How to fertilize rice? When is the best time to fertilize?

Rice is one of the staple foods that everyone eats every day. Rice is made by husking rice grown by grain farmers. Rice is cultivated in both the north and south of my country. Some places have single-season rice, and some places have double-season rice. Let’s learn how to fertilize rice. When is the best time to fertilize?

1. Base fertilizer

Apply to the soil before transplanting, accounting for 40% of the total amount of fertilizer, combined with the last harrowing of the field. Attention should be paid to the application of organic fertilizer as base fertilizer. Generally, 10-15 kg of organic fertilizer is applied per mu through drip irrigation, and one set of organic fertilizer is added when the soil is mixed with the irrigation method.

2. Tillering fertilizer

The tillering stage is an important period for increasing the number of plants and should be applied half a month after transplanting or transplanting. Tillering fertilizer is generally applied twice. The first time is after the seeds turn green, applying 7 to 8 kg of urea or high-nitrogen compound fertilizer per mu. The second time is during the peak tillering period, applying 7 to 8 kg of urea or high-nitrogen compound fertilizer per mu.

3. Ear fertilizer

Fertilizers are divided into flowering-promoting fertilizers and flowering-preserving fertilizers. Flower-promoting fertilizers are applied from the spike differentiation stage to the spikelet differentiation stage, while flower-preserving fertilizers are applied slightly before the pollen cell meiosis stage, which has the effect of preventing spikelets from degeneration.

4. Granular fertilizer

Apply from heading to maturity to improve fruit set rate, ensure full maturity and increase thousand-grain weight. The amount of topdressing should depend on the growth of rice, and less is better than more.

5. Fertilization period

The absorption of nitrogen by rice reaches its peak during the tillering stage and the heading and flowering stage. The absorption of phosphorus fertilizer is the largest during the tillering to panicle differentiation stage, and the absorption of potassium fertilizer is mainly during the panicle differentiation to heading and flowering stage.

6. Foliar fertilization

If zinc fertilizer is not applied as base fertilizer, 50 to 100 grams of zinc sulfate mixed with a 0.2% aqueous solution can be applied to the leaves during the tillering period.

7. Fertilization method

The method of rice fertilization should be determined according to soil characteristics, rice growth stage and target yield, and the proportion and timing of basal fertilizer, tillering fertilizer, panicle fertilizer and grain fertilizer should be reasonably allocated.

8. Field management

In addition to fertilization, field management measures such as water management and pest and disease control should be combined to ensure the healthy growth of rice.

The above is an introduction to the key points of rice fertilization. The emphasis is different in each growth stage, so everyone needs to grasp it well.