It is advisable to use fertilization for layering, thick soil, loose soil, high organic matter content of sandy loam or slightly acidic soil, and no more than two years of no legume crops. If the soil pH is below 5.5, lime neutralization should be applied. Acidic to facilitate the growth of organic cowpeas. After deep-turning the ground, apply 1500 kg of organic fertilizer and soil fertilizer per acre, apply 30-50 kg of phosphate fertilizer, 10 kg of compound fertilizer, and 15 kg of potash fertilizer. After mixing well, make high sorghum. Each stalk is 1.8-2.0 m wide. Ditch), the height is 20-25 cm, and the ditch is 30 cm deep. Sowing after one or two days of sun exposure. Seasonal selection of organic kidney beans can be sown twice a year, and autumn sowing is carried out from mid-July to early August (spring sowing in late February to early April). The specific sowing period should take into account the fact that it does not grow during the frost period and does not bloom or pod during the hottest period. Because organic cowpea is a thermophilic plant, it is not resistant to frost and is not resistant to heat. The growth temperature is 13-25 degrees Celsius, 20 degrees is the best, and the optimum temperature for flowering pods is 15-25 degrees Celsius. When the temperature is at 13 degrees, the night temperature stops at 8 degrees, the temperature is 18 degrees, the flowering and harvesting delay is 13 degrees at night, if the flowering period encounters a low temperature of 15 degrees Celsius, the number of seed pods and each pod The number of grains decreased. At higher temperatures, growth and development were promoted. The number of flower buds and the number of flowering increased accordingly, and the flowering period was relatively advanced. However, if it exceeded 30 degrees Celsius, it was prone to fall and fall, and the yield decreased. In general, spring sowing organic cowpeas are most afraid of encountering repeated low-temperature or rainy weather, which is easy to cause rotten and dead seedlings. If conditions permit, it is best to cover the planting. Sowing and seedlings The surface of organic cowpea seeds is often gray mold. It can be soaked with methyl thiophanate 500-1000 times for 15 minutes before sowing. It can prevent the occurrence of gray mold in seedling stage. Soaking seeds with 1% formalin for 20 minutes before sowing. Reduce the occurrence of anthrax, then rinse with water and sow. It can also be sown with 0.3% of the seed sowing amount. The plant spacing is 30-35 cm, 1-2 seeds per litter, and the amount per mu is used. 2 kg or so. When planting, the soil should not be too deep, otherwise it is not easy to emerge and easy to rot. After sowing, the soil can be watered once or not. The optimum temperature for germination of cowpea seeds is 18-28 degrees Celsius, and the number of germination days is 3-4 days. When the temperature is low, the germination time is relatively extended, but the minimum is not less than 15 degrees Celsius. In addition, it is best to 2-3 days before sowing, which can promote the germination neatness, and also reduce the phenomenon of rotten seeds that are prevented from being sown at low temperature. Fertilizer management Organic cowpea plants are strong when the soil moisture is high, and growth is slow when excessively dry, but when it is too moist, it causes yellowing of the base leaves or plant death, so it is necessary to timely water or drain. The demand for fertilizer increased significantly with flowering and pod formation. After flower bud differentiation, nitrogen promoted plant growth, increased flower count, and more pods. However, if nitrogen fertilizer and water were too much, the stems and leaves were long and the flowers fell. Therefore, the topdressing depends on the growth potential. Generally, after the second pair of true leaves grows, 10% of the manure or 3-5 kg ​​of urea is applied to the water; when the plant starts to grow, the ternary compound fertilizer is used. After the water is diverged, it can be applied once with water. The amount of fertilizer used per mu is 6-9 kg, and the application amount of nitrogen fertilizer is controlled. At the same time, the spring is cold-proof for the cold wave. When the flowering pods begin, the compound fertilizer is applied twice, 12-15 kg each time. The flower bud differentiation of organic cowpea has been started since the seedling stage. It usually begins to differentiate 20-25 days after sowing, but the flowering date is 35-40 days after sowing, and the actual temperature is 700-800 degrees Celsius. Pods (vines of 860-1150 degrees Celsius), flowering period of about 12-19 days (vine species about 25-44 days). Before flowering, the 1500-times solution of the flowering essence of the farmer is used to spray the leaves and the top of the stem, which can promote the flowering and increase the pod formation; the flowering period is 5-25 mg/L b-naphthylacetate spray or 0.3% phosphoric acid. The spraying of hydrogen potassium leaves has a certain effect on preventing falling flowers and pods. Timely harvesting Under normal circumstances, tender pods can be harvested 10-15 days after flowering, and 15-20 days when the temperature is low. When the pods are rounded and flat, the color is changed from green to light green, and the appearance is shiny. period. In general, dwarf organic kidney beans are harvested from harvesting to harvesting, and autumn sowing is about 50-55 days (55-65 days for spring sowing), and the average yield per mu is about 1000 kg. 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