Asparagus New Technology to Promote Crop Cultivation
Asparagus, also known as Asparagus, is a perennial herb of the genus Asparagus in the Liliaceae, which has been cultivated for many years and has benefited for many years. Since China introduced it in the 1970s, its development momentum has been rapid and it is estimated that the annual output has reached more than 100,000 tons. From the late 1980s to the early 1990s, as the medicinal value of asparagus was continuously confirmed by new research results, asparagus as a nutritious and health-preserving valuable vegetable with both good taste and medicinal taste has been popular in the international market. decline. According to incomplete statistics, the area planted in China in the late 1990s has reached about 700,000 mu, and the harvested area is about 550,000 mu, which is the largest in the world. After the agricultural science and technology edition of the newspaper published Jiahui Breeding Co., Ltd.'s report on the cultivation of green asparagus in the reclamation, a readership letter was consulted with the relevant planting technology, and special experts from the Agriculture Bureau of the district were asked to reply. ---- Assembler Assisting cultivation of asparagus off-season cultivation is based on the growth and development of asparagus, creating a new technology that adapts to the growth and development of the asparagus in its dormant period, and promotes production through the cultivation of false plants. The main points of operation are: to cultivate a robust root of asparagus. Because the accumulation of nutrients within the storage root is more sufficient, the higher the yield that results in cultivation. Generally, the root culture of 1 to 3 years after planting should be adopted in the cultivation of false plants. The green asparagus variety with early maturity, multiple stems, and rapid growth should be used, and the management work after nursery and planting should be well grasped. To nurture strong seedlings in order to shorten the cultivation time of roots and to seize the high efficiency of the unit area, it is advisable to use two methods to cultivate strong seedlings. The first is the greenhouse nursery. In early January, a seedling bed was planted in a solar greenhouse. The length of the greenhouse was determined by the length of the greenhouse. 1m wide, dig 20cm deep, covered with a layer of cow dung or ground corn stalk, covered with a layer of 1cm thick fine soil. Then laid geothermal lines, specifications for dv20810 type, voltage 220 volts, current 4 amps, power 800 watts, length 100 meters. 10 cm to 12 cm apart; spread two or three centimeters above the fine soil mixed with organic manure and level it. Next, fill soil with 80% bio-organic fertilizer and topsoil into an 8x8 cm nutrient bowl (a 0.5 cm diameter hole in the bottom of the raft). The soil surface is 2 cm below the carcass. Then, the nutrients are neatly discharged into the seedbed, and the gaps between the carcasses are filled with fine soil and fully watered. The processed asparagus seeds are then sown in the middle of the nutrient bowl and covered with a layer of 1 cm. Thick nutritious soil. Finally, cover the plastic mulch on the bed. During the daytime, the temperature in the shed is maintained between 25°C and 30°C. During the night, the geothermal heating is used to maintain the temperature between 15°C and 18°C ​​to promote emergence. The seedlings are about 30 cm tall, and there are 5 small stems on the ground. When the fleshy root reaches 10-15, they can be transplanted and planted. The second is direct sowing of seedlings in Daejeon. In mid-March, in Daejeon, a 60 cm to 80 cm line spacing is used to open the ditch. The ditch depth is 30 cm and the width is 20 cm. The top soil mixed with bio-organic fertilizer (250 kg per mu) is then backfilled into the ditch. Drain the bottom of the ditch and pour water so that the ditch is about 3 cm below the ground level. When the situation is appropriate, open a small ditch in the ditch, sow the treated asparagus seeds in a small ditch, sow 2 seeds every 20 cm, sow depth two or three centimeters, and press gently to make the seeds close to the soil. contact. Then, cover the trench with a plastic film. After the emergence of seedlings should be promptly put in heat to prevent hot seedlings. In late April, the seedlings should be planted in time to promote growth. Planting transplanted seedlings In late April, asparagus seedlings grown in greenhouses can be transplanted and planted in Daejeon. The requirements for row spacing, ditching, and fertilization are the same as those for direct seedlings in Daejeon. Planting depth 6 cm - 8 cm. Post-planting management In order to cultivate healthy roots, field management must be strengthened both in the live broadcast of Daejeon and in transplanted asparagus. Focus on four areas. One is weeding and weeding. In the early stage, more cultivating and less watering are needed to increase the temperature and promote growth and development. During the entire growth period, field weeds should be promptly removed so as not to affect the growth of asparagus. The second is to top-dress fertilizer in time and reapply autumn water and fertilizer. After entering late May, we must adhere to a small number of top dressing principles, supplement nitrogen fertilizer and potash fertilizer, and water in case of drought. Apply 50 kg of NPK fertilizer per acre before and after the beginning of autumn, and re-inject it with autumn water. After the end of September, water and fertilizer should be controlled to avoid new stems and promote the storage of root nutrients. Third, graded soil and increased stem diameter. At the beginning of June, the soil is cultivated once in the roots of the plant, and the height of the soil is 3 cm - 5 cm and the width is 10 cm - 15 cm; in combination with the application of the fall fertilizer, the soil is applied for the second time, and the amount of soil is the same as the first time to promote the underground scale buds. Stout growth, increase the yield of cultivation. The fourth is to use the asparagus field to renew the roots of the plants that are robust, have many scale buds and are large, dig them before planting, and place them in a cool, low-temperature place until they are ready for planting.