What are the planting conditions and methods of broccoli?

In recent years, the market demand for broccoli is increasing, which attracts more and more growers to plant, so what are the planting conditions and methods of broccoli?

I. planting conditions of broccoli

1. Planting: the normal planting time of broccoli begins to sow in autumn, grows in winter, and is normally listed on the table after the Spring Festival. It begins to blossom in spring and the seeds mature in April and May.

If it is summer and autumn seedlings: from August to October, the temperature is generally above 25 ℃, sometimes with a high temperature of 30-35 ℃, plus the harm of rainstorm and hail, so please use shade net to raise seedlings in the open field. Lower the temperature.

2. Light: broccoli needs plenty of sunlight, at least 4-5 hours a day. Sunlight is beneficial to the accumulation of photosynthesis and nutrients, and makes the bouquet compact and compact, with bright green color and good quality, but too strong sunshine in midsummer is also not conducive to the growth and development of broccoli, if the light time is long, pay attention to sunscreen measures.

3. Soil: broccoli likes to be rich in soil with good drainage, and its pH value is about 6.

4. Fertilizer: excessive fertile soil will lead to loose flower buds and hollow flower moss, so it is suitable to be planted on loam and sandy loam with good drainage and irrigation, deep plough layer, loose and fertile soil, strong water conservation and cost conservation. Reasonable fertilization is also essential in the process of broccoli planting. After one week of planting, we can apply seedling fertilizer, apply high-quality compound fertilizer after three weeks, and apply another compound fertilizer after five or seven weeks.

Second, the planting method of broccoli

1. Sowing seeds

First of all, put the vegetable nutrient soil into the planting box, pour through the water, and then press the hole in the soil with a cola bottle cap to a depth of about 1cm, separated by 30cm. Then sow the seeds into the hole and sow 2-3 seeds in each hole. After sowing, cover with a thin layer of soil and wait for germination after watering. The optimum temperature for seed germination is about 25 ℃.

2. Emergence of seedlings

After broccoli is sown, it usually sprouts within a week. when broccoli grows out of about 5 leaves, you can keep a strong seedling in each hole according to its growth.

3. Management

Broccoli seedlings do not need to be watered too much, wait until the soil is dry and then thoroughly irrigated. There is a large amount of water in the period of flower ball formation, so it is necessary to water it in time to keep the soil moist. The use of vegetable nutrition soil does not require topdressing, but to ensure that broccoli has enough light, broccoli can be hardy and can be planted in winter, with a maximum temperature of no more than 25 ℃, otherwise it will affect the nutrition of broccoli.

4. Harvest

About 90, broccoli can be harvested. It should be harvested in time when the bud is not yet open, so as to avoid causing the ball or blossom if the harvest is too late. When harvesting, cut off the lower part of the flower bulb with a flower stem of about 10 cm. After the top bulb was harvested, the axillary buds of the plant sprouted, and the lateral branches grew rapidly, and the lateral bouquet was formed at the top of the lateral branches. When the lateral bulb grows to a certain size and the bud has not yet opened, it can be harvested again and can be harvested for 2-3 times one after another.

Warm reminder: broccoli belongs to cool vegetables. Choose varieties with strong plant growth, dark green buds, few burnt buds, arcuate flower balls, few lateral buds, small buds, large bulbs, disease resistance and heat resistance, cold tolerance and wide adaptability. Such as: Japan's excellent, dragon green, landscape, other varieties Yuguan, Oriental Lubao, Wanlu, Lvxiu and so on or according to market demand to select all kinds of high-quality varieties. However, it must meet the national second-class seed standard before it can be used.