Planting technology of green kernel black bean

Green kernel black bean is black seed of leguminous plant soybean, black skin, green kernel, white seed hilum, round seed, known as "black pearl", nutritional value is very high, with anti-aging, eyesight black hair, kidney spleen, longevity and other effects, products sell well in Japan, South Korea and Southeast Asia and supply exceeds demand, economic benefits are very considerable, let's take a look at green kernel black bean planting technology!

variety characteristics

Qingren black bean is a medium mature variety, tall plant, strong branching ability, developed root system, steady growth, very spectacular, disease resistance, lodging resistance. The pod bearing capacity is strong, the pod is large, 2~3 seeds per pod, 4 pods account for more than 10%, the fresh bean 100-seed weight is 82~88 grams, the dry bean 100-seed weight is 42~44 grams, the yield is high, generally the dry bean yield per mu is about 200 kg, the high yield is more than 250 kg, and the fresh edamame yield per mu is more than 900 kg. The seeds are black and shiny, the kernels are green and crystal clear, especially when eaten as fresh edamame, which tastes better and has a unique flavor.

timely sowing

1. Land selection and sowing: Green kernel black bean planting should choose plots with medium soil fertility or above without continuous cropping and continuous cropping. 3000 kg of high-quality agricultural fertilizer and 10~15 kg of compound fertilizer are applied per mu as base fertilizer. Spring sowing should be carried out in the first and middle of April, and the ground temperature of 5 cm below the ground should be 18℃. In summer, rape can also be sown after harvest in the Yangtze River Basin. In the wheat area north of the Yangtze River, sowing should be carried out immediately after wheat harvest, and sowing should be completed before the middle of June.

2. Sowing density: Qingren black bean plant is tall and suitable for sparse sowing. Medium fertility field, sowing 11000 ~ 13000 plants per mu in spring, high fertility field sowing about 10000 plants. Summer sowing 12,000 ~ 15,000 plants, sowing late, poor soil fertility plot should increase the sowing density, 18,000 ~ 20,000 plants per mu. Generally, the row spacing is 30~40 cm, the plant spacing is 20~25 cm, 2~3 seeds are sown in each hole, and the seed is 4~5 kg.

field management

1. Transplanting seedlings to make up for deficiencies: When planting green kernel black beans, the plots generally lacking seedlings can be transplanted locally. The soil should be buried tightly during transplanting. If the soil humidity is small, watering should be added to ensure the survival rate. In order to make the transplanted seedlings grow rapidly, proper dressing fertilizer should be applied after transplanting to promote seedling uniformity and seedling strength. If the seedlings are seriously lacking, they should be directly replanted.

2. Intertillage and weeding: Qingren Black Bean seedlings at 2 single leaves spreading time, and the first compound leaf is fully extended. Weak plants, diseased plants and mixed plants should be eliminated while healthy plants should be retained. The first intertill is generally carried out when the first compound leaf appears and the cotyledons are not dropped, and the second intertill is carried out when the seedling height is about 20 cm and the leaves are not sealed. The first time should be shallow, the second time a little deeper, combined with topdressing and soil cultivation.

3. Timely topdressing: Qingren black beans should be combined with ploughing mu to apply 20~30 kg of three-element compound fertilizer and 2000 kg of farm manure as base fertilizer. After emergence, check seedlings in time and plant seedlings. When the plant height is about 20 cm, nitrogen, phosphorus and potassium compound fertilizer shall be applied 15 kg per mu, and the amount of topdressing shall be increased if no base fertilizer is applied for summer sowing.

4. Chemical control treatment: When the plant height of Qingren Black Bean exceeds 50 cm, spray 15% paclobutrazol powder 2000 times solution for 1~2 times to prevent excessive growth. Apply urea 10kg per mu at the early stage of flowering, and spray ammonium molybdate concentrated solution with concentration of 0.01%~0.05% to reduce pod shedding, accelerate bean expansion and improve yield.

5. Disease prevention and pest control: Qingren black beans in the flowering and pod stage, when more than 30% of the leaves appear disease spots, use 50% carbendazim WP or 40% carbendazim colloid, 1.5 kg per hectare, spray 500 kg of water, can control gray spot disease. Aphids and red spiders can be controlled by spraying 1000~1500 ml of 35% saidan emulsifiable concentrate or 1500 g of 10% bifenthrin or 150 ml of 1.8% abamectin preparation on 500 kg of water per hectare.