I. Scientific selection of improved varieties The high temperature and rain or drought in summer is extremely detrimental to the growth and development of summer cabbage cabbage. Soft rot, heart disease, virus disease, etc. can lead to severe reduction or even no harvest. Therefore, it is necessary to select heat-resistant, disease-resistant and early-maturing varieties. Should be selected under high temperature and long daylight conditions, ball tight, shortened stems not obvious elongation, disease resistance, growth period of 45 to 55 days. The currently popular varieties include Xiayang and Xiabai45. Second, strict selection of cultivation plots Apply base fertilizer, high ridge cultivation. In order to control or reduce the occurrence and harm of pests and diseases of cabbage cabbage in summer, the plots with topography, good drainage and irrigation, and loose and fertile soil should be selected. Former crops such as garlic and onion are the best. To avoid or reduce the spread and harm of viral diseases. At the same time, other vegetable crops such as watermelon fields and tomatoes must be avoided or used as front hoe. Because summer cabbage cabbage growth period is short, fast growth, but also must pay attention to more decomposed organic fertilizer, in order to improve the soil permeability and maintain water retention capacity. Third, timely sowing, a reasonable close planting If the heat-tolerant summer cabbage Chinese cabbage varieties are weak in winter, sowing prematurely may cause premature boring and small bulbs; the sowing date cannot reach the goal of increasing yield and efficiency. Therefore, in Shandong Province, it can be sowed in stages from May to July. The ridge can be drilled and drilled to determine the seedling spacing. Generally 3300 ~ 3500 per mu is appropriate. Fourth, strengthen and prevent pests and diseases In summer, high temperature and rain or drought, it is easy to cause summer rot cabbage cabbage to infect soft rot and virus diseases. In addition, locusts, cabbage caterpillars, diamondback moth, and leafhoppers are also more serious. In recent years, snail damage has also occurred in some areas. Therefore, prevention and treatment of pests are critical. After sowing seedlings, they should pay close attention to the harm of pests, usually 4 to 5 days after the spraying, in order to reduce the resistance of insect pests, they should alternately choose drugs or compound drugs. To prevent the occurrence of viral diseases, watering and seedling protection should be strengthened, and weeding and weeding should be promptly eliminated to cut off the transmission route. In order to avoid aphids and high temperatures, silver-gray shading nets are used to cover alfalfa seedlings. Colonization when the seedlings grow to 5 to 6 true leaves is also a very effective way to prevent viral diseases. During the nodule period, attention should be paid to the prevention of soft rot in cabbage. It is possible to spray neophytin 400 times and net 600 times. It must be sprayed on the petiole and stem to remove the diseased plants. Most heartburn diseases are caused by high temperature and drought, and fertilizer and water management should be strengthened. Five, fertilizer and water to promote early, timely harvest In order to achieve high yields and high efficiency, it is imperative that water should be attacked and attacked in a timely manner. Top dressing should be done a few times. Usually in the seedling stage and after the seedlings, irrigation and fertilization several. In the rosette stage and early ball stage, topdressing bio-organic fertilizer with appropriate amount of high-nitrogen compound fertilizer on both sides of the furrows, and appropriate ridge cultivation, watering 1 or 2 times. Harvesting and marketing can be done in batches and can be harvested by well-knotted plants.
Structure and composition: It is made of 100% Cotton Gauze with X-rays or without X-rays after degreasing, bleaching, drying, processing, cutting and folding.
Product performance: Clean, soft, non-toxic, odorless, non-fluorescent, no oil spots, no mold spots or debris adhesion, and has good water absorption performance.
Model specifications: Sterile type. The color is mainly white, supplemented by blue and green. Specifications are divided into 5 * 5-4 / 6/8/12, 7.5 * 7.5-4 / 6/8/12, 10 * 10-4 / 6/8/12, 10 * 20-4 / 6/8/12 , 5 * 70/3 * 100/5 * 100, etc .; with or without light, can be folded according to different requirements.
Packing: Each 1-10 pieces are packed with medical paper / paper / paper bags, medical blister packaging, single chip microcomputer, then, 20 bags / 50 bags / 100 bags of white card or gray card box, and outer layer is 5 layers of double corrugated kraft paper box.
Scope of application: It is used for medical institutions to clean clinically, protect wounds and absorb exudate from the body. It is used for surgery and wound care.
Sterile Medical Gauze Swabs Sterile Gauze Sponges,Sterile Medical Gauze Swabs,Sterile Surgical Gauze Compresses,Sterile Medical Cotton Gauze Swabs Shaoxing Gangfeng Hospital Products Co.,Ltd. , https://www.gangfenggauze.com