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以超级稻广两优香66为试验品种,采用大区无重复设计,探索氮、磷、钾肥及合理配方施肥对水稻产量的影响和最佳施用方法,结果表明,氮、磷、钾按一定比例配合施用具有最大的增产量和增产率,配方施肥及氮肥后移均有明显的增产效果,增产幅度达7%;中等肥力田块以亩施总氮12.5千克,总磷(P2O5)5.4千克,总钾(K20)4.8千克的施肥指标为宜,施肥方法以磷钾肥一次性基施、氮肥按基肥、返青分蘖肥、穗肥比例5∶2∶3施用为佳。
Using super rice “Guangliangyu66” as test variety, the paper studied the effects of N, P, K fertilizers and rational formula fertilizers on the yield of rice and the best application method by using no repeat design in large area. The results showed that N, P, Proportioned with the application of the largest increase yield and yield, formula fertilization and nitrogen fertilizer were significantly increased yield, the rate of increase of 7%; medium fertility plots of total nitrogen 12.5 kg per mu, total phosphorus (P2O5) 5.4 kg , Total potassium (K20) 4.8 kg fertilization index is appropriate, fertilization method to phosphorus and potassium one-time base facilities, nitrogen fertilizer by base, turn green tillering, panicle ratio of 5: 2: 3 application is better.