First, fertilization and soil preparation. In winter greenhouses, lentils are cultivated for a long period of growth and require a large amount of fertilizer. Base fertilizer should be reused. It can apply 100 kg of phosphate fertilizer, 50 kg of potassium fertilizer, and 2500 kg of high-quality heap fertilizer. Combine with fertilization and plunge 30cm deep and smooth the land.
Second, ridge planting film. Single ridges were planted on high ridges with a ridge width of 40cm, a ridge width of 40cm, and a ridge height of 15cm. 150 cm wide plastic film is used to implement the "gutter cover groove" method cover film (ie, a film cover 2 ridge 1 ditch), after the cover film, a row of haricot beans is planted on the ridge.
Third, sowing and planting. In order to ensure the supply of spring, seedlings should be sown 5 days before and after the equinox. Use pots and water to cut and then sow in order to plant the soil. Seedlings of 3 to 4 true leaves were transplanted in 1 row, 1 meter, 3 piers, and 1 pier. Not too close. Otherwise, the seedlings will grow in length and fall seriously, or they will not suffer scabs.
Fourth, strengthen management. After sowing, the temperature should be maintained at 25-30°C before emergence to promote seedling emergence. Post-emergence seedbed temperature of 20 ~ 25 °C is appropriate to prevent emergence of tall seedlings. After the true leaves are unfolded, the temperature is maintained at 20°C. 5 to 6 days before planting, use 18 to 20 °C low temperature hardening seedlings. After planting the seedlings, the greenhouse temperature is controlled at 20 to 25°C during the day and 12 to 15°C at night, which cannot be lower than 10°C. In severe winters, if it is cloudy or severely cold, it should be warmed.
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