What are the characteristics of greenhouse leek cultivation? Greenhouse leek is a vegetable production project with low labor and low investment. The life span of leek can last for more than ten years. As long as scientific water and fertilizer management and prevention of pests and diseases are carried out, its yield and economic benefits are very considerable.
1 Selection of varieties
At present, the main varieties planted in Kezuozhong Banner include Malian, Shovel and Xueyuwang. These varieties have the advantages of low temperature resistance, high yield, good quality and wide leaf width, and are well received by people.
2 Sowing date and seeding rate
Greenhouse leek seedlings are transplanted and live broadcast. Seedling transplanting amaranth is of good quality, high yield and good efficiency. Its sowing period is in the late April of Tongliao area. 4.5g seed is planted per square meter, and more than 70% of the germination rate is 3kg. The live broadcast was planted in May and June after the winter and spring vegetables were pulled, and 6g seeds were planted per square meter of seedlings, and the seeding amount per acre was 4kg.
3 Soil preparation and fertilization
Before the sowing, the nursery field is sprinkled with fermented fine agricultural fertilizer 6m per mu, 30kg of compound fertilizer, and turned to the ground after application, finely smashed, simmered, and smashed by 1m, so that the manure is fully mixed. For transplanting or direct seeding in the greenhouse, 8 m of fermented agricultural fertilizer per acre and 60 kg of compound fertilizer.
4 transplant or live broadcast
The seedling transplanting was carried out in August, and the live broadcast was carried out after the vegetable vegetables in the greenhouse were pulled. When transplanting, 6 rows per planting, the hole spacing is 6~7cm; after the seedlings, the loose leaves can be cut off, leaving only 4~5cm pseudo stems. 3 to 5 strains of strong seedlings per plant, 5-7 strains of weak seedlings, and watering the soil after planting. The live broadcast is to open 6 trenches, 7~10cm deep, the bottom of the ditch should be flat, first watering the ditch, sowing after water seepage, cover soil 1~1.5cm. Keep the soil moist after sowing, pay attention to the prevention and control of underground pests such as cockroaches and timely remove the weeds. It can also be sprayed with herbicides such as “Di Le An†or “Weeding Pass†before or after transplanting.
5 cover film insulation
Cover the shed film in the first ten days of September to prevent frost, but the cover film does not need to be tightly sealed at the beginning, and it is lifted in front of the shed to facilitate ventilation. After entering the frost period, as the temperature drops, it gradually tightens. When the temperature in the shed is below 10 °C, it is necessary to cover the quilt or the straw curtain in time. After the freezing to the ground, when the minimum temperature in the shed reaches 2~3 °C, the small arch shed with a height of 0.6 m is insulated in the raft.
6 Pre-harvest management
When the soil is dry before the shed film, the water can be poured once, and the urea is 10~15kg per acre with water. When the amaranth grows to a height of 10cm, apply the phoxim insecticide to prevent mites (25g per extended rice, 12kg per acre, spray or apply to water). When the leeks grow to 20cm, use them promptly. Cypermethrin or phoxim or chlorpyrifos sprays water on the leek to prevent heartworms. In the future, the insecticide should be sprayed once every 15 days, and it should be used alternately.
7 Harvest management
After each harvest, it is necessary to spray 1000 times of liquid in a timely manner to seal the wound and prevent the occurrence of gray mold. When the shed temperature reaches 25 °C or more in the future, it is necessary to timely ventilate and cool the water to prevent the occurrence of gray mold and disease. The minimum temperature at night cannot be lower than 2 °C. The relative humidity in the shed should be controlled below 70%. The water should be filled once every 7~10d before and after cutting 1 leeks, and 10~15kg of urea per acre with water. The second knife can be harvested every 25~35d. 2~3 knives can be cut before the Spring Festival, and 3~4kg can be harvested per square meter.
The above is the whole content of greenhouse leeks cultivation technology, I hope to help the vegetable farmers who have planted leeks, more exciting content, you can continue to pay attention to Hui Nong network!
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