T/NAASS 084-2024 The cultivation technology specifications for high-quality and high-yielding silage corn in the cool and damp area of Liupanshan are as follows

Scope

Scope: This document specifies the technical specifications for high-quality and high-yield cultivation of silage corn in the humid and cold regions of the Liupanshan Mountains, including variety selection, land preparation, sowing, fertilization, mulching, field management, silage harvesting, and soil fertility compensation. This document is applicable to the production of high-quality silage corn in areas with an effective temperature above 10°C and >2,300°C in the humid and cold regions of the Liupanshan Mountains; Main technical content: 3. Variety selection: Select approved, mid-maturity corn varieties suitable for the Liupanshan humid and cold regions with good disease resistance, rapid grain filling, and high dry matter content. 4. Land preparation: In spring, from late March to early April, prepare the land by harrowing and weeding when it is suitable for cultivation. 5. Fertilization and mulching: Apply N 20-22 kg, P2O5 8-10 kg, and K2O 6-8 kg per 666.7 m2 during the entire growth period. Combine with base fertilizer application during land preparation, applying N 10-12 kg, P2O5 5-7 kg, and K2O 6-8 kg per 666.7 m2, and 1 kg of zinc sulfate. If slow-release fertilizer is used, apply all fertilizer at once during land preparation (slow-release fertilizer: ordinary nitrogen fertilizer = 2:1), at a rate of 45-55 kg/666.7 m2, with a fertilization depth of 15-20 cm. The slow-release fertilizer standard complies with GB/T 23348-2009. Before mulching, drill holes according to the distance between double ridges and furrows. Complete land preparation and mulching operations in one go. 6. Sowing: Sow in early to mid-April when conditions are suitable. Plant the seeds 3-5 cm sideways in the ridges and furrows. The seed quality must meet the requirements of GB 4404.1. 7. Planting density: Plant 5,500-6,000 holes per 667 m2, with 5,000-5,500 seedlings per 667 m2. 8. Field management: Transplant the seedlings promptly when they emerge, and loosen the soil when necessary

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