How should fertilization management be done before overwintering for direct-seeded rapeseed?

(Agricultural Wealth Network) Applying sufficient base fertilizer and topdressing seedling fertilizer are important parts of pre-winter management for rapeseed. Generally, for direct-seeded rapeseed after rice, apply 1000 kg of decomposed pig manure or 50 kg of compound fertilizer per mu at sowing; for direct-seeded rapeseed interplanted in rice fields, apply it immediately after the rice is harvested. Topdressing for direct-seeded rapeseed. Generally, after full emergence, apply 1 to 2 times of thin manure water as topdressing; at the 3-leaf stage, apply 1 time of strong-seedling fertilizer as topdressing. The amount of topdressing can be determined according to the strength of the spring habit of the rapeseed variety and the vigor of growth; generally, the seedling fertilizer topdressing is 5 to 7.5 kg of urea per hectare.