(I) Land preparation The land that has been deep-lying and ridiculed in the autumn should be tamed and suppressed in the spring. For plots that cannot be completed in time for autumn, replenishment should be carried out at 14 cm in early spring. For regions with severe drought and windy conditions, repression and lifting should be conducted before sowing to facilitate emergence. (b) Selection 1. Variety selection. Should choose to pass Heilongjiang Province or national certification (including Heilongjiang Province) of the species, try to choose the last few years stable production, disease resistance, resistance and good varieties, the number of new varieties for the first year should not be too much. Should choose to pass Heilongjiang Province or the country to approve the promotion of varieties. 2. Seed quality. If single seed technology is adopted, the seed germination rate should be higher than 95%. 3. Seed treatment. Test shoots: A germination test was conducted 15 days before sowing and the seeding rate was determined based on the seed bud rate. (III) Fertilization 1. Base fertilizer. Can apply organic fertilizer 30 tons/ha. 2. Seed fertilizer. Phosphate fertilizers are generally used, and 75 kg of diammonium phosphate and 30 kg of potassium sulfate are applied per hectare, and 20-30 kg of urea can be added. 3. Top dressing. Should be in the 7 to 8 leaves of small bell-mouth fertilizer, apply 200-300 kg of urea per hectare, topdressing urea to apply to the strain side of 9 to 10 cm, the depth of 5 to 10 cm is better. (D) sowing 1. Sowing time. It is usually sown in late April to early May. 2. Seeding rate and planting density. Use 25-30 kg per hectare. 3. Make up water sowing. The middle and western part of Heilongjiang Province should be sowed according to the soil moisture conditions by sowing water, and make up water once. 4. Crackdown after sowing. Immediately after sowing, the live plots should be repressed. The replenishment plots should be promptly suppressed on the second day after sowing. (5) Pre-field management 1. Weeding. Before sowing, the herbicide should be sprayed in time according to soil moisture. 2. Check field replanting plants. Check germination before emergence. 3. Seedling shovel and deep loose. After the emergence of seedlings, shovels are used to increase temperature. The conditions are deep and loose, and other plants are deep and loose after jointing. 4. Seedlings, Dingmiao. 3 to 4 leaves must be seedlings. Objective To evaluate the methods and the effects of an airway management nursing team in clinical practice Catheter Mounts,Airway Adapter,Irma Airway Adapter,Capnostat Airway Adapter Zhejiang Haisheng Medical Device Co., Ltd , https://www.hisernmedical.com