When and how to plant rape?

China is divided into two major producing areas: winter rape (planted at the end of September and harvested at the end of May) and spring rape (planted at the end of April and harvested at the end of September).

The area and yield of winter rape account for more than 90%, mainly concentrated in the Yangtze River basin, and spring rape is concentrated in the northeast and northwest regions, especially Hailar, Inner Mongolia.

Planting method:

1. Site selection and soil preparation: Rapeseed has strong adaptability, so the requirements for soil are not so strict. However, for cohesive soil, we should pay attention to turning it for a few days before soil preparation, watering it once before sowing, and turning it again after two days with compound fertilizer.

2. Planting methods: There are two ways to plant rape. The first way is live broadcast. Rapeseed is planted in rows at certain intervals. After the seedlings grow out, the dense areas are removed and can be used for cooking. The second way is to cultivate rape seedlings first, and then plant them one by one at regular intervals.

3. Field management: When rape grows to 15-20 cm, the vegetable field should be fertilized and weeded once. The fertilizer applied this time is urea, so as to raise seedlings. When rape grows to about 40 cm, it should be fertilized twice. This time, the fertilizer applied is farmyard manure. The last fertilization is spraying boron fertilizer before flowering, which is helpful to enrich the fruit in the later stage.

Extended data

Matters needing attention in rape planting:

1, lighting

Both light time and light intensity will have certain effects on the growth of rape. If there is not enough light during the growth process, the root elongation and expansion speed of rape will slow down. It affects the absorption and transportation of nutrients by roots, hinders the later growth and reduces the yield. Sufficient light can greatly promote the growth of rape, enhance the photosynthesis of leaves and improve nutrient accumulation.

Step 2: Moisture

When rape grows well, the plants are larger and the leaves are more fertile, so the water needed for growth will be larger. However, the water requirement of each growth stage is different. For example, there is not much water demand at seedling stage, as long as the soil is moist when the temperature is high and the soil is dry. Flowering stage is the stage with the largest water demand, and the water content in the field must be ensured to be no less than 75% at this stage.

3. Land

Rape belongs to straight-rooted crops except roots. Rape roots are thick and have many branches, and the main roots can enter deep soil. Therefore, planting rape must be carried out on fertile soil with deep soil, rich organic matter and strong water and fertility conservation. The acidity of soil PH value is more suitable for the growth of rape and can increase the oil content of rape.

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