Winter greenhouse nursery is an important technical measure for the early ripening of spring and summer vegetables such as pepper, eggplant and tomato, extending the supply period and increasing the yield. Here's an example of pepper, introduce its management measures. (a) seedbed preparation. Choose a plot that has not been planted with eggplant vegetables for 1 to 2 years to make a seedbed with a width of 1 to 1.2 meters and a length of 30 meters. (b) Preparation of nutritional and nutritional soils. Nutrition is 9 to 10 cm high and 8 cm in diameter. There are also used plug seedlings. Nutrient-free selection of garden soil 80% to 85%, fully cooked organic fertilizer 15%, plus a small amount of plant ash, calcium magnesium phosphate fertilizer and other mix back. (3) Seed treatment. Wash seeds first, soak them in hot water at about 55°C for 10 to 15 minutes, or soak them in 1000-fold potassium permanganate solution for 10 minutes, then soak in fresh water at room temperature for 4 to 5 hours at 25 to 30. The germination was carried out under the condition of °C, and the seeds could be sown when exposed to whiteness. (d) sowing. Before planting, sow foot bottom water, sow 10 to 20 grams of seed per square meter, soak about 1 centimeter after sowing, and cover the film until emergence. (e) Seedling management. Keep 30 to 32°C during the day and 18 to 20°C at night. After the emergence, keep 25 to 28°C during the day and 16 to 18°C ​​at night. Pay attention to controlling the temperature and prevent the seedlings from growing too long. Seedlings 1 to 2 when the true leaves are transplanted with nutrients, one seedling and one seedling, and the transplanted seedlings can be fed with 0.2% urea water. Maturation before transplantation. (6) Prevention and control of plant diseases and pests at the seedling stage. Pay attention to the prevention of diseases such as seedling damping-off, damping-off, and root rot. Increase the amount of light and perform the prosthesis in time. Promote the use of plastic sheds to cover the entire greenhouse, to reduce greenhouse air humidity, ease of management, thereby reducing the incidence of diseases. Usually no watering at the seedling stage. When you have to water, you should choose to pour warm water at noon on sunny days. Avoid excessive watering to prevent the humidity of seedbeds from being excessive, resulting in rot, sturdy seedlings and diseases. (seven) insulation and cold. Seedlings should be well insulated at night and ventilation during the day to cool down. Covers such as straw and non-woven fabrics can be covered at night, or covered with films on both sides of the greenhouse. If necessary, a small shed, a middle shed or double-layer insulation protection should be built in the greenhouse. In the event of snow, the snow on the shed should be cleared in time to prevent the snow from crushing the greenhouse. The film should be tightened and sealed to prevent the wind from scratching and covering the straw at night. Ventilation time can be selected when the temperature rises after 8:30 in the morning on the sunny day. The opaque cover should be removed in time to increase the light. Before 4 pm, the shelter should be closed and the insulation should be covered according to the weather conditions. In cold weather, the ventilation time is appropriately shortened. In cloudy and rainy weather, proper ventilation is still needed during the day so as to discharge harmful gases and reduce the humidity in the booth.
Amino Acid ,Pharmaceutical Intermediate,Taltirelin Acetate Peptide Powder
Cosmetic Peptides Co., Ltd. , http://www.ns-pharmaceuticals.com