Leek is one of the most efficient and popular vegetable crops in winter. With the in-depth adjustment of planting structure, high-efficiency agriculture based on facility agriculture has developed rapidly. In recent years, various parts of our country began to try to plant greenhouses. To achieve high yields, we must improve crop yields by selecting suitable varieties, rationally arranging plant spacings, and preventing and controlling pests and diseases and scientific fertilization techniques. Shed leeks can produce 2000-3000 kilograms per acre, yield more than 5,000 yuan. In this article, microbial microbial fertilizer expert Jinbao made a summary of the cultivation technology system of winter leeks:
1. Shed cultivation of leeks and fertilizers
Basal fertilizer should be fully applied. Fertilizers for every square meter of seedbed fermented and rotted and sifted 4,000 kg of farmyard manure and 50 kg of urea as base fertilizer. Top dressing with 30 kg of urea per acre is best. In addition, when the old leeks were cut, further topdressing was performed, adding 40 kg of urea per acre. Basal fertilizer is the root of leeks production, so when using basal fertilizer, it must be ensured that it is used adequately and used reasonably. If the vegetable farmer wants to make full use of the nutrient elements in the basal fertilizer, it is advisable that the vegetable growers use some microbial fertilizers such as dichotomy microbial fertilizers as the base fertilizer, because the microbial fertilizer can increase the utilization efficiency of the basal fertilizer, and the secreted auxin will promote the growth of seedlings. The correct application of bacterial fertilizer can increase the yield of economic crops by 30%, increase the production of field crops by 10%, reduce the amount of chemical fertilizers, reduce production costs, improve soil structure, eliminate soil compaction, improve crop quality, increase commodity rates, and ultimately significantly increase economic efficiency. Green food ideal production material.
2. Shed leeks and leeks root selection
The selection of leeks and seedlings The leeks sown and transplanted in the same year should not be used for greenhouse production. The second year of leeks should be selected for greenhouse cultivation. The growth of greenhouse leeks mainly depends on the storage of nutrients in the rhizomes and fresh stems before winter, and raising the roots of leeks is the key to the high yield of big leeks. The rooting and rooting of the roots can be performed using the gilt rooting agent. At the end of April, after harvesting a dish, we must stop harvesting and carry out cultivator, loose soil, and top dressing in Daejeon. When the ink is applied, the buds are picked and the nutrients accumulated. At this time, we must also combine organic fertilizers and compound fertilizers for nutritional supplementation on the above basis.
3. Shed cultivation in pest control
Adhering to the principle of prevention-oriented and comprehensive prevention and control, the main focus of agricultural prevention and control and supplemented by chemical prevention and control are the main principles of disease prevention and pest management. During the growing period of greenhouse leeks, due to the humidity in the shed, it is prone to gray mold, which can be sprayed with 75% Chlorothalonil 600 times liquid or 72, 2% Prec 800x liquid. The leeks of leeks are harmful and need to be treated with 50% phoxim 1000 times solution every 15 days, 3% punnet 2 kg plus 50 kg sand mixed with fine soil, and 800 times more than 90% crystal trichlorfon. Liquid spray or irrigation can be used alternatively
4. Management of cultivation temperature, harvesting, etc.
The main principles of greenhouse temperature management are as follows: When the outside temperature drops to about 5°C, scaffolding and filming can be carried out. Lai is a cold-tolerant vegetable
Vegetables, the optimum temperature for growth is 14-20 °C, slow growth below 10 °C, and temperatures above 25 °C are prone to injury. Pay attention to avoid wind cooling and cooling. The leek harvesting needs to be determined according to the market conditions, and it is necessary to ensure high yields while ensuring high economic value. Timely harvesting of high market output and good returns. The lower knife part of the harvested leeks lies on a 3-4 cm leaf sheath on the bulb, about 1 cm above the ground. Management details can be consulted: Beijing Huaxia Kangyuan Technology Co., Ltd. telephone toll-free hotline
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