Detailed explanation of key points for early spring ground bean cultivation techniques
Pre-sowing preparation: irrigate before winter to build good soil moisture for early spring sowing. Prepare 6 kg of "American ground bean" high-quality seed per mu, ultra-thin plastic film (film width 70 cm), apply 3000 kg of organic fertilizer as base fertilizer, 10 kg of urea, 8 kg of diammonium phosphate, and 10 kg of potassium chloride. Sowing: after the ground thaws in early spring, make beds and cover with film. Bed width 50...
Pre-sowing preparation: irrigate before winter to build good soil moisture for early spring sowing. Prepare 6 kg of "American ground bean" high-quality seed per mu, ultra-thin plastic film (film width 70 cm), apply 3000 kg of organic fertilizer as base fertilizer, 10 kg of urea, 8 kg of diammonium phosphate, and 10 kg of potassium chloride.
Sowing: after the ground thaws in early spring, make beds and cover with film. Bed width 50 cm, bed spacing 50 cm. Every 3 m, draw a horizontal line with soil and press the film down firmly. Sow when the temperature remains stable at 10°C for 5 consecutive days.
The sowing method is: use a hole punch to make holes in the film-covered bed and sow (dibbling). Sowing depth about 3 cm, hole spacing 30 cm, 3-4 seeds per hole, sow two rows per bed, row spacing 33 cm. After sowing, the average row spacing is 50 cm (of which: wide row 67 cm, narrow row 33 cm).
Field management: observe the field conditions at all times. When the plastic film and seedlings are about to touch, break the film to release the seedlings, and be careful to press the film edges around the seedlings firmly. After windy and rainy weather, observe carefully. If there is accumulated water on the film, drain it. Damaged film should be promptly covered with soil or re-covered with film. When the bean seedlings grow to 3-4 true leaves, water for the first time, and apply 12 kg of urea per mu with the water. After that, do not water for the time being (continuous watering makes it difficult to set pods). When the young pods grow to 3-5 cm, water for the second time, and water for the third time after 10-15 days. In late April, use 10% imidacloprid wettable powder at 2000-3000 times dilution, or 0.3% Sophora flavescens botanical insecticide at 500-1000 times dilution, or 18% wennjing oil or beta-cypermethrin at 2000-3000 times dilution to control aphids.