The seeds of cabbage are formed by ovule pollination and fertilization. You can get the seeds of cabbage by letting the seed plants bolt, blossom and set seeds naturally. Broccoli seeds are spread by wind and water, and the price of broccoli seeds is about one catty from 45 yuan to 60 yuan.
If lettuce is planted in spring, it can be planted in April-May, and the temperature is low in August in summer and September in autumn, which is not conducive to seed germination, but if it is planted in greenhouse, it can be planted all year round.
Method and proces for planting oilseed.
Deep excavation and soil preparation are needed before planting. After wetting the soil, sow, apply a layer of fertilizer, and finally sprinkle with fine soil, which will germinate soon.
1. The land for planting oil wheat vegetables needs deep ploughing, and the base fertilizer should be well applied. The decomposed farmyard manure can be applied together with urea, diammonium phosphate, potassium sulfate and compound fertilizer.
It is best to sow after rain. Sprinkle the seeds of oil wheat, sprinkle a layer of decomposed farm manure on it, and sprinkle a layer of fine soil on it to cover the seeds. If the ambient temperature is low, a film can be covered to accelerate germination. After that, you need to uncover the film to avoid stuffy seedlings.
3. After 5 days of germination, the seeds can be planted. At this time, the planting distance should be controlled. Generally, the plant spacing is about 20 cm, and the row spacing is 15 cm. If you sow in this interval, the yield of oil wheat vegetables will be higher and diseases can be prevented.
Problems needing attention in rape sowing
The demand for fertilizer during the growth of oilwheat vegetables is relatively large. Generally, fertilizer should be applied three times, once when the oil-wheat vegetables grow 5-6 leaves, twice when the plant height is 20 cm, and potassium dihydrogen phosphate fertilizer or foliar fertilizer can be applied when the third crop is about to be harvested.