How to manage cowpea open field cultivation in spring

1. Checking and replenishing seedlings

For live broadcasters, check seedlings in time after all seedlings emerge (3-7 days after emergence). If missing seedlings are found, replenish seedlings in time. Seedling supplementation should be carried out on a sunny day at dusk or on a cloudy day. After supplementation, root water should be poured in time.

2. Thinning and setting seedlings

The thinning should be carried out in time, and weak seedlings, diseased seedlings, and insect seedlings should be removed during thinning. 2 to 3 seedlings should be left in each hole.

3. Build a frame to attract vines

When the plant grows with 5 to 6 leaves, it can be erected. Use 2 to 2.5 meters long bamboo poles to build a "human" frame, insert one in each hole, and insert the bamboo poles obliquely at a distance of 10 to 15 cm from the base of the plant. 15-20 cm in the soil, put a bamboo pole at the intersection about 1.2 meters above the ground, and tie it with a rope as a beam, which is good for ventilation and light and easy for picking. Put the vines on the shelf in time after setting up the vines. The vines should be selected after 10 o'clock in the morning on a sunny day (to avoid trauma and disease). The main vines are wound on the racks in a counterclockwise direction to make the plant stems grow along the stents, generally 2~ 3 times, let it grow naturally in the future.

4. Wipe bud topping

Wipe off the lateral buds and branches under the first inflorescence in the early stage of growth, remove the top growth point in the mid-growth period (when the main vine grows to the top of the shelf), remove old, diseased, and residual leaves in time to reduce nutrient consumption, improve ventilation and light transmission, and promote flowering result.

5. Fertilizer and water management

The guidelines for fertilization are "less application before flowering, more application after flowering, and reapplication during pod setting". Generally, no fertilizer is applied before flowering. After the first inflorescence is in the pod, apply 10-15 kg of compound fertilizer per mu every 7-10 days for a total of 3 to 4 times. Fertilizer application can be carried out in a hole, that is, dig a fertilizer hole for every 4 plants before arranging, apply fertilizer into the hole when applying fertilizer, then pour in water, or dissolve the fertilizer and pour it into the fertilizer hole . In addition, combined with spraying, use a mixture of 0.3% urea and 0.3% potassium dihydrogen phosphate for foliar top dressing.

The general principle of watering:

"Water the pods without watering the flowers". After the seedlings are returned to the pods, the water must be strictly controlled. After the pods are set (the pods are 2 to 3 cm long), start sprinkling. In the future, you should gradually increase the number of sprinkles and the amount of water each time, and always stick to the ground. Moist. In the dry season, pay attention to sweeping away water in the field to avoid falling flowers and pods in the later period.

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