Forsythia breeding method

Forsythia is a deciduous shrub, which takes the first leaves and the golden yellow flowers are lovely. Capsule oval, seeds with wings. Hi-light shade, ability to -50 °C cold, drought-resistant thin but fear of embarrassment. Now its seedling technology is introduced as follows. First, sowing seedlings 1. Seed and bud processing After the harvest, the pods are harvested and stored in the wings. Seed weight 4.5 g, seeding rate 100 g/10 m2, seedling volume 3000/10 m2. Seed treatment at the beginning of April, disinfection with 0.5% potassium permanganate solution for 3 hours, soaking in 30°C warm water for 48 hours, fishing After mixing out 3 times sand, place it in a room at 10°C to 20°C. Frequently turning to keep the moisture content of the species sand 60%, and after 40 days, the seeds are 1/3. 2. Make bed and sowing. Choose dry, well-drained land and make a bed that is 10 meters long, 15 centimeters high, and 1 meter wide. 30 grams of bed soil mixed with 5 grams of quintozene nitrobenzene, and 5 grams of dexsen, made of medicinal soil. Before sowing, a layer of medicine soil is applied, and the soil is sowed after sowing or sowing. The thickness is 3 times the diameter of the seed. Pressurize the irrigating water, then pour the grass ether that weeds the weeds once, and do not water it within 10 hours. 3. Seedling management and keep the bed moist after wintering sowing, timely loose soil top dressing, when the seedling height up to 60 to 90 cm. After the defoliation, the seedlings were graded and pre-sealed before being frozen, and when the top soil was used for afforestation, the seedlings were changed for ridge cultivation. Second, cutting seedlings 1. Mining and cutting the selection of robust disease-free pests of 1 to 2 years old branches, spike 10 to 15 cm in length, diameter 0.3 to 1.5 cm, the top with strong buds 1 to 2. The cut is smooth and the lower end is cut into a 45 degree bevel. Before the sap flowed in the late autumn and early winter or early spring, it was cut along with cutting, then buried in sand and cut in July. 2. Do beds and cuttings to make beds with seedlings. The bottom of the bed is filled with brewing material that is 20 centimeters thick. The bed is then filled with soil and the substrate is 20 centimeters thick. Before cutting, the cuttings were soaked in fresh water for two days and then soaked with ABT rooting powder at 50 ppm for 2 to 4 hours. The pitch is 10 15 cm and the depth is 6 to 10 cm. 3. Shed and management After inserting, take a 60cm small arch and cover with plastic film. 1 to 2 days of pouring water, keep the bed moist and water, humidity 70% to 90%, ground temperature 23 °C to 24 °C, temperature 25 °C to 28 °C, about 20 days after the rooting of leaves. During the period, weeding and soil fertigation. Third, layering seedlings early spring selection of strong branches, digging pits 20 cm deep, the branches will be scraped into the pit, buried soil watering. After the shoots are rooted and new seedlings are cut off, new strains are formed. Fourth, rooting seedlings in early spring in the crown 70 cm away from the maternal loose soil fertilization watering, so that the roots of the surface sprouting, emergence of new strains. After artificially nurturing, seedlings that meet greening standards are cultivated. Battening, rooting and seeding methods are generally used less frequently.

Medical Engineering System

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The medical Central Gas Supply System plays a significant role in modern hosptial. The appropriate design and setup of medcal gas equipment are essential for the hospitals to ensure medical quality, as well as to save the lives and ease the pain of the gas station,Bed Head Unit,gas terminal, electrical system,nusre call system, medical pipelines and auxilliary equipment system.

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