The Latest Technical Methods and Tutorial for Winter Management of Rapeseed

Rapeseed is a vegetable we commonly eat, and as the name suggests, it is also a major food crop. Its planting area in our country is very large. When planting rapeseed, because of seasonal changes, its environment and temperature will also vary. Therefore, we need to adjust our management methods well. So how should rapeseed be managed in winter? Below, the editor brings you the winter management techniques for rapeseed. Let's take a look!

1. Intertillage and Fertilization

When rapeseed planting enters winter, we must first do a good job of intertillage. Because winter temperatures are very low, intertillage can not only raise soil temperature, but also loosen the soil and directly protect the roots, which is very beneficial to the root growth of rapeseed. Then an appropriate amount of organic fertilizer should be applied between the rapeseed rows. Organic fertilizer can not only provide sufficient nutrients for rapeseed, but also raise soil temperature. Keeping warm during overwintering allows rapeseed to flower and bolt normally, and can also increase the potassium content of rapeseed and reduce freezing.

2. Clearing Ditches and Draining Waterlogging

When planting rapeseed in winter, if snowy weather occurs, then after the snow, the snow in the drainage ditches should be cleared away in time. This avoids excessive water accumulation in the field, which would affect the growth of rapeseed roots, hinder nutrient absorption by rapeseed, and prevent it from overwintering safely. It can also prevent disease after the snow melts and the phenomenon of leaves freezing after thawing during the day. This would cause frost damage to rapeseed and, in severe cases, cause large numbers of rapeseed plants to die. Therefore, the work of clearing ditches and draining waterlogging is very important, and it is also a key measure for promoting roots, protecting leaves, and helping strong seedlings overwinter.

3. Irrigation to Prevent Freezing

Before the winter freeze-up, we should pour an appropriate amount of freezing water. Pouring freezing water is very critical for rapeseed overwintering, because freezing water can reduce the temperature difference between day and night and improve the field microclimate. It avoids rapeseed being hit by excessively low temperatures, thereby reducing the phenomenon of dry freezing and dead seedlings. It is one of the main measures to improve the overwintering survival rate of rapeseed. In addition, we can also spread an appropriate amount of plant ash or rice husk ash and other materials on the rapeseed leaves, which is very beneficial for preventing frost damage to rapeseed.

4. Removing Early Bolts and Early Flowers

In winter, in order to improve the cold resistance of rapeseed, prevent frost damage, and increase the yield of rapeseed, rapeseed plants showing early bolting and early flowering should be removed in time, to avoid excessive apical dominance consuming too many nutrients. It is also a key measure for changing the internal nutrient transport pathways and nutrient focus of the plant. The nutrient focus is changed from the main stem of the plant to the branches in the lower part of the plant, improving the growth ability of the branches. After removing the bolts and pinching the growing tips, attention should be paid to applying a quick-acting fertilizer once to increase the positions where fruits set, thereby improving the quality and yield of rapeseed.

The above is a brief introduction to the winter management techniques for rapeseed. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!