Analysis of the interaction mechanism between straw soil rotary tillage blade during rotary tillage process.

9 a, the rotary ploughing torque showed a trend of decreasing and then increasing when the rotational speed of the knife roller was 250 mm and the size of the bending angle gradually increased from 105° to 135°.

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From Table 6 , it can be seen that the effect of regression terms X 1 , X 2 , X 3 , X 1 X 3 , X 1 2 , X 2 2 and X 3 2 of the model on rotary tillage torque are highly significant.

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