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为了夺取水稻高产,稻田每年都要施肥.以补充土壤中氮、磷、钾、硅等营养元素的消耗.据测定,生产1,000斤稻谷,要从土中吸收16～20斤氮素,10～13斤磷酸,25～30斤氧化钾,以及大量的硅酸,一般以氮素化肥的增产效果最明显。因此,在大量施用农家肥及磷肥的同时.合理施用氮素化肥.是实现水稻高产稳产
In order to seize the rice yield, paddy fields are fertilized every year to supplement the consumption of nitrogen, phosphorus, potassium, silicon and other nutrients in the soil.It is determined that 1,000 kg of rice will be produced and 16 to 20 kg of nitrogen should be absorbed from the soil, 13 pounds of phosphoric acid, 25 ~ 30 kg of potassium oxide, and a lot of silicic acid, nitrogen fertilizer generally increase the yield of the most obvious effect. Therefore, in the large-scale application of manure and phosphate fertilizer, rational use of nitrogen fertilizer is to achieve high and stable yield of rice