Broad bean seedlings must have sufficient phosphorus and potassium fertilizers to develop the root system, have sufficient rhizobium, and have strong disease resistance, so that no rotten roots and dead seedlings will appear. The plants are robust, the stems are strong, and they are not easy to fall. There are many growing buds, large flowers, sufficient pollen, strong vitality, good pollination and fertilization, high pod formation rate, and full pods. Therefore, pay attention to increasing the application of phosphorus and potassium fertilizer at the seedling stage of broad bean to ensure the supply of phosphorus and potassium fertilizer. The specific fertilization methods are as follows: Phosphorus and potassium fertilizers were applied once at the roots of 3 to 4 leaves and 7 to 8 leaves of fava beans, each time 80 to 100 kg of calcium phosphate or calcium magnesium phosphate and 25 to 30 kg of potassium sulfate were applied per mu. After mixing well, apply it to the soil around the roots of broad bean plants, and then cultivate a layer of soil about 5-6 cm thick. Cover the phosphorus or potassium fertilizer, or irrigate the "horse race water" once in the whole field after fertilization, fast irrigation and quick drainage to prevent the accumulation of water to promote the dissolution and transformation of fertilizers and improve the fertilization effect. In addition, foliar spray of 0.2% -0.3% potassium dihydrogen phosphate, 600 times potassium amino acid mixture, or 25-30 times calcium superphosphate mixed with dry and pure plant ash leaching clear solution every 7-10 days, or 800 ～ 1000 times the mixed solution of Xingpeng Phosphorus Potassium No.1 and 1000 times Nucleotide Potassium, and spray it continuously for 3 to 5 times. Spray all the leaves evenly, and it is advisable to start dripping drops of water. Phosphorus and potassium fertilizers are added from the leaves to increase the plant's phosphorus and potassium levels. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Air Filled Flood Tube,Air Inflated Flood Tube,Air Filled Water Gate,Tube Water Barrier Denilco Environmental technology(Suzhou)Co., Ltd. , https://www.wflood.com