Sowing management method of Tiannanxing

Nanxing, also known as Nanxing, as a medicine with high economic value, more and more are planted, but planting management has a great impact on the yield of Nanxing, so it is necessary to be familiar with the characteristics of Nanxing in order to have targeted management. Nanxing can propagate by tuber or seed, but seed propagation takes a long time and is difficult to manage, so tuber propagation is generally used in Hebei Province. First, the sowing time of spring sowing tubers is generally planted from Qingming Festival to Grain Rain, that is, in the first and middle of April, if the temperature is on the low side, it can also be postponed to late April. Those who sow seeds and harvest tubers can be sown after the wheat harvest, that is, in the last ten days of June. Second, the growing environment Nanxing likes moist, loose, fertile soil and environment. Artificial cultivation should be intercropped with long-stalk crops, or choose shady forest, green, valley more humid environment; the soil should be loose, fertile, well-drained sandy or semi-sandy land. Low-lying and poorly drained plots are not suitable for planting. If the soil quality of the plot planted with Nanxing is heavy or the soil consolidation is serious, it must be improved. After ploughing, 1 kg of ciba clay essence per mu and 20 jin of fine sandy soil are evenly applied to the surface, which can effectively improve the soil structure, make the soil form aggregate structure, solve the problems of consolidation and heavy soil quality, and provide a good soil environment for the high yield of Nanxing. Third, the root system of Nanxing is weak, but a lot of nutrients are needed for growth, so the soil fertility is required to be sufficient, using organic fertilizer 2 square per mu, medium nitrogen, high phosphorus and high potassium potassium sulfate compound fertilizer, 80m / mu, Youli boron-zinc fertilizer 200g (or Ciba boron-zinc fertilizer 150g) supplement boron and zinc fertilizer, Ruilu 100g supplementary iron fertilizer, spread organic fertilizer all over the field, compound fertilizer, boron-zinc fertilizer and Ruilu mix evenly and then spread. And turn the ground. Fourth, the treatment of seeds or tubers Nanxing should be treated regardless of whether it is planted seeds or tubers, in order to prevent the seeds or tubers from carrying viruses, blight, Fusarium wilt and other germs. If it is a seed, use the method of coating, using Gaoqiao + Yiwei + Weifu, every 20ml + 20g Yiwei + 20ml Weifu package 8Mel 10 jin seeds, then sow them in the shade and dry. If it is a tuber, you should first use the method of soaking seeds with chemicals after overwintering. First, dry the tubers of Nanxing for 2 days to promote the ripening of the tubers, and then use Ruimiaoqing to treat them. Every 8ml Rimiaoqing mixed 15 jin of water, put the tubers into the medicine solution, soak them for 1 minute and remove them in a cool place to dry. Then use Gaoqiao + Weifu to cover the seed blocks. Every 20ml + 40ml Weifu water 2jin can pack 100kg Nanxing seed blocks. After coating, dry in a cool place before sowing. Fifth, after sowing the ground, open the ditch according to the row spacing of 25ml 30cm and the ditch depth of 4cm. After opening the ditch, in order to prevent the soil from carrying bacteria and preventing the problem of continuous cropping, the method of spraying ditch is adopted, with extra sharp bacteria agent, 45g per mu of land, diluted twice a day in advance, 40ml 50jin of water, spray this planting ditch, and then put Nanxing seed, cover the soil.