Seedling raising technique of broccoli

Broccoli has high economic value, so more people have planted it in recent years. If you want to plant broccoli well, you have to start from the seedling stage. So how can broccoli grow seedlings to produce good broccoli? Let's take a look at the breeding techniques of broccoli with the editor.

1. Requirements of seedling growth environment.

Broccoli is fond of cold environment and semi-cold production. The lowest germination temperature is 3 degrees, the suitable temperature is 20-25 degrees, and the highest is 35 pairs. Flower bud differentiation is not strict for low temperature. early-maturing varieties can differentiate flower buds only if the average temperature is below 20 degrees, but not at low temperature at seedling stage, otherwise they will form small florets, resulting in the loss of commercial value. Early and late maturing varieties have low temperature for flower bud differentiation and should not be cultivated in high temperature season to avoid forming hairy flower balls, so the sowing date is very important.

2. Prepare the seedbed

The seedbed should choose soil with high dryness, good drainage, good permeability and rich organic matter, and it has been planted with Cruciferae within two years to avoid aggravating the disease. The seedbed ploughed the soil 7-10 days before sowing, and then 25kg per mu of food compound fertilizer was used as base fertilizer to make the bed. The nursery bed should undergo strict disinfection measures, and the seedbed can be fully sprayed with Ramidol and Lesbon agents, sterilized and killed underground pests. In addition, in order to prevent the seedlings from being harmed by weeds, herbicides can be sprayed and watered through the seedling bed.

3. Sowing seeds

The suitable sowing time should be selected according to the local climate, variety characteristics and cultivation purpose. Generally, early-maturing varieties are sown in August, medium-maturing varieties are sown in August-September, and late-maturing varieties are sown in September-October. As the seeds of broccoli are relatively small, in order to make the seedlings have sufficient space for growth, it is necessary to do a good sowing density, generally 12-20 grams per mu. Sowing must be uniform, often use the method of sediment seed dressing and direct seeding, sow the seeds evenly on the seedbed, generally do not need to cover the soil after sowing, spray water to make the seeds in close contact with the soil.

4. Seedbed management

Broccoli corn technology is the key to seedbed management, broccoli planting sowing branches generally need 2-3 days, the time is short, and the management requirements are higher. During the germination period, one inspection should be made in the morning, in the evening, to observe the planting germination, to observe the dry and wet condition of the soil and the sunshine intensity, and to drain the water in time in the rainy season to avoid rotten seeds. In the period of high temperature, it is necessary to rely on watering to regulate the ground temperature to keep it between 25 and 30 degrees to facilitate seed emergence. Watering is best carried out before the afternoon and in the evening, cover the sunshade net as far as possible in the period of strong light, cool and prevent rain, and remove the sunshade net in time after the cotyledons are unfolded.

The above is the broccoli seedling technology introduction, hope to help you, want to know more related knowledge, please pay attention to us.