Asparagus seedling breeding method

(2) Construction of nursery: The suitable nurseries in the northern region are as follows. 1 Yangshuo: The impotence introduced here is the improved wind barrier. When building the impotence, first build the wall, then wind the barrier, cover the film, the film can also cover the grass, cover the night cover, cover the film a week before sowing to improve the ground temperature. 2 small arch shed: small arch shed is a small plastic shed with a small volume and simple structure. It is bent into an arch frame with bamboo or wooden sticks, and covered with a plastic film. The brackets for the sheds should be tough, one for every 50-60 cm, and the two ends should be fastened, and then the brackets should be tied in series with the ropes. After covering the film, it should be pressed with dirt to prevent the wind from scraping off the film. The top of the arch shed can also be covered with grass rafts to increase the ground temperature. Linyi Fertilizer Network Copyright

(3) Preparation of culture soil: Preparation of culture soil is the basis for cultivating strong asparagus seedlings. The nutrient soil must have good rational and chemical properties. The preparation method is as follows: 6 parts of fertile soil (sieving), organic fertilizer (fertilizer, cattle and horse manure, etc.) 4 parts, plus dry chicken manure or dry manure 15-25 kg, compound fertilizer 1-1.5 kg / m3, stir well spread in the Yangshuo or arch shed, thickness 14 cm, flat kneading surface, ready for seeding. Linyi Fertilizer Network Copyright

(4) Making a nutrition or nutrition bag: The nutrition or nutrition bag is a cylindrical soil column with a height of 10-12 cm and a diameter of 8-10 cm, or a soil bag. There is a 1 cm square seeding hole in the upper center of the raft. Nutritional cockroaches are generally processed using a masher. The nutrient soil used should be carefully prepared. The method is: simmering beef and horse manure: fat soil = 3:7, mixing and sieving, adding water to adjust humidity, dry and wet standards to hold the group in hand, and landing is scattered. The nutrition bag is made of a waste paper to make a cylindrical paper tube of the same size as the nutrient bowl, and the bottle is filled with the prepared nutrient soil. Linyi Fertilizer Network Copyright

(5) Seed treatment method: The seed coat of asparagus is thick and hard, and it takes a long time to absorb the water. Therefore, the seed must be treated as necessary before sowing to improve the germination rate and germination potential of the seed. The treatment methods of seeds generally include the following: 1 2-3 days of sun drying (2-3 cm on shed cloth, 2-3 times a day, even 2 to 3 days in the sun) 2 rinse to remove impurities, go to sputum, go Insect species. Before the winter, the sand is hidden until the seed is inserted. Before the winter, choose high dryness, dig a deep pit of about 50 cm in the sunny place, and then pile a layer of sand on the ground. The sand should have a certain humidity. The depth of the seed should be no less than 20 cm. After the spring, it will be cut out and the seeds will be sieved out. It can be inserted, and since the seeds absorb enough water, they emerge quickly. Soaked in warm water. Without the seeds of the sand, soak the seeds with 45-50 °C warm water before sowing. After the water temperature drops to room temperature, soak for 2-3 days, change the water 2-3 times a day, then remove the seeds and put them in the box. Linyi Fertilizer Network Copyright

(6) germination: the seed after soaking seeds is wrapped with clean gauze, germination is carried out under the condition of 25-30 °C, and it should be washed 1-2 times with warm water every day to wash away the secretions on the seeds to prevent the stagnation and mildew. When 10%-15% of the seeds are shattered, they can be sown. If it cannot be broadcast immediately, the seeds should be placed in a cool, ventilated place to prevent the buds from growing too long and knocking off when planting. Linyi Fertilizer Network Copyright

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