Rice transplanters are essential agricultural tools known for their precision, efficiency, and ability to plant seedlings in a straight line with consistent spacing. As part of key promotion initiatives, these machines have gained popularity due to their advantages in improving yield, reducing labor costs, and increasing productivity. However, improper use can lead to inefficiency or even damage to the crops. This article will focus on the PF455S rice transplanter, explaining its proper operation and adjustment techniques.
Before starting the transplanting process, it is crucial to prepare the field properly. The soil should be level and clean, ensuring that the height difference between different areas does not exceed 3 cm. Additionally, the field must be free of weeds and debris to prevent clogging or uneven planting. The mud should be well-rotted to avoid sinking or slipping of the machine during operation.
Next, seedling preparation is vital. Strong and healthy seedlings should be selected and cut into standard sizes (5828 cm) using a sharp knife. The moisture level of the soil in the seedling tray is important—too dry and the seedlings may scatter; too wet and they may float or be over-planted. The ideal consistency allows the soil to be easily pressed by hand without being overly saturated.
Before operating the transplanter, check the engine’s fuel and oil levels, as well as the lubrication in all moving parts. Ensure that all bolts and nuts are tightened securely to avoid mechanical failure during operation.
There are five key technical adjustments needed for the PF455S:
1. Adjust the clearance between the pin and rail socket to 1.3–1.7 mm. If the gap is incorrect, loosen the rail adjuster handle and move the guide rails left or right until both sides match.
2. Set the gap between the needle and the seedling box to 1.5–1.5 mm. Loosen the fastening bolts and adjust the slide bar to ensure even spacing on both sides.
3. Adjust the distance between planting holes based on soil fertility, variety, and planting time. Typically, set the handle in the middle position and maintain a spacing of 120–140 mm.
4. Control the planting depth according to agronomic requirements. Adjust the depth handle up or down, or replace the jacks on the floating plate support for more precise control.
5. Adjust the number of seedlings per hole. For most varieties, about 5 seedlings per hole is ideal. Adjust vertical picking and horizontal feeding mechanisms accordingly, using the handle to fine-tune the seedling volume.
Finally, proper operation is critical for successful transplanting. The operator should choose an efficient route for entering and exiting the field, ensuring easy access for adding seedlings. Maintain a steady speed during operation, avoiding sudden stops or changes in pace. Keep the direction as straight as possible, and avoid sharp turns that could cause misplanting. Monitor the seedling roller in the seedling box regularly, and stop immediately if any blockage occurs. After completing the planting, shift the seedling box to one side to ensure even distribution and better transplant quality.
By following these steps, farmers can maximize the benefits of rice transplanters and achieve better yields and crop health.
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