Detailed Explanation of Key Points for Soybean Narrow-Row Dense Planting Cultivation Techniques on Small Ridges

Key points for soybean narrow-row dense planting cultivation techniques on small ridges: 1. Crop rotation: rotate in a three-zone rotation with @#@245@#@, corn, and other crops, or rotate every other year with wheat, corn, and other crops, to avoid continuous cropping. 2. Soil tillage: first, flat plowing and ridging. Second, rotary tillage and ridging. Third, ridging while sowing. 3. Variety selection: choose semi-dwarf, semi-determinate type varieties with strong stems that do not lodge, are disease-resistant, high-yielding, and suitable for dense planting; the maturity period should be suitable or slightly earlier than local varieties. 4. Seed preparation: first, seed selection. Second, seed treatment. 5. Fertilization: first, increase application of farmyard manure. Second, appropriately increase seed fertilizer. Third, foliar topdressing. 6. Sowing: first, sowing time; sowing can begin when the tillage layer temperature steadily passes 8°C. Second, sowing method; sow on ridges in fields ridged in autumn, and for fields not yet ridged, ridges can be formed while sowing, with a sowing depth of 4 to 5 cm. Third, density; generally increase by 25% to 30% compared with conventional ridge planting, with about 450,000 seeds sown per hectare. 7. Field management: first, chemical weed control after sowing and before emergence. Second, deep loosening before cultivation. Third, intertillage weeding. Fourth, chemical regulation techniques. 8. Pest and disease control: first, if aphids, red spiders, thrips, etc. are numerous at the seedling stage, dimethoate or omethoate plus an appropriate amount of water can be sprayed on the leaves. Second, control gray mold. Third, control fruit borers. 9. Harvest: for manual harvest, harvest once the plants have shed their leaves.