Fennel, also known as fennel seedlings, fennel, etc., with tender stems and leaves for edible organs, crisp and delicious, unique flavor.
With the improvement of people’s living standards and changes in the consumption structure, the demand for the market is increasing. In recent years, the greenhouses in our area have been widely planted and supplied for an annual anniversary, which has achieved good economic benefits. Especially listed in the winter and spring, it plays an important role in regulating the supply of off-season vegetables and increasing the variety of vegetables. Its characteristics and cultivation techniques are described below.
First, the characteristics of plants
Fennel is a perennial herb of the Umbelliferae family. Underdeveloped roots, plant height 20 ~ 40cm, stems erect, branched, smooth and glabrous, pilan powder. Leaves alternate, dark green, leaf length 25 ~ 30cm, width 4 ~ 5cm, petiole long, base sheath-shaped and broadly amplexoid. Yellow flowers, compound umbel inflorescence, fruit double-suspended fruit, sharp fruit rim, inner 2
Seeds.
Anise-like cold climate, cold and heat. Seed germination temperature 16 ~ 23 °C, growth temperature 15 ~ 18 °C,
More than 24 °C poor growth, air relative humidity of 60% to 70% growth is good. The adaptability to the soil is strong, and all kinds of soil can grow, but fertile loam soils with strong fertilizer and strong water are preferred. Requires a balanced supply of nitrogen, phosphorus, and potassium fertilizers.
Second, cultivation technology
1. Variety selection Anise has 3 kinds of anise, fennel and bulb anise. The spring planting uses fennel,
Autumn and winter cultivation of anise or bulb anise.
2. The soil fertilization roots of the fennel have a shallow distribution, so the site preparation must be detailed. Every 667m2 application of high-quality farmyard fertilizer 3
More than 000kg, superphosphate 50kg; turn the floor 15 ~ 20cm deep, breaking the soil block for rake, rake width 1m, pouring enough bottom water to prepare for sowing.
3. Soak the seed in cold water at about 15°C for 12h before sowing and soaking, and then at 18～2.
The germination was carried out at 0°C, and the seeds were sown when the seeds became white. Can also be used 5mg/kg gibberellin soaked for 12h to promote germination. Seeding can be used for sowing or seedling sowing, with 5-6kg per 667m2 seedlings;
8kg. Drilling line spacing 10 ~ 12cm, depth 1cm or so. Water immediately after sowing, keeping the temperature above 15°C,
Wet surface moisture to facilitate emergence.
4. Manage the post-emergence and time seedlings, keep the plant spacing 4cm, and combine the seedlings to weed the grass. Anise avoid high temperature,
It grows well when it is 15-20°C, and it is vulnerable to freezing when it is lower than 4～5°C. When the temperature reaches 25°C, ventilation should be strengthened. When the seedling height is about 10cm, topdressing is performed, 667m2 is applied with 15kg of urea, and watering is performed in combination with topdressing. If you harvest multiple times, apply the same amount of nitrogen fertilizer after each harvest.
5. Diseases and Insect Pest Control The main diseases during the growth of fennel are sclerotinia and powdery mildew. Insect pests include mantle and aphids. 70% Mancozeb WP for Diseases 600 to 700 times or 75% Chlorothalonil WP 500～
600 times liquid control; 500 times the ground locust with trichlorfon irrigate root, aphid with 2.5% deltamethrin EC 2000 times liquid control.
6. The harvest will begin when the seedlings reach the height of 20-30 cm. If it is harvested, it can be uprooted; if it is harvested many times, it will be cut at 2 to 3cm on the surface. The output of 667m2 is about 2000kg.
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