1. The semi-arid semi-arid climate in the alpine zone is the most suitable for growth at a daily average temperature of 15-20 degrees Celsius. High temperature and high humidity adversely affect the growth of alfalfa. The wolfberry has strong adaptability, and it is most suitable for the growth of high topography, flatness, good drainage, deep loose soil, neutral or slightly alkaline soil. Amaranthus is a medium salt-tolerant grass that can be grown in mildly salinized soil (<0.3% soil salinity).
2. The site preparation is mainly to clean the ground (weeding, stubble elimination), loose soil, mixed fertilizer and soil, and smooth the ground to provide a suitable soil environment for earthworm sowing, emergence, growth and development. The arable land must master the soil moisture content, smash the soil, make the soil into fine particles, and ensure that the seedlings are neat and tidy.
3, fertilization of high-yield alfalfa in the production of nutrients, especially nitrogen, calcium and potassium. Rhizobium nodosum can fix free nitrogen in the air and has strong nitrogen fixation ability. Therefore, during the growth and development of earthworms, nitrogen fertilizer is generally not applied. The demand for potassium on earthworms is large, and it takes 10-15 kg of potassium to produce 1 ton of hay. The application amount of superphosphate is generally 50-100 kg/mu. Application before sowing or sowing, one-time application, can also be used as topdressing.
4, sowing (1) choose suitable for local growth of alfalfa varieties, such as the Queen, WL320, WL323 and so on. (2) Seeds should be cleaned, remove impurities, and then dressing with rhizobia, bacteria/seed ratio is 1/10. (3) The sowing time can be planted when the local temperature is above 5 degrees, and can be planted in spring, summer and autumn, but the best sowing period is from August 20 to September 10. (4) Seeding method, can broadcast, broadcast, protect sowing and mixed broadcast. The row spacing for the purpose of producing hay is 20-40 cm, and (5) the sowing amount for the purpose of producing hay is about 1 kg. (6) sowing depth is generally 0.5 -2CM.
5. Field management can grow grass during artificial growth. When grass returns to green in early spring, weeds should be cut and weeding should be carried out immediately after each cutting. Older can use 2,4-DB chemical control. To timely irrigation, pay attention to drainage during the summer high temperature and rainy season, to prevent excessive water caused by rot. Pesticides are controlled by pesticides or harvested in advance. The fundamental prevention and control is the selection of resistant varieties.
6. The first harvest is generally selected at the initial flowering stage (plants have 10% flowering). If the harvested hay is fed to dairy cows and young livestock, it should be harvested at the budding stage. Harvested once every 30-35 days, the last harvest should be carried out at the end of September, leaving 30-40 days of growth time, which is conducive to wintering and high yield in the second year. The drug should be stopped before harvesting for the first half month.
7. Processing and Utilization (1) Dry storage According to different dry storage methods, it can be divided into natural drying method and artificial drying method. The natural drying method is to harvest the fresh alfalfa, drying them in the field, and then bundling and storing them; artificial drying means drying after drying with a drying machine and bundling and storing. Naturally dried wolfberry, with a fragrant green grass taste, good palatability, high digestibility. The shorter the drying time, the higher the protein retention in the grass. (2) Silage, fresh grass is cut into about 2 cm and mixed with corn silage for silage.
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