Bean horn is a crop that continuously blooms and pods. It has many flowers and large pods. The pods grow fast and need sufficient nutrient supply to properly flower and pod. Therefore, it is necessary to strengthen the management of fertilization during the flowering and pod formation of the beans to ensure sufficient nutrient supply. The specific fertilization methods are as follows:
During the flowering and pod formation of the beans, generally every 15~20 days, the roots are applied once, and the quick-acting and quick-acting NPK fertilizer is the main fertilizer. Each time, the application of nitrogen, phosphorus and potassium (20-20-20) water soluble fertilizer is 6~8 kg per mu. After 250 to 300 times of water or biogas slurry or decomposed manure and poultry manure, it is evenly applied to the soil around the roots of the bean plant, and it is better to completely infiltrate the fertilizer into the soil. Or 10-15 kg of potassium sulphate (15-15-15) potassium sulphate or sulphur sulphate or pure sulphur compound fertilizer per mu, and spread the fertilizer evenly on the soil around the roots of the bean plant. A layer of soil with a thickness of about 8 to 10 cm can be covered with fertilizer. In addition, on the basis of root fertilization, foliar topdressing is also required to replenish nutrients from the foliage. During the flowering and pod formation of the beans, 0.1% borax, 0.1% magnesium sulfate, 0.1% zinc sulfate, 0.2% potassium dihydrogen phosphate, 0.3% urea, 600 times amino acid compound micro-fertilizer, 1500 must be sprayed every 7-10 days. Mix 0.001% natural brassin mixture and evenly spray all the leaves, flower buds and pods to start dripping with water drops.
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