How to grow alfalfa
In the country's returning farmland to forests and grasslands, we must adjust measures to local conditions and comprehensively plan and promote the cultivation of high-quality pasture in large areas in order to accelerate the development of the grass industry and ensure the stable production of animal husbandry. Alfalfa as a high-yield and high-quality forage grass has the characteristics of high nutritional value and strong adaptability. It is one of the preferred forage grasses, and its mastery of its planting techniques is extremely important for animal husbandry production. The main technical links are as follows: 1. Site preparation requires deep ploughing, squeezing, smoothing, and sowing, and grasping the suitable tillage period. Generally, the water content of the clay loam is 18% - 20%, and the silt loam is 20% - At 30%, it is the best period for suitable tillage. In the production, often 10-20 cm soil layers are disintegrated by hand into small groups of soil. This time is suitable for site preparation. Combined with deep ploughing and applying base fertilizer, generally, Mushi farmyard fertilizer is 4000--5000 kg, DAP is 10 kg, or ordinary phosphate fertilizer is 50 kg. 2, seed 2.1 seed quality. Seed purity and germination require more than 80%. Seed selection and germination rate determination before sowing. 2.2 Soil conditions. When soil moisture is not good, the soil is repressed before sowing. 2.3 Seeding period. All plantings can be planted throughout the year, but early sowing is rooted deep and drought-resistant, and the second year is back to early morning; late sowing is shallow and unfavorable. Spring sowing (in mid-April) and autumn sowing (mid-July to early August) are generally preferred. Summer should be sown after rain. 2.4 Seeding method. There are several methods for spreading, drilling, mixing, and inter-casting. Generally, the depth of seeding is the same, and the emergence is neat and tidy, which facilitates field management. 2.5 Seeding rate and sowing depth. When alfalfa is sowed, 1 kg seeds per acre are sown with 0.75 kg per acre. It is best to plant seeds with rhizobia after seed dressing. The depth of seedling sown should not exceed 3 cm. After sowing, it should be lightly or lightly applied. 3, field management 3.1 weeding. For the seedlings in the year of sowing, weeding should be done 1-2 times in time. 3.2 Depression. After the soil is thawed in early spring, the alfalfa is carried out before the alfalfa begins to sprout, which can protect the alfalfa, increase the temperature of the soil, promote the turn green, and eliminate the early germinating weeds. After each castration, due to the bare ground, soil moisture evaporates strongly. Deep squats on old age, cut roots and necks, promote its renewal. 3.3 Irrigation. The frequency of irrigation and the amount of irrigation water in each area are flexibly controlled according to the growth conditions, the temperature level, and the degree of drought. It is not advisable to irrigate in the vicinity of castration, and it is not appropriate to irrigate the reclaimed grass when it is less than 10 cm. 3.4 Pest control. First, strengthen the cultivation and management, enhance its resistance to disease; In the prevention and control of pesticides, for sucking mouthparts of aphids use sucking contact insecticides, chewing mouthpart pests use stomach poisons, it is best to use organophosphate kill Insecticides or other high-efficiency, low-toxic pesticides, usage and dosage refer to the instructions. 4, harvest 4.1 appropriate harvest. In general, it is the best period for the first flowering period, when the yield is high and the quality of the grass is also good. Harvest 2 - 3 times a year. 4.2 Remaining height. In the first year of use, the height of stay is 3 - 5 cm, and the height of adult stay is about 3 cm. 4.3 Seed production. It is better to collect seeds for the third and fourth years of growth, and the highest yield is for the first year of the year. China Agricultural Network Editor