The best time to apply foliar fertilizer is during the early season when rice is in the tillering stage, heading, grain filling, and full heading. Spraying per mu takes more than one hour. If applying fertilizer during flowering, it's best to spray in the morning before flowers open or after 4 pm to avoid damaging the blossoms. When using liquid fertilizers, a variety of nitrogen, phosphorus, and potassium sources can be applied as foliar sprays. These include potassium dihydrogen phosphate, triacontanol, borax, silkworm feces, and even human and animal urine. However, all of these need to be processed into liquid form first. Before application, quick-acting fertilizers should be diluted with 5 to 10 times water to prevent them from drying on the leaves. Human and animal urine must be decomposed in a pond first, while silkworm feces should be soaked in 10 times water for 24 hours, then filtered and sprayed. Borax should be crushed and mixed with a small amount of water to create a concentrated solution before being sprayed onto the plants. Depending on the growth condition of the seedlings and the symptoms of any disease, different types of fertilizers should be used. For example, green phosphorus and poplar plots are suitable for phosphorus-potassium fertilizers. A recommended mixture includes 0.25 grams of urea, 0.5 kilograms of superphosphate, and 0.25 kilograms of potassium chloride dissolved in 60 kilograms of water. Alternatively, 2.5 to 3.7 kilograms of cooked cow urine, 1 kilogram of superphosphate, and 60 kilograms of water can also be used. If the leaves appear yellowish or the growth is uneven, especially in thin soil, it’s best to apply nitrogen-based fertilizer combined with phosphorus for better results. It's important to monitor the crop closely and adjust the type and timing of fertilization based on actual conditions. Proper foliar feeding not only improves nutrient absorption but also helps in enhancing plant resilience against pests and diseases. Always ensure that the sprayer is clean and that the solution is evenly distributed over the leaves for maximum effectiveness. Aluminium Retractable Gate,Retractable Metal Gates,Outdoor Retractable Gate,Aluminum Alloy Retractable Gate Shandong Changchongyun Intelligent Technology Co., Ltd. , https://www.ccyparking.com