Vegetable soilless seedling raising technology

Soilless seedlings are a new type of seedling raising technology. Instead of using soil to raise seedlings, cultivating roots with basal seedlings is used. The matrix used is slag, peat, sand, sawdust, rice hull, vermiculite, perlite, etc., which can be used singly or in combination with 2-3 kinds; the site can be based on Greenhouses, greenhouses or temporary shading sheds are used in different seasons. Soilless seedlings have the following characteristics: The matrix has a wide range of sources and can be sourced locally. The material is lightweight, low in cost, and has good air permeability. The roots of the seedlings developed are well developed and the seedlings are strong. Compared with seedlings grown in the soil, the stems are thick, the leaves are hypertrophic, the dry matter is large, and the seedlings are of good quality. Soilless seedlings can be easily disinfected due to the matrix and can avoid soil diseases. Soilless breeding costs. Soil seedlings require a large amount of organic fertilizer, which requires site preparation, land-based planting, large labor transportation volume, weighing 0.5 kilograms per seedling, soilless seedlings without soil colonization, and one person can easily carry 10,000 seedlings to the field. The formulated nutrient solution with top dressing is not lost, and the amount of fertilizer used is small. The survival rate, seedling rate, seedling survival rate and seedling survival rate are higher than that of soil seedlings, which can greatly save seeds and greatly reduce the overall cost. As the soilless seedlings made the seedling roots well developed, the seedlings were quickly replanted, the seedling quality was good, and the growth and development were fast. As long as the management was timely after planting, both showed early maturation (5 to 7 days) and increased production by 15 to 20%. Technical tips for soilless seedlings: Build seedlings. In nursery places, according to the terrain and area requirements, the width and length are 1.5 to 1.67 meters. Dig 6 to 12 centimeters deep, dig 12 to 14 centimeters deep with brewing material, and then level it, using earth or bricks to make it. Pave the agricultural film and heating stuff. Place a plastic film (used in the old film) in the pot, and press a 6 to 8 mm thick hole in accordance with the guideline of 15 to 20 cm for ventilation and seepage. In addition to the incorporation of tepid material into the soil under the membrane, a layer of 5 to 10 cm of brewing material can also be laid on the membrane under conditional conditions. After laying on the solid material, it is then laid on the substrate 2 to 3 cm thick. . Lay hotline. There is a heating material on the laying of the electric heating wire, no heating material, first on the film pad 1 ~ 2 cm thick matrix (such as slag), and then in the above per square meter area 80 to 100 watts power standard Paving hotline. Matrix preparation. For each square meter of nursery area, prepare substrates in 0.1 cubic meters, preferably in a matrix prepared by a professional farmer. Soilless seedlings have a shorter seedling age than conventional seedlings. For example, tomatoes need only 50 to 60 days, sweet peppers and eggplants only take 70 to 80 days, and cucumbers take 36 to 40 days, depending on the appropriate planting period for different crops. Push forward to the desired number of days of seedlings to determine the sowing date for different crops.

Large ring lactone class ANTIBIOTIC (MACROLIDES antibiotics, MA) is a kind of molecular structure of between 12 and 16 carbon lactone ring the floorboard of the antibacterial drugs, by blocking in the 50 s ribosomal peptide acyl transferase activity to inhibit bacterial protein synthesis, belongs to the fast bacteriostatic agent Mainly used in the treatment of aerobic gram positive coccus and negative coccus And some anaerobic bacteria legionella infection such as mycoplasma chlamydia But recent studies have shown that large ring lactone class antibiotic except antibacterial effect, but also has other extensive pharmacological effects

MACROLIDES

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