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Seed Nursery of Taxus chinensis (I)
Seedlings of Taxus chinensis var. mairei seedlings (above) Taxus chinensis var.mairei is a combination of medicinal, material, and ornamental, which has a high value for development and utilization. Due to poor seed coat permeability and long dormancy, it is difficult to reproduce seeds. However, as long as we master the biological characteristics of Taxus chinensis var.mairei and operate strictly in accordance with the technical regulations, the seedlings will surely be successful. The specific operations are as follows: 1. The selection of nursery land and the selection of fertilizing nursery sites are deep soil layers, loose structure, and rich in organic matter. Well-drained rice fields that are not exposed to the sun (must be the paddy soil that was harvested during the year). After the mid-late rice was harvested, the soil was dried and then deep-slipped once. The soil was broken once, and then the beds were separated. 1.5 meters wide bed (bed width 1.2 meters wide, 0.3 meters wide trails), bed height 20 cm, bed length depends on the nursery. At the same time as the preparation of the bed, a per mu application of 8,000 kg of decomposed cow dung, 200 kg of instant high-quality compound fertilizer, and 6 to 8 kg of carbofuran are used to control underground pests. After turning the fertilizer into the soil and flattening the surface of the car, fill in the yellow soil on the car surface and make it 5 cm thick. Second, timely sowing of seeds through a year of storage, there are some cracks. At this time, it is sieved and washed, soaked in 0.05% potassium permanganate solution for 10 minutes, rinsed with water, and then sown after drying. Seeding is divided into sowing and seeding. The sowing is to spread the seed evenly on the nursery bed filled with yellow soil, cover the seed with yellow soil, use the seed as a measure, and cover all the seedbed with moss. For the drill, 15 cm wide planks were selected and the seedlings were planted on a bed filled with yellow soil. The depth was 2 cm and the distance between the sowing ditch was 15 to 20 cm. The seeds were evenly sown in the ditch and covered with yellow earth, with a thickness of 1 cm, and the seed furrows were covered with moss. It should be noted that: First, strict control of the amount of sowing, 15 kg per mu seed, otherwise it will seriously affect the secondary seedlings qualified seedling emergence rate; Second, after sowing, sowing must be covered with moss to cover the seedbed, seeding as long as the seedlings covered with moss ditch. After the seedlings are unearthed, the moss is not to be removed and kept on the seedbed for a long period of time. Moss seedlings have the following advantages: to protect the seedbed from splashing and direct sunlight, so that the seedlings are not burned by the sun, and to avoid suffocation due to the formation of mud sticks on the stems and leaves, and often to keep the soil loose and moist and reduce the work of weeding and weeding. However, the mosses covered should be thin and not too thick. In the event of prolonged drought and no rain, fine moss can be used to hold down the moss or spray water to keep the seedbed moist.