I. Land Selection and Consolidation
Try to choose plots with sufficient sunshine, good ventilation, convenient irrigation and drainage, and convenient harrowing. At the same time, sprinkle an appropriate amount of organic fertilizer into the soil.
Second, scientific reproduction.
Fennel can be propagated by seeds. Soak in 8000 times potassium dihydrogen phosphate for about 10 hour before sowing. After that, hole sowing and drill sowing were adopted. The row spacing of seeding holes is controlled at 30cm × 30cm, and the depth of seeding holes is about 6cm. 10- 15 sow in each sowing hole, cover it with fine soil, and then cover it with straw. Keep moist and windproof to ensure smooth germination of seeds. The row spacing of drilling holes should be controlled at about 30 cm, and the seeds should be evenly scattered into the ditch and covered with the same fine soil and straw. Hole sowing amount 10.5 ~ 12.0 kg/hm2, and drilling amount 18.0 ~ 22.5 kg/hm2.
Third, on-site management
Planting in autumn, low temperature, emergence after 15 days; If planted in spring, the seedlings will grow within 7 days. When the height of fennel seedlings is 5-6 cm, the first intercropping can be carried out; When the height of fennel seedlings is 12 cm, the second thinning can be carried out, and 2-3 plants are left in each hole; Fennel seedlings can be intercropped when they grow to 25 cm high. After fixation, each hole leaves strong seedlings. When digging holes, fix a seedling every 10 cm.
Fourthly, intercropping weeding.
During the whole growth period, weeds have a serious impact on the growth of fennel. Therefore, in the process of field management, attention should be paid to weeding and eradicating weeds in time according to the growth of weeds in the field. In order to promote the growth of fennel, the ground temperature should be raised properly during intercropping. The stem is tender at seedling stage, suitable for loosening soil, and can be gradually strengthened at later stage.
Five, water and fertilizer management
Fennel is cold-resistant and sensitive to water. Floods will gradually darken the roots of fennel, so water management is the key to fennel growth. Try to water as little as possible at seedling stage. When the topsoil is dry, pour a little water; Proper watering during vegetative growth period; Water more in the late growth period to prevent waterlogging. In addition, in order to achieve high quality and high yield of fennel, we should also pay attention to fertilization in each growth period of fennel. Fertilization must adhere to the concept of "early control and late promotion", that is, squatting young seedlings to promote the formation of strong seedlings. In the initial stage of fennel growth, the key is long leaves. Nitrogen fertilizer should be added to meet the nutrients needed for its growth; The middle and late stage is an important period for the propagation and growth of fennel. Add phosphorus and potassium fertilizer. Diammonium phosphate or ternary compounds can be used. Apply 2% calcium superphosphate 2-3 times at the root of flower bud stage to ensure the steady growth of fruit yield.
Six, timely pruning
Fennel has many main branches and obvious growth advantages. The quality of main branches and lateral branches is different, and the flowering period is longer. Therefore, it is easy to cause field collapse, plant lodging, prolonged flowering period, different seed maturity and small seeds, which seriously affects fennel yield. Therefore, pruning and branching should be carried out in time to promote inflorescence growth and increase fennel yield.
The above is the introduction of fennel cultivation methods for your reference and study, hoping to help you.