Detailed Explanation of Rice No-Till Dry Direct Seeding Cultivation Technology
(1) Paddy field selection: Select a field where the previous crop was rice and which has not been plowed for no-till dry direct seeding cultivation. Fields with many malignant weeds, heavy clay soil, etc. are not suitable for no-till cultivation. (2) Weed treatment: 4 to 6 days before sowing, choose a sunny or cloudy day with a temperature above 15 degrees, use 10% "Glyphosate" 2 kg + 20% "Gramoxone" 100 ml per mu, diluted in 60 kg of water (four containers of water), and add one tablespoon of laundry detergent to each container of water, then spray to control weeds. If rain occurs within 4 hours after spraying, re-spray, otherwise the weed control effect will be poor.
(1) Paddy field selection
Select a field where the previous crop was rice and which has not been plowed for no-till dry direct seeding cultivation. Fields with many malignant weeds, heavy clay soil, etc. are not suitable for no-till cultivation.
(2) Weed treatment
4 to 6 days before sowing, choose a sunny or cloudy day with a temperature above 15 degrees, use 10% "Glyphosate" 2 kg + 20% "Gramoxone" 100 ml per mu, diluted in 60 kg of water (four containers of water), and add one tablespoon of laundry detergent to each container of water, then spray to control weeds. If rain occurs within 4 hours after spraying, re-spray, otherwise the weed control effect will be poor.
(3) Land preparation and bed formation, opening sowing furrows
With a bed width of 3.5 to 4 m, open working furrows with a width of 30 cm and a depth of 15 to 20 cm. After leveling the bed surface, open sowing furrows 4 to 5 cm deep at a row spacing of 18 cm.
(4) Sowing
After soaking seeds to promote germination, mix the seeds with seed coating agents such as "Hanyu Baomu" plus pesticides such as "Methyl Isophos" before sowing. Use the dibbling method to sow the seeds in the sowing furrows, with a seeding rate per mu of 3 to 3.5 kg for conventional rice and 1.5 to 2 kg for hybrid rice. After sowing, apply 15 kg of compound fertilizer containing 15% each of nitrogen, phosphorus, and potassium mixed evenly with 500 kg of farmyard manure per mu as base fertilizer. After sowing and fertilizing, cover with soil.
(5) Field management techniques
For field management of no-till dry direct seeding, apart from paying special attention to weed control, other field management technical measures are basically the same as those for dry direct seeding management.