The southern leaves are covered with potato sheds for wintering?

Because the leaves are used for picking tender stems and leaves as products, it is not easy to form roots, and the seed potatoes are difficult to preserve. In the second year, the emergence of seedlings is slow, and it is difficult to seize the market. The method of adopting potato seedlings for wintering and seedling protection has high efficiency, simple technology and easy promotion.

[Selected varieties] It is advisable to use Fushu No. 18 variety with strong resistance and high yield.

[Make seedbed] Use a field with good soil structure, high fertility level, flat land, high dry terrain, and leeward sun to make a seedbed. In the late August, clearing the garden and drying the field, and applying the base fertilizer in the first ten days of September, per acre Commercial organic fertilizer 200~300 kg, potassium sulphate compound fertilizer 10 kg, then deep turn 20~25 cm, according to the width of the car 1.2 m, the height of the car is 20 cm, the width of the compartment is 30 cm, and it is installed in each compartment. 3 hot lines, 40 cm apart, 20 cm on both sides of the car. Fine leveling, so that the soil layer is fine and loose, and the wet and dry is moderate. Use 1 kg of carbendazim WP 1 kg per acre and mix it with fine soil to spread the chamber. The surrounding of the seedbed should be opened well. The depth of the ditch is preferably more than 30 cm, which is good for drainage and humidity reduction.

[Pipe cutting] Planting in mid-September, adopting the method of cutting propagation, using stems and stalks thick, leaves thick, no gas rooting, no pests and diseases, cutting 15 cm, leaving 3, 4 knots, the base is cut into oblique horseshoe shape, The soil is inserted obliquely 2~3 knots, the plant spacing is 18~20 cm, the row spacing is 25 cm, and the soil is tightly soiled after cutting, keeping the soil moist.

[Freshwater and light fertilizer seedlings] 7 to 10 days after cutting, 10 kg of thin human excrement is applied per acre.

[Small water pumping and promoting long] Before the shed, the small water and watering measures are adopted to keep the soil temperature between 80% and 90%, and promote the growth of potato seedlings.

[Combined with cultivating and weeding and topdressing water] 20 days and 30 days after cutting, combined with cultivating and weeding, 1000 kg of thin human excrement and 10 kg of urea plus 2 kg of potassium chloride per acre.

[Topping] When the 5 to 6 leaves of the potato seedlings survive, the heart is picked and the branches are promoted. The branches that grow up later should not be topped, let them grow naturally, increase the photosynthetic capacity and enhance the resistance.

[Cover shed insulation] When the temperature is lower than 10 °C in November, cover the greenhouse film, thoroughly disinfect the seedbed with 50% carbendazim 500 times before the cover shed, and open the shed film when the temperature is higher than 30 °C at noon. Ventilation and ventilation.

[Set of small arch sheds for cold] From December to January of the next year, when the temperature is lower than 5 °C, take a small arch shed in the greenhouse.

[Temperature fill light] When the temperature is lower than 2 °C, the geothermal line will stop at 8:00 on the next day to increase the temperature. When the temperature is lower than -2 °C, the time to open the geothermal line will be longer. :00 to stop at 10:00 the next day. If the weather is long and rainy, use incandescent lamps to supplement the light. The coal stove can also be used to increase the temperature.

[Control water and moisture] After the shed is covered, the water is controlled by a small amount, and the humidity is controlled. The watering should be carried out at noon. Pay special attention to control the humidity. When the humidity is high, it should be ventilated and dehumidified.

[Foliar fertilization] After the spring, spray 1~2 times of foliar fertilizer.

[Potato seedling transplanting] In the second year of March of the second year, the potato vine with thick stems and thick leaves was selected, and 3~4 section of potato vines were cut, and the rooting agent was used for rooting, and the slanting scorpion was inserted into the greenhouse. Water the soil after cutting and keep the soil moist.

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