How to fertilize rape in winter

Rapeseed is one of the main oil crops in China, its plant is tall, the growing period is long, and the demand for fertilizer is relatively large, and fertilization in winter can also enhance the ability to protect against the cold and promote early development after spring, so how to apply fertilizer in winter? Let's have a look with the editor.

1. Skillful application of seedling fertilizer

After transplanting and turning green, the seedling fertilizer should be applied in time, the earlier the better. Generally, urea 3-5kg, potassium chloride 5kg, boron fertilizer 300kg 500g, thin human and animal manure water 750kg-1000 kg should be applied 1-2 times per mu. Or apply 45-50 kg ammonium bicarbonate per mu and turn green as soon as possible, so as to make full use of the high temperature after sunny weather to promote rape to grow roots and leaves as soon as possible.

2. Heavy application of wax fertilizer

Wax fertilizer is mainly organic fertilizer. For the land with medium fertilizer, 1000-1500 kg of rotten farm manure, 10-12 kg of calcium superphosphate and 5-7.5kg of ammonium bicarbonate are applied per mu. Then apply it into the row, combined with ploughing and weeding, so as to keep warm, promote root, protect root and increase fertilizer.

3. Foliar fertilizer spraying

Foliar spraying phosphate fertilizer can enhance the cold resistance of rape. The method of preparing phosphate fertilizer solution is to crush it with 2 kilograms of phosphate fertilizer per mu, then put it into a container and soak it with an appropriate amount of water, remove it after a week, and add 200 grams of urea per mu. Spray the leaves until dripping is appropriate. If the container is small and the fertilizer solution is insufficient, a small amount of water can be added to reduce the evaporation of the solution and maximize the absorption and utilization of the leaves, the foliar fertilizer should be sprayed in the sunny afternoon in the windless weather.

4. Spring fattening and strong seedlings

To do a good job of fertilizing and strengthening seedlings of late-planted rape in spring is an important measure to solve the problem of late-planted rape to obtain high yield. generally, 8-10 kg of urea is applied per mu after spring and 5-7 kg at bolting stage. Rely on spring fertilizer to achieve the purpose of high yield, strictly prevent the occurrence of downy mildew in late rape after spring, and can be controlled by pesticides such as methomyl and Hekuling during the bolting period.

The above is the introduction of how to fertilize rape in winter. I hope it can help you. If you want to know more about it, please follow us.