Seedling raising method of rapeseed

Oilseed rape is a kind of vegetable sown and planted. Generally, it is necessary to raise seedlings and then transplant. Direct seeding is uneven, or some seedlings do not emerge and need to be replanted. Raising seedlings can solve such problems: when to raise seedlings, what preparatory work should be done, and then how to do it, and what some management is like after emergence. These are the main parts of this article. Friends in need can read and understand.

1. Sowing time

Rape is usually cultivated in summer and autumn, so sowing and breeding should be carried out about half a month in advance, so that it can be transplanted into the field at the best time for planting. But it can also be cultivated in some areas in summer, such as areas with lower temperatures in high mountains. There is also a greenhouse can be out-of-season cultivation, greenhouse can advance the time of cultivation.

2. Soaking seeds to accelerate germination

Soaking seeds to accelerate germination can make it easier for seeds to germinate. in addition, accelerating germination can make seeds emerge more neatly, and most of the seeds can be sowed and germinated quickly. Soak the seeds in clean water for 5 hours, then drain and then sprout. Because the seeds are small, they can be soaked without hot water. Sprouting can be treated with clean wet sand for self-use. A layer of 20 centimeters of sand, put on the seeds, and then cover 2 to 3 centimeters of sand. Add ice and water to the thermos flask to germinate the seeds and change the water once a day. Or wrap the seeds in a wet cloth and put them in an incubator at 15 to 20 degrees and rinse them once a day.

3. Sowing and raising seedlings

Direct seeding in the seedbed, seeding evenly in the seedbed, or sowing in a trench, should also be evenly sown, so that it is convenient to sow seedlings. Sowing and covering soil 1 cm, after accelerating germination, covering soil is shallower than direct seeding, which is convenient for germination. If the temperature is good in spring and autumn, the seedlings can not be protected, or they can be raised in the greenhouse, which is relatively fast. Buds need to be moisturized, but to reduce direct sunlight, seedlings can be raised in shade.

4. Seedling emergence management

Watering the soil after sowing to make the soil moist, and to maintain it all the time, it is best to water every morning and evening, but the amount of water is not much, the spray is better, and the seedling leaves can absorb water quickly. But it doesn't cause water in the soil. After emergence, leafy vegetables are prone to soft rot, downy mildew, quenching and other diseases. Dehumidification and sprinkling rice husk can absorb moisture and prevent diseases. However, the diseased plants should be removed first, and then carbendazim and other agents should be sprayed to eliminate the disease. When the seedlings grow to 5 cm, you can see the dense degree of sparse seedlings, leaving strong seedlings, the rest are pulled out. When there are 5 leaves, it can be transplanted and planted.

Raising seedlings is the premise of planting, and the quality of raising seedlings directly determines the growth status in the later stage. therefore, attention should be paid to the period of raising seedlings, and the selection of healthy and high-quality seedlings is a prerequisite for high yield and high quality. I won't say much here. Thank you for reading. Support.