Single ridge planting ridge width 3 meters ( including ditch ). Double ridge planting adopts " slanting type " ridge width 6 m ridge to open a narrow ditch drainage . When applying ridges, heavy application of base fertilizer is mainly organic fertilizer . Generally, per acre Application of composting compost 1500-2000 kg decomposed cake fertilizer 80-100 kg 25% ternary compound fertilizer 30 kg phosphate fertilizer 20 kg potassium sulfate 5 kg .
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