不同种类Ni~(2+)盐浸种对作物种子活力的影响

目的]为镍肥的进一步开发利用提供基础理论依据。方法]以春小麦和樱桃番茄为试材,选取均匀一致、饱满的50~100 g种子,分别置于不同浓度、不同种类的Ni2+盐溶液中浸种6~12 h,研究了3种Ni2+盐(氯化镍、硝酸镍、硫酸镍)浸种对作物种子活力的影响。结果]适量浓度的Ni2+盐浸种可以促进两种作物种子萌发,促进根系和芽生长,幼苗干物质积累增加。春小麦浸种适宜浓度范围为0~2μmol/L,且因Ni2+盐种类而异;樱桃番茄浸种适宜浓度均为0.5μmol/L,其作用效应大小因Ni2+盐种类和作物品种而异。结论]相同浓度条件下不同Ni2+盐所产生的生物效应差异可能与Ni2+盐中阴阳离子的加和作用有关。

Effects of Seed SoakiIlg with Different Kinds of Ni2 Salt on the Seed Vigor of Crop

Objective] The aim of the research was to provide basic theoretical basis for further development and utilization of Ni fertilizer.Method] With spring wheat and cherry tomato as the tested materials,50～100 g homogeneous and plump seeds were selected and placed in Ni2+ salt solution with different concn.and species for soaking for 6～12 h.The effects of seed soaking with 3 kinds of Ni2+ salt(NiCl2,Ni(NO3)2,NiSO4) on the seed vigor of crop were studied.Result] Seed soaking with Ni2+ salt at suitable concn.could promote the germination of 2 kinds of crops,promote the growth of root system and buds and increase dry matter accumulation in the seedlings.The suitable concn.for seed soaking of spring wheat was 0～2 μmol/L,which was different with the species of Ni2+ salt.The suitable concn.for seed soaking of cherry tomato was 0.5 μmol/L and its action effect was different with the kinds of Ni2+ salt and crop variety.Conclusion] Under the same concn.conditions,the biological effect difference produced from different Ni2+ salt was possibly related with the additive effect of anion and cation in Ni2+ salt.