1, Preparation of Nutritious Soil and Medicinal Soil General principle of preparing Nutritious Soil: Nutritious soil has the characteristics of rich nutrition, loose texture, good air permeability, strong water retention, neutral pH, and no pathogenic bacteria, eggs and weed seeds. The specific preparation varies according to local conditions and crop types, and can be roughly referred to the following proportions: soil, horse manure, furnace ash, sand: 50%, 15%, 20%, 15%. Soil, horse manure and excrement: 70%, 15% and 15%. Field soil, horse manure and large manure: 34%, 33% and 33%. Field soil, horse manure, furnace ash and large manure: 60%, 30%, 7% and 3%. Medicated soil: use Miaojundi (20g/ bag) or Sudokuling (20g/ bag), and add 20--30kg and10-15kg of fine sand to each bag respectively, which will be used when sowing.
2. Seeding is usually carried out in the middle and late April.
3. Selection of seeds of nine-story pagoda: The seeds should be fresh and full seeds with strong germination, and impurities, fine soil and shriveled grains should be removed by screening, air separation and water separation. The purpose of seed treatment: the purpose of seed treatment is to promote seed germination, improve germination rate and germination potential, eliminate germs and viruses attached to seed epidermis, and enhance crop stress resistance. The seed treatment method of nine-story tower: put the seeds into a container, first pour a little cold water and soak the seeds. After about 3-5 minutes, after the seed epidermis is soaked and absorbs some water, slowly pour hot water into the container and stir it with a wooden stick while pouring, so that the seeds are heated evenly.
When the water temperature in the container rises to 50-55℃, the heating of water can be stopped; When the temperature drops, add some hot water to keep the water temperature at the required temperature15-20min, then naturally cool to about 25℃, and continue to soak the seeds, and the soaking time shall be subject to the fact that the seeds are just saturated with water. After soaking seeds for 7-8 hours, a layer of mucus usually appears on the surface of seeds, which is easy to be moldy during germination, leading to rotten seeds.
Therefore, after soaking the seeds, the nine-story tower should rinse the seeds repeatedly with clear water, and rub them hard until the mucus on the surface of the seeds is removed, put the seeds into a gauze bag, shake off the water hard, cover them with a wet towel or gauze, keep warm and moisturize, and put them at a temperature of about 25℃ for germination. In the process of accelerating germination, rinse with clear water 1 time every day, and control the cleaning. If the seed quantity is large, turn it1-2 times every day to make the temperature balanced and sprout orderly. The temperature can be slightly higher in the early stage of germination to promote germination. When the bud is about to sprout (the seed will open its mouth), the temperature should be lowered by 3-5℃ to make the bud thick and tidy. After the buds are all in place, in case of special weather, the buds can be moved to the place of 5-10℃ to control the growth of the buds and wait for sowing.
4. Sowing should be carried out on a sunny morning. Put the nutrient soil into the sowing tray, pour it thoroughly with hot water or warm water. After the water permeates, spread 1 layer of medicinal soil, evenly sow the sprouted seeds in the tray, cover it with 1cm thick medicinal soil, cover it with plastic film, and keep warm and moist.
Planting method of nine-story tower
1.
Nine-story tower is a deep-rooted plant, and its roots can be buried 50 ~100 cm, so it is appropriate to choose sandy loam with good drainage and loose fertility. Before planting, apply sufficient base fertilizer, level and rake, and make the flat or high border of the party about 130 cm.
2. Breeding method
Reproduce with seeds. Sowing in the south from March to April, and in the north from late April to early May. Shallow furrows should be made according to the row spacing of about 35 cm for drill sowing, and shallow holes should be made according to the hole spacing of 25 cm for hole sowing, which should be evenly spread into ditches or holes, covered with a thin layer of soil and kept moist, and 3-4.5 kg of seeds should be used per hectare. Nine-story towers can also be transplanted by seedling raising, and seedlings can be raised in sunny beds in March in the north, and transplanted in the field when the seedling height is10 ~15cm. Watering practically after transplanting.
3. Field management
When the height of the nine-story tower seedlings is 6 ~ 1 0cm, the seedlings should be thinned and replenished, and 2 ~ 3 seedlings should be reserved for each hole in hole sowing, and the drilling should be10cm1plant. Generally, intertillage weeding is done twice, and the first time is after emergence10 ~ 20 days, and the topsoil is hoed shallowly. The second time is from early May to early June. Before the seedlings are closed, human and animal manure should be applied after each intertillage. Nine-story pagoda is afraid of drought in its seedling stage, so it should be watered in time.
4. harvesting and processing
The stems and leaves of the nine-story tower are harvested in July and August, and the whole grass is cut and dried. The seeds are harvested from August to September, and the whole grass is harvested when the seeds are mature, and the seeds are ripened for a few days, and the seeds are laid to remove impurities.