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What are the requirements for greenhouse cultivation technology of bulbing fennel?

Although fennel is not so common, it is a very important type of vegetable in our lives. Fennel vegetables belong to the genus Fennel in the family Umbelliferae, and there are many types. The common ones are anise, fennel, and fennel. We are more familiar with cumin. Its seeds can be used as seasonings and its seedlings can be eaten as vegetables. They have a special aroma and can be chopped into buns or dumplings.

The taste of bulbed fennel is similar to that of cumin. In addition to the edible young leaves, the expanded and tender bulb scales are the main part used. The planting area of ??fennel bulbs in our country has not been large, and it is only grown sporadically in some areas in the north. In recent years, as a new type of vegetable, it has been planted more and more.

It is much more difficult to grow bulbing fennel than ordinary fennel. The purpose of growing bulbing fennel is to obtain enlarged bulbs. However, due to various reasons during cultivation, the bulbs often grow very small or bolt early. As a result, the bulbs will not grow, so the planting technology of bulbing fennel is relatively high, which mainly includes the following aspects. 1. First of all, let’s understand the suitable environmental conditions for the growth of bulb fennel

Bulb fennel is native to the Mediterranean coastal areas and likes a cool climate. The suitable temperature for growth is 15-25℃, and it is relatively cold-resistant and heat-resistant; It has a high demand for water, especially during the bulb formation period, which requires a higher soil moisture content; it has a high demand for nutrients and is intolerant of barrenness; it likes sufficient light 3. Key points for growing bulbous fennel in greenhouses

1. Sowing and raising seedlings

In production, the planting method of bulbing fennel is often adopted, which is to first raise seedlings and then transplant. The bulbous fennel seedlings are smaller and can be planted in a 72-hole plug tray. The preparation of nutrient soil can be the same as for other vegetables (solanaceous fruits, melons), or you can purchase nutrient soil directly.

In order to ensure neat emergence of seedlings, soak the seeds in room temperature water for 20-24 hours before sowing. Place one seed in each hole. After sowing, cover with film and moisturize until the seedlings emerge. After the seedlings emerge, remove the film in time, reduce watering, see dry and wet, and cultivate strong seedlings. The seedlings are about 40-50 days old, have 5-6 true leaves, and are about 20cm tall. They are ready for planting.

2. Planting

Before planting, prepare the land first, apply enough base fertilizer, apply 3-5 tons of decomposed organic fertilizer, 50 kg of compound fertilizer, 25 kg of urea per acre, and plow the ground Afterwards, the land was carefully leveled, and small sorghum borders were made from north to south for planting. The border width is 80-120cm, the border height is 10-30 cm, 2-3 rows are planted, and the spacing between rows is 40cm*40cm. Depending on the variety, plant sparsely or densely. Pour enough water after planting.