In the central and southern regions of southern Fujian, the key to potato cultivation in the spring is to provide high quality benefits. The use of plastic greenhouses or greenhouses for planting potatoes can be marketed before and after May Day. It is labor-saving, technically simple, and relatively inexpensive. A good way to increase income. First, select the varieties and seed potatoes In the selection of varieties, it is better to choose the concentration of potato, plant branches, plant type upright, high yield, early maturing varieties, such as the Netherlands 7, the Netherlands 15, Kexin 4, Kexin 13, Beijing Dabai and so on. In the selection of seed potatoes, strict selection of virus-free seed potatoes, as far as possible the use of less breeder breeding varieties, from the reputable seed potato company into the species, preparation of 165 kilograms per acre seed potatoes. Second, the greenhouse is well-prepared Prepare greenhouses and timely rectify the land. The greenhouses should be buckled in advance. Before the old sheds, they should not be Solanaceae and cruciferous crops. It is better to have a well-prepared area before the winter and the latest is to prepare the soil 20 days before planting. For lyrical conditions, advance fleas, then spread 5000 kg of soil miscellaneous fertilizer per acre, deep plowing more than 20 cm using plowing ploughs, and then use high-quality organic fertilizer (including bacterial fertilizer) 100 ~ 200 kg + potassium sulfate compound fertilizer per acre ( 18-7-20) 100 kilograms. Rotate tillage and level land after spreading. Ditch the plant before sowing, spread it with phoxim and then ridge again. Third, seed processing Seed processing was conducted 20 days before sowing, and disinfection, cutting, and germination were performed in accordance with the three procedures. Potassium permanganate was used for disinfection before cutting. Generally, at least one bud eye was cut in each cut, and the weight was about 25 g. After cutting, cut into pieces and dry it with grass and ashes, or use 200 times solution of carbendazim to soak seeds. After cutting, in a warm room, lay 5 cm of fine sandy soil on the bottom, then arrange the shoots with the buds facing upwards, and try to do it. To the Qi Qi is not uniform, after the pendulum is covered with 5 cm thick sand, according to the above method to arrange the second row, the third layer of potato block. The last layer is covered with 5 cm thick sand covered with grasshoppers. Keeping the temperature at 15°C～25°C, the moisture of the germinating bed soil is suitable to be broken into pieces by hand. Germination was performed under low light conditions for 20 days. When the potato shoots are 1 to 2 cm long, the potato pieces are removed and moved to a room where there is scattered light at 10°C to 15°C, and the bottom is preferably covered with a layer of wet sand. With the help of low temperature and scattered light to control the growth of the terminal buds, it promotes the germination of lateral buds. Then wait for sowing. Fourth, science sowing When the shed is stable at 10°C and the temperature is 8°C, it can be planted. If the weather is too bad, it will affect the greenhouse temperature prematurely. If it is too late, it will not play the role of cultivating the greenhouse earlier. Sowing with high ridges, increased ventilation, filming after sowing, if necessary, cover the inner membrane or build a small shed, in order to increase the soil temperature and promote the early emergence of potatoes. The spacing is about 60 cm and the spacing is about 18 cm. V. Field Management When the seedlings arched the top film of the soil, the seedlings were planted and the holes were sealed with wet soil to prevent air leakage. After the potato seedlings were flushed, water was poured one time to promote seedling growth. From sowing to emergence about 20 days, maintain the daytime 16 °C ~ 20 °C, night 12 °C ~ 15 °C. In the stage of potato development, the ventilation and cooling are the main factors to ensure that the temperature in the shed is maintained at 16°C to 18°C. When the temperature reaches 20°C, the ventilation of the greenhouse film is started at 9:00 a.m. and closed at about 3 o'clock in the afternoon. In April, when the outside air temperature is above 20°C during the day and 12°C or more during the night, the day-night membrane removal ventilation is carried out. The film is still covered when the temperature is low. During the growth period, bamboo shoots are often used to shake the shed film so that the water droplets fall on the film and increase the light transmittance of the film. After the emergence, the planting period, and the capping stage, the watering is performed once. The potato block is poured with two waters during the expansion period. Capped water and expanded water, depending on the growth potential, can be fertilized with 15 to 20 kilograms of fertilizer per acre with high potassium. Do not flood the ridges to keep the soil aerated and promote the expansion of the tubers. The roots were sprayed with natural brassin for 1 time. When the plants sprouted, they were uncovered and covered with soil. If the plant has a phenomenon of leggy, you can manually control the prosperous: When the first flowering, remove the blobs horizontally with bamboo rafts, and when the second flowering, use bamboo rafts to knock out the blobs up and down, while breaking the upper main stem growth point, you can also spray Apply 1-2 times paclobutrazol. In addition, potassium dihydrogen phosphate 50 grams + 50 grams of white sugar + 100 grams of calcium granules + 50 grams of zein zinc + 15 kilograms of water can be used to promote tuber enlargement. Six, timely harvest The potato growing period in the spring greenhouse is relatively short. Generally, the potato tuber diameter of 5 to 6 cm in the middle and early May must be harvested in time. In order to reduce the loss of moisture and nutrients in the commodity, it should be stored away from light. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Silicone Cleanser Brush,Cleansing Silicone Brush,Best Silicone Cleansing Brush,Silicone Facial Cleansing Brush Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizonscares.com