Cowpea has a wide adaptability to soil, but the yield and quality of cowpea can reach the best level in the fertile soil with deep soil layer, loose and breathable and convenient drainage and irrigation. Because such soil can better meet the demand for water and nutrients during the growth of cowpea, and avoid the obstruction of soil drought or barren to the development of cowpea. At the same time, soil pH value also has a certain impact on the development of cowpea, which is more suitable for planting in acidic soil. 1、 What kind of soil is better for planting cowpeas 1. Loose and breathable: too sticky and airtight soil will not only hinder the development of cowpea roots and rhizobia, but also cause root injury or disease death. The root of cowpea is short and its regeneration ability is weak, so it needs to be planted in soft soil.
2. Acid soil: cowpea is best able to grow in neutral acid soil. Because the acidity and alkalinity of soil will affect the efficiency of nutrient absorption and utilization of cowpea, the pH value needs to be maintained between 6.2-7 in order to achieve high yield.
3. Convenient drainage and irrigation: cowpea has certain requirements for water, and the water content in the soil needs to be determined according to the growth of cowpea. When the soil is relatively dry, the amount of watering needs to be increased, and ponding needs to be discharged in time. Only in this way can cowpea grow and develop better. 2、 What kind of fertilizer is better for planting cowpea 1. Base fertilizer: the base fertilizer of cowpea should be mainly rotten organic farmyard fertilizer. At the same time, ternary compound fertilizer and calcium superphosphate should be used to assist farmyard fertilizer. Organic fertilizer has sufficient nutrients and chemical fertilizer has a fast onset rate, which can learn from each other and better provide nutrients for the growth of cowpea.
2. Topdressing: on the basis of applying sufficient base fertilizer, it is also necessary to carry out reasonable Topdressing on cowpea to promote its growth and increase yield. Especially in the period of stem and leaf growth, flowering and pod setting, three fertilizers of nitrogen, phosphorus and potassium are emphatically applied, and the proportion of element fertilizer is adjusted according to different periods. （ChongJiangDouYongShenMeTuBiJiaoHao）