Sweet nursery Note - the peak fertilizer industry

1, note that the temperature-sensitive varieties: sweet potato sprouting ability varies widely, there are a lot of factors, including differences in sensitivity to temperature varieties, some varieties still normal at the time of seedbed germination temperature is low, high and low temperature impact is relatively small, such as Xushu 22 belong to this species. But more varieties showed significant temperature-sensitive characteristics, when the soil temperature is low delay germination, seedling Xushu later than one week to 22 days, while in the soil temperature is high while the germination capacity Seeding difference is small, there is no indicator reflects the difference between this ability, only lessons in the production practice, select the appropriate time seeding according to species characteristics, in addition to frost seed, infected with the virus, too wet storage pits also affect seed emergence ability to select seed as high temperatures healing, skin color bright drink enough water tubers often poor emergence. 2, cooling bed nursery: Take facilitate drainage sunny flat land, dig a wide 10-15 cm deep seedbed, farmyard manure was applied, after mixed evenly into potato, pouring enough water, then with a sprayer to potato Carbendazim and insecticide spraying as a precaution, then covered with earth. After leveling Gai Demo, then stamped with a small shed. 3. seedbed rotten potato production and effects: sweet potato into the seedbed prone to rot in potato late phenomenon, the severity and seed quality, management, climate and so on, harmful potato brown rot after the mucus of the surrounding potato Block adverse effects, emergence low, weak quality seedlings, could easily lead to serious contiguous rot. Rotten potato should be dug by observing sparse soil surface level and potato seedlings to determine the rotten potato depressed position. 4, display methods: sweet potato buds all over the surface, by the influence of hormones, the upper end of the first emergence, if nutrition can keep up with, but also the emergence of the middle and lower. Generally, only a few can sprout buds. Tuber emissions generally flat to the head in the same direction is best to avoid overcrowding potato seedlings. If you want to make full use of space, it can be placed tilted tuber, potato buds crowded, must promptly cut seedlings. 5, accelerate breeding nursery techniques: seedbed potato seedlings grow seedlings should be promptly cut, if not planted into the field at this time, it is necessary to send seedlings were planted into nursery mining, mining nursery density is generally 100-120 plants per square meter, cold weather When transplanting to put up a small shed, the weather is good ventilation should be promptly, to avoid burning seedlings. Usually after a month of growth and harvest per plant nursery seedlings can be cut 3-5 strains. Potato seedlings for farmers to buy, if you are going to plant summer sweet best buy in before the end of April harvest potato seedlings nursery propagation, 500-800 plants per acre to buy to meet the needs, can significantly reduce costs. Nursery seedlings tend to be more robust, it can be used for high yield.