壮秧剂对不同基因型超级稻秧苗素质的影响

为了研究壮秧剂对不同基因型超级稻秧苗素质的影响，以不同基因型超级稻（超级杂交稻品种‘两优培九’、超级常规稻品种‘胜泰一号’、‘桂农占’和‘玉香油占’）为试验材料，在常规育秧和壮秧剂育秧条件下进行研究。结果表明，壮秧剂对不同基因型水稻具有显著的影响：株高分别比对照显著降低了22.06%~43.44%；秧苗茎基宽显著增加了35.04%~54.72%，单位高度干重显著增加了33.93%~126.50%。而且，显著增强根系的吸收能力（根系总面积、根干重、平均根系半径显著增加）、提高秧苗叶片保护酶（过氧化物酶(POD)、过氧化氢酶(CAT)和过氧化物歧化酶(SOD)）活性，从而达到“壮秧”的目的。

Effects of Seedling-Strengthening Agent on Seedling Quality of Different Super Rice Genotypes

The experiment was carried out to find out the effect of seedling-strengthening agent（SSA） on the seedling growth of different super rice genotypes.In this experiment four super rice genotypes were used as experimental materials viz.one hybrid super rice var.‘Liangyoupeijiu’and three conventional super rice var.‘ Shengtaiyihao’,‘Guinongzhan’and‘Yuxiangyouzhan’.The results indicated that SSA significantly influenced the seeding growth of different super rice genotypes.Compared with the CK,the treatments of applying SSR shortened the seedling height 22.06%-43.44%,increased the basal stem width 33.93%-126.50%and raised dry weight per unite plant height 33.93%-126.50%.Applying SSR also enormously strengthened the absorbing capability of seedling roots and increased activity of protective enzymes[Peroxidase（POD） ,Catalase（CAT） ,Superoxide Dismutase（SOD） ]in leaves,so as to strengthen the rice seedling.