2. Planting time. The planting time of clove seeds is also very important. Generally, we choose to plant seeds indoors or in the open field in spring and autumn. In the north, spring sowing is the best. Pot planting in cold room was carried out in late March. When the temperature is kept at 10-22℃ and 14-25 days, the emergence rate is 40%-90%. If spring sowing is carried out in the open field, it can be carried out from late March to early April.
3. sow and turn over the pots. The planting of lilacs generally adopts drill sowing, with ditching depth 1-2cm and ditching distance 10- 15cm. Apply 1000g fully decomposed organic fertilizer and 100- 150g bone meal to each hole, and fully mix with soil to form base fertilizer. Fill the ditch with water from the soles of your feet, then evenly sow the treated seeds in the ditch, and cover the seeds with soil to the depth that you can't see the seeds. After the seedlings are unearthed, they should be thinned according to the emergence situation, and the principle of weakening and preserving strength should be followed. The sowing method of potted plants is the same. We should have base fertilizer and plant it in flowerpots. In fact, whether it is indoor potted planting or open field drilling, when 4-5 pairs of leaves grow after seedling emergence, they should be transplanted into pots or interplanted. Transplanting in different pots, the first pot 1 plant. Seedlings can be interplanted or transplanted in the open field twice, with a row of 15cm× 30cm. Turn over the pots every 2 ~ 3 years, combine with turning over the pots, trim the roots, remove some old roots and long roots, remove the old soil of 1B2, and replace it with new culture soil, so as to facilitate the development of roots and flourish of leaves.
4. Breeding methods. Cloves are best planted in sunny, loose soil and well-drained places. Generally, bare roots are planted before germination in spring, and the spacing between plants is -3 meters. 2-3-year-old seedlings should be planted in a diameter of 70-80 cm and a depth of 50-60 cm. Apply 100g fully decomposed organic fertilizer and100-150g bone meal to each hole, and fully mix with soil to form base fertilizer. Water every 10 day after planting 1 time, and water continuously for 3-5 times. After each watering, loosen the soil and keep it moist to increase the soil temperature and promote the rapid growth of new roots.
Step 5 trim. Before the clove sprouts in mid-March, it should be pruned, and the dense branches, weak branches and pest branches should be desulfurized, and the middle branches should be cut off to make the crown ventilated and transparent. If there is no seed left after the flower withers, the residual flower and two buds at the lower part of the ear can be cut off to reduce nutrient consumption and promote the germination of new branches and the formation of flower buds. After defoliation, it can also be pruned once to ensure that the crown is round and beautiful, which is conducive to growth and flowering in the coming year.
6, pests and diseases. Lilac diseases and insect pests are rare. The main pests are aphids, marsupials and moths. Spraying 800 ~ 1000 times of 40% dimethoate emulsion or 1000 times of 25% thiophosphate emulsion can control it.