Fennel is an annual herbaceous crop of the genus Aniseed in the family Umbelliferae, originating from the Mediterranean coast and West Asia. Fennel seeds have a flavor, is commonly used spices, medicinal herbs, young stems and leaves and characteristic vegetables, in China's northern region cultivation is more common.

1, fertilization

Fennel root distribution is shallow, the whole land requirements are meticulous. Each mu of land with high-quality rotting farmyard fertilizer 3000-5000 kg, 40-50 kg of calcium superphosphate, while the deep turning of the ground 15-20 cm, breaking up the soil for the bed, the width of the bed 1 m, watering the bottom of the water, in order to prepare for the sowing of seeds.

2, the right amount of seed

Fennel is suitable for dense planting, so more than the use of bed sowing, can be spread or strip sowing, an acre of land sowing amount of 3 kg or so, bulbous fennel plant is relatively large, need to reduce the density of the appropriate, to reduce the amount of seed sowing.

3, loose soil weed

Fennel seedlings topsoil force is weak, seedling growth is slow, before and after the emergence of the seedling, we have to break the knot in a timely manner, to help the seedling out of the soil. When the seedlings come out of the soil to show the line, timely weeding to release the seedlings can be. In the fennel seedling period, we should timely plow and weed, in order to keep the field loose and clean, conducive to plant growth and development.

4, water and fertilizer management

Fennel like drought and fear of humidity, if the humidity is too high, it is easy to cause extensive dead seedlings. Therefore, irrigation should take a small number of times. In the whole life span of fennel, you need to irrigate 3-5 times, preferably in cloudy days or evening, and the water in the field must be removed in time. If the plant growth is poor, it can be combined with seedling irrigation water, and 5-10 kilograms of urea can be sprinkled on each mu of land. If the fennel set pattern is used, during the flowering period, water should be sprayed properly with a sprayer once a week, or it can be sprayed with a solution of potassium dihydrogen phosphate.

5, pest control

In the growth period of fennel, the main diseases are botrytis, powdery mildew, etc., and insect pests are ground maggots, aphids, etc. For fennel diseases, the main 70% diclofenac manganese-zinc wettable powder 600-800 times liquid, 75% Chlorothalonil wettable powder 500-800 times liquid for prevention and control; for ground maggots. Can be treated with 500 times trichlorfon root irrigation; aphids with 2.5% deltamethrin emulsion 2000-2500 times liquid control.

6, timely harvest

When the fennel seedling height reaches 30 centimeters, you can start harvesting. When harvesting, it should be uprooted, remove the soil, weeds, old yellow leaves, then it can be marketed for sale. For multiple harvests, when the new shoots grow 2 cm, you can water and fertilize, and just turn the ground and pour the stubble after harvesting 3-4 crops.