森林工程2024，Vol.40Issue(1)：44-54,11.DOI:10.3969/j.issn.1006-8023.2024.01.006
3种浸提液对2年生樟子松幼苗生理指标的影响
Effects of Three Extracts on Physiological Indexes of 2-year-old Pinus sylvestris var.mongolica Seedlings
摘要
Abstract
In order to investigate the presence of allelopathic substances that inhibit the growth of Pinus sylvestris var.mongolica seedlings,and to study the obstacles to natural renewal in P.sylvestris var.mongolica plantations,the effects of three types of extract on seed germination and the growth of 2-year-old seedlings were investigated by using pot plant experiments with mass concentrations of 1 ∶ 50,1 ∶ 250,1 ∶ 500 and 1 ∶ 1 000 extracts,and univariate analysis of variance,two-way ANOVA and least significant range method were used to explore the effects of three types of extracts on seed germination and growth of 2-year-old seedlings.The results showed that:1)In the pot experiment of 2-year old P.sylvestris var.mongolica seedlings,it was found that the extract of Caragana korshinskii Kom significantly inhibited the net photosynthetic rate,chlorophyll content,malondialdehyde content and catalase activity of seedlings when the concentration was 1 ∶ 50.They were 34.52%,35.58%,30.50% and 40.28% lower than the control.2)When the concentration was 1 ∶ 50,the extract of dead leaves of Carex spp.showed a trend of promoting the net photosynthetic rate,transpi-ration rate,chlorophyll content and malondialdehyde content of seedlings at the low concentration of 1 ∶ 1 000 and inhibiting the high concentration of 1 ∶ 50,and had a significant promoting effect at the concentration of 1 ∶ 1 000.They were 37.71%,49.22%,18.51% and 6.13% higher than the control.3)The net photosynthetic rate,malondialdehyde content,catalase activity and superox-ide dismutase activity were significantly inhibited when the concentration was 1 ∶ 50,which were 36.88%,18.24%,45.10% and 20.48% lower than the control,respectively.Among them,all the extracts of C.korshinskii Kom and Poplus spp.could promote the soluble protein of seedlings.4)The sum of squared dispersions of 2-year-old P.sylvestris var.mongolica seedlings for net photosyn-thetic rate,transpiration rate,chlorophyll content,determination of malondialdehyde content,catalase activity and peroxidase activity were greater than that of the donor,and vice versa.5)The effect of extracts on the growth stage of P.sylvestris var.mongolica seed-lings was ranked as C.spp.>P.spp.>C.korshinskii Kom.Therefore,we can break up the C.spp.as fertilizer to promote the growth of P.sylvestris var.mongolica.关键词
樟子松/浸提液/幼苗生长/化感作用/生理指标Key words
Pinus sylvestris var.mongolica/leaching solution/seedling growth/allelopathy/physiological indicators分类
交通工程引用本文复制引用
王浩宇,刘建功,袁泓昌,段文标,朱帅威,牟淼先..3种浸提液对2年生樟子松幼苗生理指标的影响[J].森林工程,2024,40(1):44-54,11.基金项目
省部级基金(2020CG0074). （2020CG0074）
