In the countryside, many people grow canola at home. Generally speaking, spring canola and winter canola are planted. Spring canola is planted in late March and harvested around September. Winter canola is planted in early September. April- Harvest in May. It's been a while since winter, and it is also the time when winter rape needs to pay attention to management. Then Xiaobian will tell you about the three main points of fertilization for winter rape, and it is necessary for farmers to keep in mind.
Three main points of fertilization in winter rape:
1. Cultivate strong seedlings
Rape sowing and seedling cultivation should be determined based on a variety of factors such as variety characteristics, local temperature, and harvest time of the last crop. The sowing temperature is maintained at about 20 degrees. Select a good seedbed, apply 1500-2000 kg of rotten organic fertilizer and 30 kg of compound fertilizer per acre to mix the base fertilizer and soil evenly. At the same time, rake the ground and ditch the soil to spread the seeds. Spread the seeds evenly on the surface. For fine soil, it is advisable to cover rapeseed and keep the seedbed moist to facilitate emergence. After the emergence of rapeseed and the time and seedlings, we will strive to cultivate strong seedlings and lay the foundation for high yield.
Fertilization: when the first leaf of the seedling grows, use 0.5% urea solution to pour, 5 kg of urea per acre is applied to the third leaf, and apply 6 kg of urea once and water enough 7 days before transplanting, convenient Transplant with soil and fertilizer.
2. Deeply cultivating land and re-basic fertilizer
Winter rapeseed is mainly cultivated and transplanted in paddy fields or open fields of spring corn in the southern region. Therefore, it is necessary to cultivate the land 7 days before transplanting to a depth of 25-30 cm. Apply 6,000 kg of rotten organic fertilizer per acre, 50 After kilograms of superphosphate, 15 kilograms of potassium chloride and 0.6 kilograms of borax are fully mixed, they are evenly sprinkled on the plot, then deep into the ground, leveling the ground, and then a distance of 30-40 cm Make shallow trenches to facilitate later transplanting. Depending on the soil fertility, the transplanting density is controlled at 8000-10000 plants.
3. Management after colonization
Rapeseed has been in the seedling stage after planting until overwintering, so during this period, the length of leaves of rapeseed should be delayed, and the flower bud differentiation of rapeseed should be delayed. Seedling fertilizer should be applied immediately after planting, and nitrogen and potassium fertilizers should be added. Before rapeseed was not blocked, Applying 1500 kg of rotten organic fertilizer once, covering the seedling base, has the function of keeping warm and freezing. Since the transplantation in the rural area is carried out once after rain, the soil is easy to compact, so weeding and loosening the soil in time to improve the air permeability of the soil and promote the growth of the root system, so that rape seedlings can meet the standards of safe wintering.
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