1. The cultivator's planting time is relatively weak at the seedling stage, and the middle cultivating operation is mainly based on weeding. The second shovel or the second shovel should be used. After spring returning to spring and after each cutting, one cultivator was used to break the soil compaction. The cultivator is generally combined with topdressing operations. 2. Fertilization and fertilization are important measures to increase the yield of alfalfa. The fertilization methods include base fertilizer, seed fertilizer, and top dressing during growth period. The base fertilizer is mainly farmyard manure, and phosphorus fertilizer with longer fertilizer effect period can be added. The application amount of farmyard fertilizer is generally about 3,000 kilograms per mu. Fertilizer is applied fertilizer at the time of sowing, and generally 40-60 kg of superphosphate is applied as seed fertilizer. Top dressing is usually carried out after spring returning to spring, branching period, budding stage, or after each castration. The top dressing methods include spraying, spraying and foliar spraying. 3. Irrigation and Drainage Drainage is a deep-rooted plant with a well-developed root system that can absorb deep soil moisture, so it is more tolerant to drought. At the same time, alfalfa is a plant that requires more water, and its need for water is higher than that of grasses. Floods that are not resistant to flooding are not suitable for growth in lowland and high groundwater levels. In the course of growing up, it will cause rot and a lot of death. Therefore, it is necessary to pay attention to flood resistance in rainy season. 4. Field weeding (1) Farming measures to control weeds. 1 Deeply plowing the land before sowing and bury the surface grass seeds so that they cannot be excavated. 2 advance the ground, soil preparation. Let the seeds of surface weeds germinate in advance, and then perform a rotary tilling and hoeing before the alfalfa sowing to kill the germinating weeds. 3 Adjust the sowing date. Appropriate late sowing in autumn, when the weeds are in the seedling or young plant stage, they are frozen before winter. 4 seeding sowing, manual weeding. (2) Chemicals control weeds. When herbicides are grown in large areas, herbicides can be used to eliminate weeds. Herbicides currently used for stem and leaf treatment include: Pusit, bean Xerox, bentazone, broad-leaved earthworm, net catch, stable kill, and cover grass (a mixture of stearic acid and glyphosate can be refined) , grass and other grams. 5. Pest control After the insect pests are harmed by pests and diseases, they often cause stems and leaves yellow, or lesions, leaves incomplete or even fallen leaves, poor growth, reduce the amount of grass production, quality deterioration, shorten the useful life, resulting in very Big loss. The pests that are harmful to earthworms include aphids, armyworms, latent leaves, beet armyworms, thrips, and blind stink bugs. Prevention and control of aphids, leaf miners, blind apes, and thrips can be sprayed with 40% dimethoate emulsion, 1000-1500-fold, 3000-5000-fold, 1500-4000-fold, and 500-1000-fold. The prevention of armyworm can be used pyrethroid 3000 ~ 5000 times spray control. The control of Spodoptera exigua can be sprayed with 1000-fold nets of 5% wormworm, scorpion light, or larvae.