水稻机械增密减氮高效栽培模式效益分析

Economic Analysis of Rice Mechanical Dense Planting with Less N Fertilizer Cultivation Patterns

针对辽宁省水稻生产插秧密度较稀、基本苗和有效穗数不足导致产量降低的问题,提出以水稻机械化栽培,增密减氮技术为核心,集成多种单项技术,建立了水稻机械增密减氮高效栽培技术模式,并进行示范推广应用。调查研究发现,本模式相较常规方法可减少15%施氮量,节水10%以上,减少农药使用次数和用量,节本增效显著。

The study was to solve problems of low rice yield which was caused by sparse transplantingdensity, poor basic seedlings and effective ears and so on.The patterns of mechanical dense planting withless N fertilizer cultivaiton in rice was founded with the core of mechanization cultivation and density-increasing, less N fertilizer and multiple singletechniques. The results showed that, compared toconventional methods, the patterns could lessen 15% ofN applied, water saved 10% and pesticidesdecreased. Above all, this pattern could bring costsaving and benefitsincreasing apparently.