1. Characteristics of fertilizer requirements for rice Nitrogen, phosphorus, and potassium are nutrient elements that require large amounts of rice and are relatively deficient in soil. Generally, for each 100 kg of rice produced, approximately 1.6-1.9 kg of nitrogen need to be absorbed, 0.8-1.3 kg of phosphorus, and potassium. 1.8-3.8 kg, the ratio of the three is about 1:0.5:1.3. Nitrogen was the highest from the turn green till the tillering stage, and the phosphorus and potassium were the highest during the jointing stage. The uptake of three elements in rice forms two uptake peaks at the peak of tillering and late spikelet differentiation. Therefore, rice must be fertilized according to these nutrient laws and fertilizer absorption characteristics of rice, and fully meet the needs of various nutrient elements for rice uptake peak. Second, Putian fertilization technology First, the use of fertile upland soil and decomposed pig manure by 7:3 ratio of mixed composting, and then according to a certain percentage of high-quality strong agent to join the full mixing sieve to be used; Second, seedlings fertilizer: seedlings 3 After the leaf stage, if there are general defoliation and yellowing of the leaves in the leaves, 100 to 200 g of potassium dihydrogen phosphate or 500 to 1000 g of urea can be used per 100 square meters of seedbed, and 100-200 kg of foliar water can be sprayed after spraying. To rinse with water, to prevent burning seedlings; third is to send the man-made fertilizer: the first time in the first seven days before transplanting, it is best to chase the fertilizer once, in order to ensure the speed of returning green after transplanting, generally urea 6.9 kg per 667 square meters should. Third, the Honda fertilization technology Honda fertilization to do organic fertilizer and chemical fertilizer, top dressing and foliar spray fertilizer combination, the principle of fertilization for the reduction of nitrogen, phosphorus and potassium. The tiller fertilizer is applied twice. The first time the tiller fertilizer is applied 50% of the total amount after returning green, and the latest time is not more than 6 leaves, which promotes early delivery and early delivery of the tiller, and low tillering; when the rice is 7 to 8 When the tip of the leaf is exposed, it is applied for the second time; the panicle fertilizer: the panicle is applied twice. For the first time, 60% of the total amount of panicle fertilizer was applied when the 3 leaves were just exposed, which promoted the differentiation of panicles, branches and spikelets, and strived for large spikes; the second time the flag leaf was used for the first time. , Spike fertilizer is dominated by nitrogen fertilizer, adding appropriate potassium fertilizer.