When will the rice be fertilized?

When will the rice be fertilized? Please introduce that there are different fertilization methods due to the great differences in natural conditions and tillage system production level and fertilization level in different parts of the south of China. The method of pre-stable, medium-promoting and post-supplementary fertilization: on the basis of applying a certain amount of fertilizer in the early stage, increasing the amount of topdressing in the middle stage and applying grain fertilizer in the later stage. The general basic dosage accounts for 40%-60%. In the medium-term topdressing, tiller fertilizer accounts for 30%, panicle fertilizer accounts for 50%, and grain fertilizer accounts for 20%. This method is mainly used for large panicle and large grain varieties of middle and late hybrid rice with long growth period and fields with poor soil fertility and insufficient fertilizer. Sparse and controlled weight fertilization method: this method is also mainly used in large panicle hybrid rice. "sparse" mainly refers to the use of 1 foot × 3 × 4 wide and narrow row spacing in the case of sparse sowing with strong tillers. "control", control base fertilizer (40%-50%), do not apply tiller fertilizer, enough seedlings to dry the field, control ineffective tiller. "heavy", that is, the re-application of panicle fertilizer, the amount of panicle fertilizer accounts for 40%-60% of the total application, and is applied twice. Flower-promoting fertilizer was applied 30-35 days before heading to increase the number of spikelets per panicle and late tillering into spikelets, and the second time to apply flower-protecting fertilizer at booting stage (meiosis stage) to reduce spikelet degeneration and increase seed setting rate. Potassium dihydrogen phosphate was sprayed twice as strong seed fertilizer at heading stage. No matter what kind of fertilization method is adopted, we must take measures according to local conditions, look at the seedlings and see the land, and apply fertilizer scientifically and rationally. Generally, the yield per mu is 550-650 kg, and the amount of pure nitrogen is only 8-12 kg. It is a waste to apply too much. Click to get more rice planting techniques click to get more food crop planting techniques