In the current agricultural planting, no matter which fertilization method is used for rice, it must be adapted to local conditions, see the seedlings and the ground, and fertilize scientifically and rationally. Generally, the yield per mu is 550-650kg, and the amount of pure nitrogen only needs 8-12kg. It is a waste to apply too much. Today we will look at the main points of scientific fertilization of rice:

1. the method of pre-stable, medium-promoted and post-supplementary fertilization: this method is based on the application of a certain amount of fertilizer in the early stage, increasing the amount of top dressing to attack the large spike in the middle stage, and applying grain fertilizer to the seedlings in the later stage. The general basic dosage accounts for 40%-60%. In the medium-term top dressing, tillering fertilizer accounts for 30%, ear fertilizer accounts for 50%, and grain fertilizer accounts for 20%. This method is mainly used for large panicle and large grain varieties of medium and late hybrid rice with long growth period and fields with poor soil fertility and insufficient fertilizer.

Key Points of Scientific Fertilization for Rice

2. dilute, controlled heavy fertilization method: this method is also mainly used in large spike type hybrid rice. "Dilute" mainly refers to the use of 1 foot × 3 × 4 wide and narrow row spacing under the condition of sparse sowing with tillers and strong seedlings. "Control", control base fertilizer (40%-50%), no tillering fertilizer, enough seedlings to dry the field, control ineffective tillering. "Heavy", that is, heavy application of ear fertilizer, the amount of ear fertilizer accounts for 40%-60% of the total application amount, which is applied in two times. For the first time, the flower-promoting fertilizer was applied 30-35 days before heading to increase the number of spikelets per spike and late tillers to form spikelets, and for the second time, the flower-preserving fertilizer was applied at the booting stage (meiosis stage) to reduce the degeneration of spikelets and improve the seed setting rate.