不同施肥模式对机插水稻秧苗素质的影响

摘要

为了培育较为健壮的秧苗,试验设置2个品种4个育秧期间的肥料管理模式,分别为每盘22 g壮秧剂(T1,对照)、每盘17 g壮秧剂+0.5%尿素溶液(第一次追施)(T2)、每盘12 g壮秧剂+0.5%尿素溶液50 g/盘(第一次追施)+0.5%尿素溶液50 g/盘(第二次追施)(T3)、每盘7 g壮秧剂+0.5%尿素溶液100 g/盘(第一次追施)+0.5%尿素溶液100 g/盘(第二次追施)(T4),考察对育秧期间秧苗素质的变化.结果表明,T3处理秧苗地上部干物质积累量最大,明显高于其他处理;苗期肥料使用可能出现秧苗生长瘦高现象,注重氮素追施量;各品种各处理秧苗素质和可溶性糖含量表现出显著差异,针对不同品种的处理要有所不同.%For cultivating strong seedling,this study adjusted the management of fertilizer in seedling period. Four treatments were carried out in the study,including 22 g seedlings regulator(T1,CK),17 g seedlings regulator+50 g 0.5% urea solution(first topdressing)(T2),12 g seedlings regulator+50 g 0.5% urea solution(first topdressing)+50 g 0.5% urea solution(second topdressing) (T3),7 g seedlings regulator+100 g 0.5% urea solution (first topdressing)+100 g 0.5% urea solution (second topdressing)(T4). And seedling quality was surveyed in seedling period. The results showed that,dry mass of shoot under T3 treatment accu-mulated more than other treatments. The amount of nitrogen fertilization should be caution,otherwise seedling may grow thin and tall in seedling period,and the application of topdressing nitrogen should be pay attention. Seedling quality and solu ble sugar content were difference among treatments on different varieties. So,different fertilization treatments were applied for dif-ferent varieties.