The paddy field of water direct broadcast paddy-sulfuron-methyl during water preparation, and it is feasible to sow water after 7-10 days.
This method is not recommended. The direct seeding season of wheat bran is tight, and it should be sown immediately after wheat is harvested. Seeding after 7 to 10 days after soil preparation is not only unfavorable to early sowing, but also the soil after the site preparation is often too heavy, which is not conducive to rice in the soil, and seeding is likely to occur after sowing. In addition, although pyrazosulfuron can bind well with the soil, its water-solubility is strong. When drainage is sowed, there will be more drug loss with water, which is not conducive to the effective use of drugs.
The direct-seeded paddy field should generally be closed for 1 to 2 days after sowing. When the seedlings are in the stage of emergence to pinning, they should be treated with pretilachlor and its mixture with bensulfuron-methyl and pyrazosulfuron-methyl. The amount of pyrazosulfuron should not be too large, and the amount of pure drug per acre should not exceed 1.5 grams, otherwise it is easy to produce phytotoxicity to rice.
This method is not recommended. The direct seeding season of wheat bran is tight, and it should be sown immediately after wheat is harvested. Seeding after 7 to 10 days after soil preparation is not only unfavorable to early sowing, but also the soil after the site preparation is often too heavy, which is not conducive to rice in the soil, and seeding is likely to occur after sowing. In addition, although pyrazosulfuron can bind well with the soil, its water-solubility is strong. When drainage is sowed, there will be more drug loss with water, which is not conducive to the effective use of drugs.
The direct-seeded paddy field should generally be closed for 1 to 2 days after sowing. When the seedlings are in the stage of emergence to pinning, they should be treated with pretilachlor and its mixture with bensulfuron-methyl and pyrazosulfuron-methyl. The amount of pyrazosulfuron should not be too large, and the amount of pure drug per acre should not exceed 1.5 grams, otherwise it is easy to produce phytotoxicity to rice.