Cowpea is fat but not fat, and water and fertilizer management mainly includes three aspects:
First, the base fertilizer is applied and the fertilizer is applied in time.
The second is to increase the application of phosphorus and potassium fertilizer, the appropriate amount of nitrogen fertilizer.
The third is to promote the first and then prevent the long and premature aging. Plant nutrition is the key to increasing inflorescence and pod formation. Adequate base fertilizer can promote root growth and rhizobial activity, and more root nodules, so that the early stems grow vigorously and differentiate more flower buds, laying a foundation for high yield. The base fertilizer is generally applied with 2000 to 3000 kg of high-quality organic fertilizer per acre , 25 to 30 kg of superphosphate , and 50 kg of ash . Before the cowpeas were flowering and pod-forming, the requirements for water and fertilizer conditions were not high, and the management was dominated by control. The base fertilizer is sufficient, generally no longer topdressing, and when the weather is dry, it can be properly watered. If there is too much water and fertilizer, the stems and leaves are long, causing the inflorescence nodes to rise and the number to decrease, forming a middle and lower vine. When the first inflorescence pods sit live plants, in conjunction with subsequent sections inflorescence dressing visualized water pouring 1 acre nitrogen, phosphorous and potassium fertilizer 10 to 15 kg, 20 to 30 cubic meters of irrigation. After the pod, keep the soil moist, and then every 1 to 2 weeks irrigation dressing 1, in order to maintain healthy plant growth and flowering pod. Sheng pods into the closed period, more fertilizer needed, can be carried out once again irrigation dressing, 10 kg of urea per acre, superphosphate 20 to 25 kg, 5 kg or potassium sulfate ash 40 kg, 20 to 30 cubic meters of irrigation mu Meter.
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