不同育秧方式对机插香稻秧苗素质及生理特性的影响

Effects of Different Seedling Raising Methods on Seedling Quality and Physiological Characteristics of Machine-Transplanted Aromatic Rice

育秧是机插香稻生产中重要的一个环节。为探究不同育秧方式对机插香稻秧苗素质以及生理特性的影响,选用香稻品种美香占2号和象牙香占为材料,采用2种育秧盘(钵苗盘和硬秧盘)、2种育秧基质(稻田土和水稻育苗基质)、壮秧剂处理(以无壮秧剂为对照)搭配组合进行试验。结果表明,壮秧剂处理和育苗基质育秧显著提高了香稻秧苗素质及抗性酶活性。本试验中,最优的育秧方式为基质硬秧盘壮秧剂育秧和基质钵苗盘壮秧剂育秧,这2个处理下秧苗的单株生物量最大,抗性酶活性最高。

Raising seedlings is an important part in the production of machine-transplanted aromatic rice.In order to explore the effects of different seedling raising methods on the quality and physiological characteristics of machinetransplanted aromatic rice seedlings,two varieties of fragrant rice(Meixiangzhan 2 and Xiangyaxiangzhan)were selected.In this study two types of seedling-raising trays(bowl seedling tray and hard seedling tray),two kinds of seedling-raising substrate(rice paddy soil and rice seedling matrix),two kinds of seedling-strengthening agents(application of seedling-strengthening agent and non seedling-strengthening agent)were tested in combination.The results showed that the seedling quality and resistance enzyme activity of the fragrant rice seedlings were significantly improved by the application of seedling-strengthening agent and using rice seedling-raising medium.In this experiment,the optimal breeding method is MHT(combination of rice seedling matrix,hard seedling tray and application of seedling-strengthening agent)and MBT(combination of rice seedling matrix,bowl seedling tray and application of seedling-strengthening agent)because these two treatments have the largest biomass per plant and the highest resistance enzyme activity.