Cross-fertilization formula fertilization technology for late hybrid rice

1. Hybrid rice requires a relatively high level of nitrogen, requires a slightly lower level of phosphorus, and requires a high level of potassium. At a level of 500 kg per mu, hybrid rice requires 11 kg of pure nitrogen, 4.5-5 kg ​​of phosphorus pentoxide, and 17.5-20 kg of potassium oxide. There are more nitrogen and potassium in the late hybrid rice.
2, in the variety of fertilizers, organic and inorganic, nitrogen and phosphorus potassium, a large number of combined with trace elements. In terms of distribution, it should be heavy, medium, and light. That is to say, the base fertilizer is reapplied, the ear fertilizer is applied early, and the foliar spray fertilizer is popularized later.
3, the bottom fertilizer is 1500-2500 kg of soil and manure, 40 kg of ammonium bicarbonate and 25 kg of superphosphate. The tiller fertilizer is applied for 7-8 kg of urea in 3-5 days after the insertion, and 7-8 kg of potassium chloride is applied to the mu after re-watering in the sun. The flowering period of the heading is sprayed with 0.2% potassium dihydrogen phosphate and 1% urea solution.

Huaxian County Fertilizer Station Yue Xiuli

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