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The "Asparagus Prince F1" nursery and high-yielding cultivation technique "Asparagus Prince F1" is the latest hybrid variety cultivated by the China Asparagus Research Center. It won the second prize of the People's Republic of China for Scientific and Technological Progress in 2002 and is one of the most widely used varieties at present. . In major asparagus producing areas such as Shandong, Henan and Hebei, bamboo shooters began replacing their original “UC800â€, “UC157F2†and other conventional and second-generation species with “Asparagus Prince F1â€. "Asparagus Prince F1" has several significant advantages: 1. Fast growth, one year harvest, spring seeding, summer transplanting, and about 400 kilograms in the spring of the second year; 2. Strong sprouting, yield High, more than 20 single plants sprout in the first year, about 60 sprouts after three years, 45 shoots can be harvested, yield over 1700 kilograms per mu, more than 40% higher than “UC800†and “UC157F2â€; 3, good quality There are many fine bamboo shoots, coarse and even, no hollow deformity, 93% of first-class shoots; 4. High rate of male plants, strong resistance to diseases, the first branch point is more than 60cm, the field male strain rate is more than 86%, disease resistance Increased sex by 46%. First, nursery asparagus can be nursed in spring, summer and autumn, and can be transplanted in spring, summer and autumn. The advantage of spring seedlings is that they have a long seedling age, they can be transplanted in the summer and can be harvested in the second year; (summer and autumn seedlings, due to short growing time, need to be harvested one year later); while conventional varieties and two For example, “UC800†and “UC157F2†are used for seed production. The seedlings were planted in the same year and transplanted in the second year. The harvest can be harvested only in the third year. (A), nursery: generally in the Gregorian calendar in March and late Yangshuo nursery. If the use of film coverage can be advanced to the middle or late February; can also use the greenhouse after the Spring Festival in early spring nursery, seedling age 50 to 60 days can be transplanted. According to the bamboo shooter's mouthwash, summer and autumn can also raise seedlings. (b), seed treatment: Asparagus seed skin thick and hard, external wax difficult to absorb water, must be soaked before sowing germination. Before soaking, the seeds were rinsed with fresh water, rinsed, and then sterilized with 50% carbendazim 300 times for 12 hours. Then, in the spring, soak in warm water of 30~35 °C for 2~3 days (soaking in summer and autumn with cold well water). After pouring the water, cover it with a wet towel, rinse the seeds twice a day with water to avoid Boring, so that the seeds can be sown after 10% of the dew. (3) Seeding: Choose fertile sandy loam soil, use 20 m2 seedlings for every 50 g of seedlings, fill the bottom water first, cross the line with 10 cm spacing, single seeds are sown in the center, cover 2 cm thick Sift the fine soil. 1 Seedlings in early spring: After sowing, both small arches (90-120 cm in width and 50 cm in height) are covered, and a small amount of phoxim granules and baits are sprayed on the surface to prevent larvae and other underground pests. The temperature inside the arch is controlled at 25~30°C during the day and 15~18°C during the night. When the temperature exceeds 32°C, the membrane ventilation and seedlings at both ends must be opened in time. When the seedlings grow more than three stems (about 60 days after unearthing), they can be transplanted. 2 summer nursery: As the summer temperature is relatively high, in addition to soaking seeds with cold well water, the seedlings must also be fully watered. After the seeds are planted, they should be timely covered with soil, covered with wet grass or wheat straw, and wet grass with cold water. Found wheat grass and the ground dry, timely water moisturizing. Remove the cover in the evening after emergence. (3) Seedlings in the autumn: Soaking, seeding is the same as summer. In order to allow the seedlings to extend their growth time later, the small arch shelters used in the early spring can be used for protection before the temperature is lowered, so as to extend the growth period and cultivate large seedlings to ensure safe wintering. Second, transplanting and planting Asparagus can be transplanted from March to September, but it is better to transplant plants from June to July, because the field management time is short, and the harvest can be harvested in the next year. The seedlings of the previous year can also be transplanted. This kind of seedling is large and has a long seedling age, which is higher than the spring seedling yield. 1 Digging and ditching: In the deep-leveling ground, the north and south direction, according to 180 cm line spacing to lay a straight line, along the straight line to dig planting ditch, groove width 40 cm, ditch depth 40 to 50 cm. 2 Fertilization and trenching: fill 5,000 square meters of soil fertiliser per 667 square meters (1 mu) and 50 kg of compound fertilizer into the trench. 3 seedlings are planted and planted: Before the seedlings are planted, the water is poured firstly and then the water is split into squares with shovels along the rows of shoots and shoots. The seedlings are lifted out with soil, and the smallest one of the seedlings faces north and is planted at a spacing of 25 cm. In the ditch, the shoot bulbs of the bamboo shoots are 13 cm below the ground level, and then the watering is naturally collapsed, and after the water seeps, the soil is loosened at the right time. Third, summer management In order to accelerate the growth of asparagus, from mid-July to mid-August, 50 kg of fertilizer per 667 square meters topdressing, chase after timely watering, pest management during the rainy season. Fourth, the Qingyuan Garden will pour water once in November. After a few days, it will dry off the stems on the ground and clear the garden. V. Harvesting in the spring of the second year, ridge height 30 cm, ridge width 40 to 45 cm, harvested before sprouting. The harvest period is 30 days in the first year, 60 days in the second year, and 90 to 100 days after three years. With the increase of the age of bamboo shoots, the harvest period is appropriately extended. But don't covet high prices and over-harvesting.
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