Key points of rape cultivation techniques

Rape is an important oil crop in some areas, and some rely on it to support their families. At present, it has been planted in most parts of our country. What are the key points of rape cultivation techniques?

1. Select the place

Select a field with fertile texture, good drainage and irrigation and sunny back as a nursery bed, and then apply sufficient base fertilizer, mainly organic fertilizer, N, P, K, 2000-2500 kg per mu of soil miscellaneous fertilizer, 20-30 kg of superphosphate, 100-150kg of plant ash.

2. Seed selection and treatment

(1) seed selection: seeds should be dried for 1-2 days before sowing, 3-4 hours a day, and seeds should be selected with 8-10% salt water.

(2) seed treatment: soaking seeds in warm water of 50-54 ℃ for 15-20 minutes can kill bacteria and accelerate germination. Soaking seeds with 0.8% urea and 1.6% boron solution for 5 hours can promote the early development of strong seedlings.

3. Sowing seeds

Rape sowing is 0.2-0.3 Liang per mu, and the seeds can be quantified for uniform sowing. Sprinkle with appropriate fine soil or plant ash and cover lightly after sowing.

4. Post-broadcast management technology

The seedlings will be fixed in the morning after sowing. Early topdressing weeding, frequently watering and drainage, diligent prevention and control of diseases and pests, seedlings after the seedlings, so that the seedlings do not squeeze seedlings.

5. Transplanting

The main results are as follows: (1) preparation before transplanting: proper control after 5 leaves, applying "get up fertilizer" 6-7 days before transplanting, and watering in time in case of drought.

(2) pest control: aphids, budding beetles and beetles are the main pests in seedling stage, and the harm of aphids is the most serious, which can be controlled by 2.5% enemy killing 300 times solution. The application of growth regulation system to cultivate dwarf seedlings is a common technique in recent years. Spraying paclobutrazol on leaves at 3-leaf stage, rape seedlings were significantly dwarfed, the rhizome thickened transversely, the number of branches was obvious, and survived quickly after transplanting, which was beneficial to increase yield.