1. Processing after planting potatoes: After replanting for 40 days according to the requirement of sweet potato planting and cutting plan, the seed potatoes will be collected once in a warm and windless weather. Slightly dry and damp in the warm sun, and select according to the requirements of the bed. Good seed potatoes should have a straight, smooth appearance with a single weight of 150 to 250 grams. The selected potato pieces were sterilized in a 0.2% carbendazim or thiophanate-methyl solution for 20-25 minutes. At the same time, the internal nematode was removed and the appearance of the potato pieces floating in the water could not be discriminated. The soaked potato pieces are removed, dried, and transported into the greenhouse for warming up and ready to go to bed. We provide wide range of herb tea cut, like echinacea tea, nettle leaf tea, dandelion root tea, valerian root tea and red raspberry leaf tea. We can provide blend herbal tea according to formula of customer and we also provide formula according to needs of customers. As one stop shop store of natural ingredients, tea bags like pyramid tea bag and string tea bag can be processed too. Private label is acceptable. Herb Tea Cut,Echinacea Tea,Nettle Leaf Tea,Dandelion Root YT(Xi'an) Biochem Co., Ltd. , https://www.ytnutra.com
2. Arrangement of ramming and electric heating lines: The greenhouse structure of sweet potato nursery is the same as that of ordinary melon vegetable breeding greenhouses. The temperature of the decal membrane was increased 7 to 10 days before the seed potato went to bed and bedding. The width of the greenhouse is about 1.2 meters. It is made from the north to the south. It is 10 to 15 centimeters deep and 25 to 30 centimeters wide. After the water-soluble solution, the electric heating wire is laid in a serpentine shape with an interval of 8 to 10 cm. The power supply and the thermostat are exposed at both ends of the heating wire. A 1-2cm sand layer is laid on the electric heating line to isolate the seed potatoes and contact the electric heating line.
3. Seed Potato Discharge: The seed potato is placed on the southern tip of the loquat, and the potato block is placed obliquely at 45 to 50 degrees from the ground. The seed potatoes turned upward toward the stem, staggered between the front and rear, and pressed the length of the front 2/3. Effluence of potato chips at the height of the surface of the raspberry remains uneven, in order to ensure that the emergence of neat and consistent. After the chips have been cooked, sprinkle the sorghum into the sand and cover it with a cover of 2 to 3 cm.
4, management (1), humidity: sweet potato bed with a watering can watering, prevent flooding flood destruction and smooth formation. The amount of water to penetrate the sand layer, connected to the surface, to keep the wet potato block is limited. Prevent excessive water volume, causing the lower layer to become too wet, and smash the seed potatoes. Bed surface top soil to see dry see wet, usually 5 to 7 days watering once, depending on the circumstances. Watering was stopped 1 to 2 days before picking to prevent infection of the seedlings. (2), temperature: Seed potatoes go to bed germination about 7-8 days. It takes about 10 days to grow young shoots. During this period of time, it is better to maintain a bed temperature of 35-36°C, and over 37°C will inhibit germination. High temperature is not only conducive to germination of seed potatoes, but also conducive to the healing of some wounds to prevent disease. After the seedlings were unearthed, the energization time was reduced. The temperature at the closed tuyere was gradually reduced to 20-25°C during the day and 16°C at night. Open the plastic film before picking the seedlings. The temperature drops to 20°C or slightly lower to practice seedlings and promote seedling robustness. (3) Seedling promotion and control: The seedlings are excavated to collect the seedlings for 25 to 30 days, mainly through the adjustment of water, temperature, and gas to promote the control, reduce the room temperature, reduce the water supply, and ventilate the ventilation to inhibit excessive growth and promote robustness. After harvesting seedlings, the nutrient of seed potatoes has been consumed to a large extent. Appropriate amounts of fertilizer and water should be added. When the seedlings are 4 cm high, they are topped with topdressing water once. The method is to first spray the seedbed with water, and then use 3% urea solution or 5% ammonium sulfate liquid pouring, and then rinse with water to continue insulation and temperature increase, so that the bed soil absolute moisture content maintained at 13% ~ 15%, temperature 30 °C about. When the seedling height reaches 20 centimeters, it is timely to practice seedlings and picking seedlings.