Lotus roots are loved by many people, but do you know the cultivation techniques of lotus root? Spring crickets are usually harvested before the beginning of July, and then they will be planted. Therefore, the spring ripening cultivation technique is the core of the double-season cultivation of the field, and it is also a comprehensive technology. Let's learn together. First, the medium and late varieties are changed into high quality early maturing varieties. The frost-free period is about 240 days. Under natural conditions, although the medium and late-maturing varieties have high yield, they have a long growth period and cannot meet the seasonal requirements of double-season cultivation. To carry out double-season cultivation, it is necessary to use early-maturing varieties (such as Elian No. 1) which are characterized by high yield, high quality, disease resistance, shallow and easy to excavate. It is also possible to use Donghe early glutinous rice, which has less flowering, early knotting, and major sorghum ratio. It has good appearance and good taste, and the plant is short. The average height of the lobes is only 83 cm, and it is resistant to wind and disease. Strong, easy to stabilize and produce high yield. Second, change the heavy application of topdressing for the application of base fertilizer, suitable for topdressing The spring cultivating of early maturing, the growth period is very short, only about 80 days. Therefore, the fertilization should be based on the base fertilizer, accounting for about 70% of the total fertilization amount, and 30% of the topdressing fertilizer. Specific usage: Before the tillage, the manure organic fertilizer is 2000-2500 kg/mu. The kneading fertilizer is applied with ammonium bicarbonate 30 kg/mu, calcium magnesium, phosphate fertilizer 50-75 kg/mu, potassium sulfate 10 kg/mu, zinc sulfate 1.5 kg/mu (zinc deficiency). Topdressing is generally divided into 2 times. The first time in the first leaf-leaf stage, urea is applied at 10 kg/mu; the second time before the lotus leaf is sealed, 45% of ternary compound fertilizer is applied at 20 kg/mu. Lotus root requires a large amount of fertilizer, but excessive application of chemical fertilizer is easy to cause fertilizer damage, which seriously affects growth and yield. Third, change late planting, deep planting for early planting, shallow planting The single-season scorpion is usually planted before and after the Ching Ming Festival. At this time, the axillary bud has been elongated by 5 to 7 cm, and it is easy to hit the bud head during the transplanting process. Tian Hao had strong cold resistance at the germination stage, and was planted at an appropriate time. In the early stage of axillary bud germination, the next species could promote early-onset precocity. Small arch shed cultivation can be advanced to early March; greenhouse cultivation can be advanced until the end of February. The following species generally adopt the flat planting method: first dig a deep 5-7 cm, slightly longer than the scorpion, and then place the seed shovel in the ditch. After planting the stalk, the knot is slightly lifted and the soil is fixed. Under this method, the knots are shallow and easy to excavate. For the thin soil of the paddy field, the oblique planting method should be adopted: the low tail height of the seedling head is inclined to the soil at a dip angle of about 20°, and the other is the same as the flat planting method. Pay attention to the next species to prevent the top of the bud from exposing the soil layer, so as not to cause difficulty in the growth of the main whip, affecting the early onset of lotus root. Fourth, the rehearsing of the è—• è—• è—• è—• è—• è—• Due to the fact that the main scorpion is connected to the scorpion, the growth of the buds may be unbalanced due to the superiority of the apical ridges, resulting in uneven growth in the field, which in turn affects the uniformity of the stalks. Separate seeding between the main and the sub-plants can create a competitive balance between plants and improve uniformity and yield. In the case of the same number of buds (the top buds are 0.5 million per mu), compared with the seedlings, the seed amount is increased, and the yield is decreased. Fifth, change the thin plant to dense planting Early-maturing lotus root has the growth characteristics of early sealing and early crusting. Appropriate increase in seed amount and increase planting density have obvious early maturity effects, which is one of the important measures to improve the early stage yield. 6. Rehabilitation cultivation for protected cultivation Lotus root is a thermophilic crop, and it is very obvious to carry out shed film cultivation and early maturity. The local springs are warmer and warmer. In order to save costs, the farmers use small arch sheds for cultivation. The shed of the small arch shed is 1.1-1.2 meters wide, and the shed is 25-30 cm. The shed is suitable for the north-south direction. The single-row fork of the scaffolding is planted at a distance of 0.8 meters. The planting period and harvesting period of the small arch shed cultivation can be about 15 days earlier than the open field cultivation. In the early stage of management, the seal is mainly used; after the first lobes of the main whip are unfolded, on sunny days, when the temperature exceeds 24 °C, the two ends should be ventilated; when the apical membrane is placed, the film should be uncovered in time to prevent burning; at the end of April Before uncovering the film, do a good job of refining the night. Seven, strengthen field management Strengthen water slurry management. Tianyu is developed from the deep water lotus roots of rivers, rivers, lakes and ponds. Because of its long-term growth in deep-water silt, the lotus roots adapt to a relatively constant temperature environment, and rapid temperature changes are unfavorable to their growth. Therefore, it is better to control the water temperature. Technology can play a role in early precocious puberty. Before the management of the water layer was shallow, medium and deep, the principle was generally 3-5 cm in the early stage, and gradually deepened to 8-10 cm in the middle stage, and generally maintained 4-6 cm in the later stage. In the case of special low (high) temperature weather in production, deep water protection must be applied. Timely eliminate aquatic plants such as Ping and Shui Mian. Aquatic plants such as Ping and Shui Mian not only shading and heat insulation, but also affect the increase of water and soil temperature in the early stage, and the oxygen consumption of fertilizer and fertilizer, affecting the growth of lotus root, should be eliminated in time. The above is the whole content of the spring ripening cultivation technology. Interested farmers can learn more. If you want to learn other cultivation techniques, then come to Hui Nong Internet! 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