The past few years have demonstrated that rice transplanters offer significant advantages, including improved quality, higher yields, cost savings, reduced labor, and increased efficiency. As a result, they are becoming increasingly popular among farmers. In this article, we will take the PF455S rice transplanter as an example to explain the key technical aspects of its operation and adjustment.
**Preparations Before Transplanting**
1. **Field Preparation**:
The field should be level, with a height difference of no more than 3 cm across the plot. After transplanting, the field should be "inch to water," meaning it should be evenly flooded. Additionally, the surface must be clean, free of weeds, debris, and clods of mud. The soil should be well-rotted to prevent the transplanter from getting stuck or clogged.
2. **Seedling Preparation**:
Seedlings should be cut into discs measuring 58 cm by 28 cm using a sharp knife. The moisture level in the seedling tray is crucial—when pressed with a finger, the soil should feel slightly damp but not too wet or dry. If it's too dry, the seedlings may become loose and float; if too wet, they might grow too large, leading to excessive plants per hole.
3. **Transplanter Preparation**:
Before use, inspect the transplanter and ensure that the engine has enough gasoline and oil. Add grease to all moving parts, check that bolts and nuts are tightened, and make sure all gears are properly lubricated.
**Five Key Adjustments for the Transplanter**
1. **Needle and Guide Rail Clearance**:
The standard gap between the needle and guide rail should be between 1.3 and 1.7 mm. If the gap is incorrect, loosen the rail adjustment handle slightly, adjust the guide rails left and right, and ensure both sides are equal.
2. **Needle and Seedling Box Side Clearance**:
The clearance between the needle and the side of the seedling box should be 1.5 to 2.5 mm. If not correct, loosen the bolts on the seedling box support and slide bar, then adjust the position of the seedling box to achieve even clearance on both sides.
3. **Spacing Between Planting Holes**:
The standard spacing is 30 cm, but this can be adjusted based on soil fertility, rice variety, and planting time. Generally, the handle should be set in the middle position, with spacing between 12 and 14 cm.
4. **Transplanting Depth Adjustment**:
The depth of insertion can be adjusted by moving the depth-adjustment handle up for shallower planting and down for deeper planting. Alternatively, you can replace the jacks on the floating plate support to fine-tune the depth.
5. **Number of Seedlings per Hole**:
Typically, about five seedlings per hole are ideal. This can be controlled by adjusting the vertical pick-up amount and the lateral feed, which affects how many seedlings are picked up by the needles. Each adjustment changes the seedling volume by approximately 1 mm. Moving the handle to the left increases the number of seedlings, while moving it to the right decreases it. After setting the horizontal delivery position, adjust the vertical picking amount to maintain a balanced number of seedlings per hole.
**Three Essentials When Operating the Machine**
The operator should plan the route for entering and exiting the field to make seedling refilling and machine maintenance easier. While transplanting, keep the following in mind:
1. **Maintain a Steady Speed**:
Avoid sudden stops or frequent speed changes. Keep a straight path while driving, and avoid pulling or twisting the steering handle to ensure consistent planting lines. Sharp turns can cause gaps or reinsertion, affecting transplant quality.
2. **Monitor the Seedling Roller**:
Pay attention to the condition of the seedling roller inside the seedling box. If roots or dirt are found in the slot, stop the machine immediately to prevent damage to the seedlings.
3. **Position the Seedling Box Correctly**:
After all seedlings have been planted, move the seedling box to one side to ensure proper alignment and maintain high-quality transplanting results.
ood Grade Supplement Same Medication,Food Grade Supplement Sam Supplement,Medication Sam E
Jiangxi Chengzhi Bioengineering Co., Ltd , https://www.chengzhi-bio.com