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以磷、钾肥做底肥一次施入，对氮肥用量和时期进行了研究。结果表明：１ ｍ２ 苗床２５ ｋｇ 风干河淤土中一次性施入磷酸二铵２６ ｇ 、硫酸钾２４ ｇ 做底肥，在水稻二叶期一次性施入尿素３９ ｇ，秧苗综合素质最好，这可为盐碱土区水稻旱育苗施用氮肥提供参考。
With phosphorus, potash as a base fertilizer once applied, the amount and period of nitrogen fertilizer were studied. The results showed that 26 g of diammonium phosphate and 24 g of potassium sulfate were used as sole fertilizer in one silt of 25 kg air-dried river of 1 m2 seedbed, and the total quality of the seedlings was the best in the second leaf stage It can provide reference for applying nitrogen fertilizer to rice drought nursery in saline-alkali soil.