1, choose a strong disease resistance varieties. The selection of disease-resistant varieties is an effective measure to prevent degradation. At the same time, we must pay attention to a sound breed breeding system and system, set up seed-retention bases in high mountains, and combine good seed selection with anti-virus protection in order to maintain the productivity of elite varieties and extend their useful lives. 2, autumn and late sowing seeds. Autumn sowing and late sowing seeding, so that the period of potato is in a cool climate, plant growth is robust, enhanced disease resistance, and is not conducive to the reproduction of the virus and infection, can reduce the degradation. 3, remove the virus: (1) select superior plants to expand reproduction. In the field where the virus infection is not yet severe, select strong and excellent individuals to breed seed and eliminate diseased plants. (2) Use raw potatoes for planting. Potato viruses rarely invade pollen, eggs, and embryos, so that through sexual reproduction, the virus accumulated in asexual generation can be eliminated to produce virus-free seeds, seedlings, and raw potatoes to prevent degradation. (3) Non-toxic seed potato cultured from shoot tip. The shoot apical meristem is basically virus-free. Therefore, virus-free plants and tubers can be obtained through stem apex tissue culture, and this non-toxic seed tuber can be used for production, which can exclude most viruses and prevent it. Degradation. (4) Improve cultivation techniques and storage conditions. Appropriate cultivation measures such as cultivation of sandy loam, high fertilizer and water, proper close planting, strengthening of field management, prevention and control of aphids, and timely harvest can all promote robust growth of plants, enhance anti-degradation ability, reduce field virus, and prevent degradation. During storage, the potato block should be avoided by high temperature or low-temperature freezing damage, water loss and shrinkage, premature budding, loss of nutrients, pests and diseases, etc. to prevent the old decay of seed potatoes, reduce the viability, and cause degradation. Dried Ginger Yunnan Origin,Dried Ginger Whole,Air Dried Ginger,Yunnan Origin Of Dried Ginger Weishan Yuanxing Walnuts Co.,Ltd. , https://www.walnutsxxy.com