How to choose broccoli? What are the methods of raising seedlings?

In addition to being a favorite of fitness, beauty and weight loss people, broccoli has also become one of the mainstream dishes in health care recipes. So how do you choose broccoli if you want to grow it? How to raise seedlings? Let's learn about it briefly.

What are the varieties of broccoli?

1. Mantuo green

Early-maturing variety, single ball weight 400-500g, bulb compact, mushroom-shaped, green color, thin buds, low hollow rate, not freeze-resistant, suitable for cultivation in early spring and autumn.

two。 New green snow broccoli

Mid-late maturing varieties, suitable for spring or autumn cultivation, harvested 80-85 days after planting. The bouquet is compact, dark green in color and oblate in shape. The flower bud is delicate, the plant has few lateral branches and empty stems, and the weight of a single ball is about 500 grams. The flower bud uniformity is high, and the cultivation adaptability is more extensive. Spring sowing and early summer harvest (the optimum temperature is 15-25 ℃).

3. Mausen broccoli

A mesophyte harvested 110 days after sowing. The plant is erect, can be closely planted, the flower bud is about 300 grams, spherical, the main stem is not easy to get hollow, fine grain, high quality, strong disease resistance, cold resistance, suitable for spring and summer sowing, early summer and autumn harvest.

2. Breeding methods and methods of broccoli

1. Seedling raising mode

The way of raising seedlings is related to the characteristics of varieties and the arrangement of stubble. The eastern coast of Zhejiang Province generally uses open-field sowing plus sunshade net to cover temperature and agricultural film to cover rain-proof seedlings.

two。 Growing environment

Broccoli likes cold environment, the lowest seed germination temperature is 3 degrees, the suitable temperature is 20-25 degrees, and the highest is 35 degrees. 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.

3. 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.

4. Sowing management

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.

5. Seedbed management

Broccoli seedling technology is the most important is the seedbed management, broccoli planting sowing branches generally need 2-3 days, the time is short, 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.

To sum up, the breeding methods and varieties of broccoli are introduced. when selecting varieties, we must choose the best according to the local climate and environment.

For wonderful pictures and articles and popular comments on broccoli variety introduction and seedling raising methods, you may be interested in the following recommended contents of Nongxun. Welcome to read.

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