Cultivation of Potato seedlings in Nutrition Bowl in greenhouse in early Spring
Under the long-term traditional cultivation mode, the phenomenon of high yield and low efficiency of potato is prominent. Therefore, in recent years, a new method of raising seedlings in nutrition bowl and planting in plastic greenhouse has appeared, and good economic benefits have been obtained.
1. The cultivated varieties should choose the varieties with early maturity, low temperature tolerance and relatively high yield, such as Dongnong 303 potato with stable quality and growth period of about 90 days.
two。 Soil preparation and fertilization in the autumn before the cultivation of early spring potato, 6000 kg of mature farm manure and 20 kg of potassium sulfate were applied per mu in the greenhouse. Ridge by 50 centimeters wide. One month before planting, the plastic film was fastened in the greenhouse to bake the ground. The shed is covered with plastic film and small arch shed.
3. After the rotten and diseased seed potatoes were removed by germination and colonization, the selected seed potatoes were placed in a basket on a farm hot Kang or in an environment of 25 ℃. When the seed potato buds grow to about 1 cm, continue to sprout in a light environment of 12: 15 ℃. After the seed potato sprouts turn purple, cut the buds and sow them in a 10 cm × 10 cm nutrition bowl. Mix the nutritious soil in the bowl with 3 parts of garden soil and 1 part of rotten farm manure (sifted). After planting, a small amount of water was irrigated and covered with plastic film to keep the soil temperature 16-22 ℃. The seedlings can be planted when they grow to 2 leaves and 1 heart. One week before planting, the lowest temperature could be reduced to 2 ℃. If there is a phenomenon of overgrowth in the seedling stage, 0.1% dwarf can be sprayed. When the ground temperature of 10 cm in the greenhouse is stable above 2 ℃, it will be planted. After planting, the temperature in the small arch shed should be controlled within the range of 5-25 ℃, and the air should be released in time when it reaches 28 ℃.
4. In the later stage, there is basically no drought and no watering during the potato growth period. Generally, water is watered once when planting, and 15 kg per mu of urea is applied with water per mu, and 15 kg of urea and potassium sulfate are applied per mu when budding. If the population overgrowth phenomenon occurs during the growing period, 90% paclobutrazol can be sprayed with 10 grams of paclobutrazol per mu to 20 kilograms of water. Stop using pesticides one month before harvest.
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Technology of seaweed fertilizer for potato
The application of seaweed fertilizer in planting industry has attracted wide attention of growers. Especially in vegetables, the performance is excellent. So, how to use seaweed fertilizer to grow potatoes? What is the effect after using it? Taking Gymboree seaweed fertilizer, the leader of bacterial fertilizer, as an example, this paper briefly introduces its application in potato. Gymboree seaweed microbial fertilizer is imported from Australia, using the latest international microbial engineering technology and technology, separated and purified from marine organisms, and developed by Seiko.
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"five attentions" in the introduction of Potato
Most of the potato seeds are transferred back from other places, which is actually an act of introduction. When adjusting and purchasing seeds, it is necessary to understand the factors such as latitude, altitude and climatic conditions of potato seed stem producing area, and correctly select the producing area and variety according to the introduction law of potato. Pay attention to latitude and altitude. It is easy to succeed when introduced from high altitude to low altitude and from high latitude to low latitude. The reason is that the temperature is lower during the growth of potato at high altitude and high latitude, and the virus of potato seed stem is lighter and degrades slowly, which leads to planting at low altitude and low latitude.
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