How can you grow carrots with high yield?

How can you grow carrots with high yield? Please advise to plant carrots to pay attention to the following points in order to achieve high yield: 1. Choose a variety. Choose red carrots with good root shape, good quality and strong growth potential. The commonly used varieties are summer five-inch, Yantai three-inch, five-inch carrot, Japanese black five-inch ginseng and other excellent local varieties and so on. two。 Select parcels. The sandy loam with deep soil layer, loose and breathable and capable of drainage and irrigation should be selected in order to form a good commercial fleshy root. The suitable previous crops of carrots are cucumbers, tomatoes, onions, garlic and so on. In addition, wheat is also a suitable previous crop. Carrots can also be intercropped with tall stalk crops such as corn to shade the sun and reduce the field temperature, which is beneficial to the growth of fleshy roots. 3. Prepare the soil and fertilize. Carrot fleshy roots deep into the soil, the king soil should be turned more than 30 cm deep, combined with deep turning and drying the soil for 10 or 15 days. Carrots have high yield and large fertilizer demand, combined with 3000 ~ 5000 kg of rotten organic fertilizer, 7.5 ~ 10 kg of available nitrogen fertilizer, 50 kg of plant ash or 20 kg of potassium sulfate. The base fertilizer should be uniform to avoid forked roots and so on. 4. Straighten out the border. After turning the soil deeply, fine rake the soil, level it, and make a bed. Carrots can be cultivated in flat beds or high ridges, which can be determined according to local light, precipitation and other conditions. In high ridge cultivation, the ridge spacing is about 20 cm, the ridge width is 50 cm 70 cm, and the height is 10 cm 15 cm. 5. Fine sowing. The germination rate of carrot seeds is low and it is difficult to emerge, so seed treatment should be carried out before sowing. Select new seeds, dry them for 1-2 days, rub to remove the bristles, soak the seeds for 4-8 hours before sowing, remove water and mix them with fine sand or plant ash to sow. The sowing depth is 1 to 1.5 cm. Carrots usually emerge 6-10 days after sowing. When sowing, mix a small amount (2%) of pakchoi seeds, cabbage seedlings can protect carrots from the sun and heat. 6. Weeding between seedlings. 1: 2 true leaf time seedlings, plant spacing 3 cm. Then shallow hoe between rows, weeding to preserve soil moisture, to promote the growth of seedlings. The plant spacing of small and medium-sized varieties was 10 cm, and that of large varieties was 13-15 cm, and intertilling and weeding were carried out. Carrot seedlings are prone to grass shortage, in addition to ploughing weeds, herbicides can also be used. 7. Water properly. Carrots should be watered for 2 or 3 times during germination period. Moist and soft soil is beneficial to seed germination and complete seedling preservation. Pre-and post-control in seedling stage. After the "pin fixing period", the head thickness of the fleshy root is about the same as that of the finger, which is the fastest growing period of the fleshy root, so it should be watered in time to keep the soil moist. If the water supply is insufficient, it is easy to cork the xylem of fleshy roots and increase the number of lateral roots; drought in the early stage and excessive watering in the later stage will cause fleshy roots to crack and reduce the quality of products. Stop watering half a month before harvest. 8. Prevent diseases and insects. The main diseases of carrots are black spot, black rot and soft rot. 75% chlorothalonil or 70% mancozeb can be sprayed every 7 to 10 days for 2 times. The main pest is that carrot root line can be sprayed with 40% dimethoate 1000 times. Click for more radish planting techniques click to get more vegetable planting techniques