3种微生物菌剂处理三七种子对其生长及种苗品质的影响

Effects of treating seeds with three microbial agents on growth and seedling quality of Panax notoginseng

为探明微生物菌剂处理三七种子对三七生长及种苗品质的影响,以三七种子为试材,通过设置随机区组试验,分析比较3种微生物菌剂对三七出苗、存苗、农艺性状、根腐病病害发生及种苗品质的影响。结果表明:1)3种微生物菌剂均有利于三七的存苗,其中以植物益生菌液1号菌剂200倍稀释液处理效果最优,但对出苗有一定的抑制作用;2)哈茨木霉菌剂对三七根腐病的防治效果优于植物益生菌液1号和宁盾菌剂,生育期根腐病平均发生率依次为:植物益生菌液1号菌剂(1.79%)>宁盾菌剂(1.42%)>对照(1.17%)>哈茨木霉菌剂(0.58%);3)3种微生物菌剂均有利于三七种苗总皂苷含量的积累及地上部的生长,其中植物益生菌液1号200倍稀释液和宁盾水剂100倍稀释液总皂苷含量显著高于对照,分别较对照增加36.96%和30.97%。综上,微生物菌剂处理三七种子有利于三七地上部生长、存苗及种苗皂苷含量的积累,其中以植物益生菌液1号菌剂200倍稀释液效果最优。本研究可为微生物菌剂在三七上的合理应用提供一定的理论基础和科学依据。

The object of this study is to explore the effects of microbial agents to promoting plant growth and seedling quality of Panax notoginseng.P.notoginseng seeds were used as materials and randomized block experiments were set.The effects of three microbial agents on the seed germination,seedling survival and seedling growth,root rot disease occurrence and seedling quality were evaluated comprehensively.The results showed that:1)These three microbial agents were beneficial to the seedling survival,but some certain inhibitory effects on seed germination were observed.Among them,the treatment with 200 times dilution of plant probiotics No.1displayed the best effect.2)The root rot disease control effect of Trichoderma harzianum was better than others.The average incidence of root rot in descending order during growth period was plant probiotics No.1(1.79%)>Ningdun(1.42%)>control(1.17%)>T.harzianum(0.58%).3)All three microbial agents had a significant effects on the growth of aboveground parts and seedling saponins accumulation.By comparing with the control treatment,the total saponins content of 200 times dilution of plant probiotics No.1and 100times dilution of Ningdun water agent were significantly higher which increased by 36.96% and 30.97%,respectively.In summary,the microbial agents treatment of P.notoginseng seeds is beneficial to the growth of aboveground parts,seedling survival and saponins accumulation.Among them,200 times dilution of plant probiotics No.1has the best effect.This study can provide a theoretical and scientific basis for the rational application of microbial agents on P.notoginseng.