Use Techniques for Paddy Field Rotary Cultivators

1. Appropriate Water Intake. Too much water makes it difficult for the field to form mud, failing to meet quality requirements; too little water makes it hard to 

level the field and increases friction resistance of agricultural machinery in the soil. Therefore, water should generally be added 2 to 4 hours before rotary 

harrowing, with a depth of 6 to 8 cm. For plowed fields, the soaking depth should allow the furrow tips to remain exposed.

2. Blade Installation. The direction of the rotary tiller's curved blades should be determined based on soil surface conditions. For leveling ridges, install the 

blades facing outward; for filling trenches, install them facing inward; for general tillage, use a mixed installation. To minimize straw and weeds from directly

 contacting the blade shaft, extend the two bolts by about 10 cm when installing the leftmost and rightmost blades on the shaft to prevent grass entanglent.

3. Rotary Harrowing Speed. The forward speed of the walking tractor and the rotational speed of the blade shaft should be adjusted according to specific 

conditions. For unplowed stubble fields during the first pass, the tractor should use slow second gear, and the blade shaft should operate at low speed. 

For the second and third passes or plowed paddy fields, the tractor can use slow third gear, and the blade shaft should operate at standard speed.

4. Driving Direction. Many operators use the "overlapping harrow" method, creating repeated harrow circles at the edges, wasting time and fuel. The correct

 method is the "diagonal harrow" approach: start harrowing one harrow width to the left or right of the field's diagonal, then gradually expand outward,

 finishing with a single pass around the field edge. This method improves efficiency, reduces fuel consumption, and ensures quality.

5. Number of Harrow Passes. Based on rice transplanting agronomic requirements, thrown seedling fields generally require 2 to 3 harrow passes.

 For manually transplanted fields, 2 passes are sufficient. Excessive passes damage soil structure, leading to compaction and accelerating machinery wear 

and fuel consumption. Insufficient passes fail to meet agronomic standards.

6. Preventing Slippage. Before operation, mark filled-in ponds or ditches with bamboo poles. If slipping occurs, use a stake-based self-rescue method: 

drive a wooden stake about 5 meters ahead of the tractor, tie a steel cable to the stake and the drive wheel, engage gear, and crank the engine to pull the

 tractor out. Alternatively, use a draft animal or a higher-powered tractor for rescue.