Optimization and test of pneumatic lifting seed distributor for maize plot seeder.

C showed an overall trend of first decreasing and then increasing.

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C (the variation coefficient of seed distributing uniformity) showed a trend of first decreasing and then increasing.

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The BBD test results showed that cone height, seed storage tube diameter and seed storage tube lifting height had highly significant effects on the variation coefficients of seed distributing uniformity in the three situations that the seed distributor were horizontally tilted at 0° vertically tilted at 0°, horizontally tilted at 5° vertically tilted at 0°, and horizontally tilted at 5° vertically tilted at 5°.

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