摘要
为了探索樟子松树皮作为育苗基质的理化性质变化,将不同粒径级樟子松树皮混配后,再与田园土按1∶3、1∶1、3∶1比例混配,组成12种基质,测定其各项理化指标。结果显示:随着树皮添加比例的增加,基质的容重逐渐降低,总孔隙度、通气孔隙度、气水比逐渐增大,pH逐渐呈酸性,电导率增加,有机碳、全氮、碱解氮、速效钾含量逐渐增加,全磷、速效磷、全钾没有明显的变化规律。≤0.6 mm粒径级树皮含量越多,基质养分含量越多,>2.5~5.0 mm粒径级树皮含量越多,基质的通气孔隙度越大。可以通过调整樟子松树皮粒径级和添加比例以达到育苗的理化性质需求。通过对樟子松树皮基质理化性质的分析,为今后将樟子松树皮作为育苗基质提供了理论依据。
In order to explore the changes of physicochemical properties of Pinus sylvestris bark which was used as seedling substrate,we studied physicochemical properties of 12 kinds of seedling substrate which mixed the mixture consists of bark of different particle size with soil in the proportions of 1∶3,1∶1 and 3∶1.The results showed that with the increase of bark addition ratio,the bulk density of substrate decreased,the total porosity,aeration porosity and gas-water ratio increased,the pH became acidic,the EC increased,the contents of organic carbon,total-nitrogen,alkali-hydrolyzed nitrogen and available-potassium increased gradually,but the total-phosphorus,available-phosphorus and total-potassium showed no obvious change rule.The more bark content with≤0.6 mm particle size,the more nutrient content.The more bark content with>2.5-5.0 mm particle size,the greater aeration porosity.Therefore,the difference of physicochemical properties of the substrate can be achieved by adjusting the particle size and proportion of the bark.By analyzing the physicochemical properties of seedling substrate,we can provide a theory basis for using Pinus sylvestris bark as seedling substrate in the future.
作者
李艳红
李艳凤
朱宾宾
李昕
孙双红
林文霞
张红蕾
LI Yan-hong;LI Yan-feng;ZHU Bin-bin(Hulun Buir Forestry Research Institution,Hulun Buir,Inner Mongolia 021008;Forestry and Grassland Bureau of Ewenki Autonomous Banner,Ewenki Autonomous Banner,Inner Mongolia 021100)
出处
《安徽农业科学》
CAS
2020年第20期117-119,共3页
Journal of Anhui Agricultural Sciences
基金
内蒙古自治区应用技术研究与开发资金项目“樟子松树皮基质理化性质变化及对苗木的影响研究”。
关键词
樟子松
树皮
基质
理化性质
Pinus sylvestris
Bark
Substrate
Physicochemical properties
