1. Germination period: Germination from the sprouts on the tuber to the emergence of the seedlings is the germination period of the potato. The growth of the germination period is dominated by the growth of the underground main stem, which is the basis for the potato roots and tubers, guaranteeing the robust growth of the stems and leaves at the later stage, and also the basis for the production. The nutrients and water needed for tuber germination are mainly provided by the seed potato itself. Therefore, for larger seeded potato pieces, we often say that the mother fat is strong. 2. Seedling period: Generally 20-25 days from unearthing seedlings to budding. About half moon unearthed on the ground stems formed 6-8 leaves for the early seedling stage. After that, the growth of stems and leaves soared. After the leaves on the main stem differentiated to 12-16 pieces, the terminal buds entered the bud stage. When the buds appeared on the ground, the tops of the underground stems began to inflate. This stage was the later stage of the seedling stage. . 3, potato organ formation: can be divided into three periods. (1) Tuber formation period: From bud emergence to flowering to tuber formation period, the number of tubers is also determined during this period. During the period from flower buds to flowering, tubers continue to expand. (2) Tuber formation: from the beginning of flowering to the end of flowering, it is a period of rapid growth of tuber volume and weight. At this time, photosynthesis is very strong. The requirement for water and nutrients is also the most period of life, generally after an anther 15 About a day, tubers expanded fastest, and about half of the production was completed during this period. (3) Tuber formation: At the end of flowering and fruiting, the stems and leaves grow slowly and even, and the lower leaves begin to yellow, which means that the tubers enter the final stage of formation. This period is centered on accumulated starch. Although the tuber volume no longer increases, starch, protein and ash continue to increase, resulting in increased weight. 4. Dormancy period: The length of the dormancy period varies from species to species, with a long dormancy period of up to 3 months and a short dormancy period of about 1 to 2 months. Different breeds not only differ in length of dormancy, but also dormancy intensity is different. Most breeds have a maximum dormancy intensity within 20 days after maturity, and dormancy is not easy to break. The shorter the dormancy period, the more intolerant the storage of tubers, the longer the dormancy period, the more resistant the tubers to storage. Ip Video Intercom,Ip Intercom System,Ip Video Intercom System,Ip Door Entry System Zhuhai Mingke Electronics Technology Co., Ltd , https://www.zhmkdz-electronics.com