How to grow garlic? How long does it take from planting to harvesting?

1. Choose high-quality garlic as an agricultural proverb to say, "Good seedlings grow well and good seedlings yield high". Therefore, when planting garlic, we must first determine the purpose of production. For example, if the main purpose of planting garlic is to produce garlic, then we should choose white garlic with large garlic head, obvious petals and fat garlic petals as seeds. In the production of garlic bolts, purple garlic with good garlic and fat petals should be used as seeds, and seeds are not allowed to be used indiscriminately when planting garlic. 2. It is not suitable for planting garlic in continuous cropping land. Garlic fields need to be deeply ploughed and loosened, and organic fertilizer and phosphorus and potassium fertilizer should be applied. 667m2 should be applied with 1500 ~ 2000 kg farmyard manure as base fertilizer, with 30 ~ 50 kg phosphate fertilizer and 0/5 ~ 20 kg potassium fertilizer. 3. The suitable temperature for garlic bulb expansion is 20 ~ 25℃. When the temperature is higher than 26℃, garlic goes into dormancy. When the sunshine hours are less than 13h, the new leaves can continue to differentiate, but they cannot form lateral buds on the scales. Therefore, garlic planting must be timed strictly according to the location and variety. In production, farmers often say: "Mid-Autumn Festival is not at home, Dragon Boat Festival is not on the ground", and the saying of spring garlic planting is "Spring garlic is not long enough, but it is long enough". It is clearly pointed out that autumn garlic should be sown from the autumnal equinox to the cold dew, and spring garlic should begin to thaw in the depth of 5 cm in the soil and should be sown around mid-March. 4. Reasonable close planting is beneficial to the overall and individual growth of garlic. In general, the density of white garlic is 16cm× 10cm, and the total yield is more than 25% higher than that of the control. Garlic is big, garlic cloves are fat. The row spacing of garlic with red skin is 10cm×8cm. 5. Strengthen management The whole growth cycle of garlic is divided into germination stage, seedling stage, scale bud differentiation stage, scale bud expansion stage and dormancy stage. Each growth period should be grasped according to the ring, but the scale bud expansion period is the key point of management. It is necessary to strengthen the supply of fertilizer and water, topdressing urea 667m2 ~ 10 ~ 15kg, watering every 3 ~ 5 days to keep the surface dry, and spraying 600 times of potassium dihydrogen phosphate on the leaves during this period to supplement phosphorus and potassium fertilizer. Sowing garlic in autumn also needs to be well managed after autumn. Cover firewood and other things before winter, uncover the plastic film in time in spring and water the green water. Strengthen intertillage in mid-March, protect soil moisture, raise ground temperature, and spray 1000 times dimethoate to control ground maggots.