How to fertilize rice? Mastering scientific fertilization methods is key

Use organic fertilizer together with chemical fertilizer. Organic fertilizer is rich in organic matter, can build up soil fertility, provide a variety of nutrients, and also supply compounds with auxin- and hormone-like properties. Applying organic fertilizer helps maintain the nitrogen reserves in rice paddy soil. Organic fertilizer releases nutrients slowly, while chemical fertilizers are mostly quick-acting fertilizers that supply nutrients rapidly; using the two together makes the nutrient supply relatively steady. The organic acids and humic acids in organic fertilizer can bind with iron and aluminum in the soil, reducing the fixation of phosphate fertilizer by the soil and increasing the amount of available phosphorus and the cycling of phosphate fertilizer in the soil.

Combined application of nitrogen and phosphorus, or nitrogen, phosphorus and potassium fertilizers. When nitrogen fertilizer alone is applied, rice tends to stay green late, lodge, and is prone to rice blast, with a high rate of empty grains, affecting yield. Combined application of nitrogen, phosphorus and potassium fertilizers increases yield by 54 kg per mu compared with applying nitrogen fertilizer alone.

Appropriate dosage, with combined application of base fertilizer and topdressing. The more fertilizer applied, the higher the yield is not always true; rather, only with an appropriate dosage and a reasonable ratio can yield be increased. Only by topdressing chemical fertilizer at the right time and in the right amount according to the growth of the rice seedlings can the robust growth of rice be promoted. The number of topdressings should be determined according to local climatic conditions and the condition of the seedlings.