缓释与速效肥配施对滨海稻区直播稻产量的影响

Effects of Slow-release and Quick-acting Fertilizer on the Yield of Direct Seeding Rice in Coastal Rice Area

为了探索滨海稻区水稻旱直播最佳施肥方案,保证产量同时尽量降低农业成本、降低劳动强度、提高农业生产效率、生态效益,为直播稻未来在滨海稻区发展提供理论依据。采用田间对比试验方法,研究缓释肥与速效氮肥配施对滨海稻区水稻旱直播产量的影响。结果表明,实际产量750 kg/hm^(2)的缓释肥(基肥)与65 kg/hm^(2)的速效氮肥(蘖肥)配施的处理7或750 kg/hm^(2)的缓释肥(基肥)与33 kg/hm^(2)的速效氮肥(穗肥)配施的处理8较好。处理7产量比处理8增加1.09%。合理的缓释肥与速效氮肥配施能够满足水稻各时期生长发育对肥的需要,大大提高了水稻旱直播产量。

The aim of this study was to explore the optimal fertilization scheme for direct seeding of rice in the coastal rice region,ensure the yield,reduce agricultural cost,reduce labor intensity,improve agricultural production efficiency and ecological benefits as much as possible,and provide theoretical basis for the future development of direct seeding rice in the coastal rice region.Field comparison experiment was conducted to study the effects of slow-release fertilizer combined with quick-acting nitrogen fertilizer on rice yield in coastal rice area.The results showed that the actual yield was better when 750 kg/hm^(2) slow release fertilizer(base fertilizer)combined with 65 kg/hm^(2) fast acting nitrogen fertilizer(tillering fertilizer)of treatment 7 or 750 kg/hm^(2) slow release fertilizer(base fertilizer)combined with 33 kg/hm^(2) fast acting nitrogen fertilizer(ear fertilizer)of treatment 8.The yield of treatment 7 was 1.09%higher than that of treatment 8.Reasonable combination of slow release fertilizer and fast nitrogen fertilizer can meet the needs of rice growth and development at different stages,and greatly improve the yield of rice in dry direct seeding.