Breeding methods. The tubers are propagated. After tubers are harvested in autumn and winter, 20-25 grams of large tubers are selected for sowing or sand preparation. It is also possible to dig out the appropriate size of tubers after thawing in spring soil. sowing. In the spring. Hole sowing or ditching. Plant spacing is 50 cm square. The planting hole is planted after loosening the soil and applying base fertilizer, but the base fertilizer should not be too much. Sowing depth of about 10 cm. After sowing, the soil is covered with holes. Field management. About one month after sowing, seedlings emerged. Appropriate topdressing and watering after Qimiao. Then cultivating and weeding, and cultivating soil into low ridges, when it is not too dry, it is no longer necessary to water, until the tubers are inflated and then watered, with the principle of “see dry see wetâ€. If the stems and leaves grow too lush, it is advisable to pick the top and spray the fruit to consolidate the body and promote the enlargement of the tuber. Jerusalem artichoke is rare for pests and diseases. It is possible to use no pesticides. In extremely dry conditions, aphids may occur and water spray may be eliminated. Spraying plant cellular immune factors can increase the stress resistance of plants, and can cause viral DNA to cleave and apoptotic. Strong immune function, induces interferon and active interleukin, inhibits residual virus replication, and promotes positive energy ecological growth of plants. nucleic acid extractor specifically adsorbs nucleic acid molecules in samples through magnetic beads, and then adsorbs transfers magnetic beads through the movement of magnetic rods in different holes, so as to achieve the purpose of purifying nucleic acid molecules. Former 1B48 nucleic acid extractor instrument can automatically extract nucleic acid from whole blood, bacteria, plasmid, virus, serum free and plant samples, widely used in scientific research, CDC, food safety, clinic testing, forensic medicine, and other fields. Nucleic Acid Extrator,Dna Nucleic Acid Extrator,Nucleic Acid Extrator For Lab,Automated Nucleic Acid Extrator Nanjing Superyears Gene Technology Co., Ltd. , https://www.superyearsglobal.com