 & 0.1 & 40 & 39 & 38 & 38 & 97.50 & 95.00 & 95.00 \\
4 & 0.15 & 40 & 37 & 37 & 36 & 92.50 & 92.50 & 90.00 \\
5 & 0.15 & 40 & 38 & 35 & 35 & 95.00 & 87.50 & 87.50 \\
6 & 0.15 & 40 & 36 & 35 & 35 & 90.00 & 87.50 & 87.50 \\
7 & 0.2 & 40 & 36 & 35 & 32 & 90.00 & 87.50 & 80.00 \\
8 & 0.2 & 40 & 36 & 34 & 35 & 90.00 & 85.00 & 87.50 \\
9 & 0.2 & 40 & 37 & 32 & 34 & 92.50 & 80.00 & 85.00 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Results of planting test. capacity of manual work. The operation process of the entire machine is simple, reducing labor intensity and improving production efficiency. After the emergence of Codonopsis seedlings, water injection irrigation under the film can be carried out at both ends of the ridges and ditches, which solves the problem that the Codonodopsis cannot be irrigated under the requirements of dryland film-mulched transplanting. (2) This study sets the relevant parameters of the core components of the whole machine and studies the working mechanism. The installation angle of the reshaper has been determined to be 60\({}^{\circ}\), the angle between the seedling-throwing direction and the horizontal plane of the seedling-throwing device is 60\({}^{\circ}\), and the seedling-throwing height is 80 mm. A rotary tillage knife is used to cut the soil and cover the seedlings with soil. Using EDEM to conduct motion simulation of the rotary tillage and soil-covering operation process of the equipment, the simulation results show that when the forward speed of the rotary tillage knife is set to 0.2 m/s and the rotational speed is set to 300 r/min, the requirements for the thickness and width of the soil cover for the seedlings can be met. (3) The field test results showed that the variation coefficient of plant spacing and the qualified rate of planting depth reached the standard requirements when the target plant spacing was 4.4 cm and the working speed was 0.1, 0.15, and 0.2 m/s. When the working speed of the prototype increased, the plant spacing and planting depth were greatly affected. The qualified rate of the planting posture and the film outcrop were greatly affected by the working speed of the whole machine and decreased with the increase in the working speed. When the machine moved forward at a speed of 0.1 m/s, the average variation coefficient of planting spacing was 0.08%, the average qualified rate of planting depth was 95.83%, the average qualified rate of planting posture was 94.17%, and the average qualified rate of film side outcrop was 93.33%.