[Objective] This study was to investigate optimum water managemnent for Mechanical precise hill-drop drilling rice during emergence stage.[Method] Field experiments were conducted with four water managements by using indica hybrid rice Chuanyou 6203.Soil water potential,seed germination and seedling emergence,tillering dynamics and yield were analyzed systematically.[Result] Water managements which irrigated once soil water potential was-8 to-10 kpa not only less irrigation amount and irrigation times,higher emergence rate and seedling rate,stronger root,and less weeds,but also higher yield by more tillers.[Conclusion] Soil of direct-seeded rice should maitain moderate drought during emergence stage.
NETL
NSTL
万方数据
维普
