蚯蚓堆肥浸提液对幼苗生长的影响

Effect of vermicompost extract on seedling growth

蚯蚓堆肥浸提液的育苗试验结果表明,不同浓度蚯蚓堆肥浸提液理化性质呈梯度变化,对幼苗生长发育的影响不同。与纯无机营养液体系相比,蚯蚓堆肥浸提液对番茄、小白菜及水稻幼苗的地上部生长、根系生长和活力、壮苗指数、叶绿素含量、抗氧化酶活性等指标均有不同程度提高。其中,添加浓度为7.5%蚯蚓堆肥浸提液的应用效果最佳;随着浸提液浓度的增加,盐分浓度相应增加,则抑制了育苗生长。综上,在无机营养液中添加浓度7.5%的蚯蚓堆肥浸提液能够不同程度促进幼苗的生长,具有良好的壮苗效果,为蚯蚓堆肥浸提液的应用奠定了一定的理论基础。

The results of seedling experiments of vermicompost extracts showed that the physicochemical properties of vermicompost extracts with different concentrations showed gradient changes,which had different effects on seedling growth and development.Compared with the pure inorganic nutrient solution system,the vermicompost extract increased the aboveground growth,root growth and vigor,seedling index,chlorophyll content and antioxidant enzyme activity of tomato,pakchoi and rice seedlings to different degrees.Among them,the application of the concentration of 7.5% vermicompost extract was the best;with the increase of the concentration of the leaching solution,the salt concentration increased correspondingly,which inhibited the growth of seedlings.In summary,the addition of 7.5% concentration of vermicompost extract in inorganic nutrient solution can promote the growth of seedlings differently,and has a good effect on seedling,which lays a theoretical foundation for the application of vermicompost extracts.