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研究了不同林龄、不同质量浓度的侧柏(Platycladusorientalis)落叶浸提液对自身种子萌芽和幼苗生长的影响。结果表明:低质量浓度的侧柏落叶浸提液对自身种子发芽和幼苗生长有促进作用,而高质量浓度的有抑制作用,并随质量浓度增大抑制作用逐渐增强,但50年生的侧柏落叶浸提液在质量浓度小于0.01g.mL-1时,随着质量浓度的增大逐渐减弱;当大于0.01g.mL-1时,才随质量浓度的增大而逐渐增强。11年生的侧柏落叶浸提液化感作用较弱,质量浓度大于0.2g.mL-1时才能明显地抑制自身种子萌芽和幼苗生长,而103年生的在质量浓度为0.01g.mL-1时就有显著的抑制作用,50年生的在质量浓度大于0.05g.mL-1时存在显著的抑制作用。质量浓度为0.05g.mL-1时,不同林龄的侧柏落叶浸提液的抑制作用随着林龄的增大而逐渐增强。
The effects of different age and different concentrations of Platycladus orientalis decoction on seed germination and seedling growth were studied. The results showed that the low concentration of extract of Platycladus orientalis leaves could promote the seed germination and seedling growth of their own, while the inhibitory effect of high quality concentration was inhibited, and the inhibitory effect gradually increased with the increase of the mass concentration, but the 50-year-old Platycladus orientalis When the concentration of the extract was less than 0.01g.mL-1, the decoloring extract gradually decreased with the increase of the mass concentration. When the concentration was more than 0.01g.mL-1, the concentration of the extract was gradually increased with the increase of the mass concentration. The 11-year-old Platycladus orientalis leaves extract had a weaker allelopathic effect. When the mass concentration was more than 0.2g.mL-1, the seed germination and seedling growth were obviously inhibited. However, when the mass concentration was 0.01g.mL-1 There is a significant inhibitory effect, 50-year-old mass concentration greater than 0.05g.mL-1 significant inhibitory effect. When the mass concentration was 0.05g.mL-1, the inhibitory effects of extract of Platycladus Orientalus leaves with different ages gradually increased with age.