不同直播造林技术对吉林地区红松生长发育及土壤状况的影响  

Study on Growth,Development and Soil Status of Pinus koraiensis Sieb.in Jilin Area by Different Direct Planting Techniques

作　　者：杨军[1] 毛景山 Yang Jun;Mao Jingshan(Jilin Province Forestry Investigation and Planning Institute,Changchun,Jilin 130000,China)

机构地区：[1]吉林省林业调查规划院,吉林长春130000

出　　处：《绿色科技》2023年第21期108-111,共4页Journal of Green Science and Technology

摘　　要：为了探究吉林地区不同直播造林技术对红松生长特性、根系形态以及林间土壤性质的影响,选取吉林省桦甸红石国家森林公园为试验地点,规划3块同等面积(20 m×20 m)样地,分别采用常规直播造林技术、直接直播造林技术和近自然直播造林技术,比较了不同造林技术下的红松生长情况、根系形态以及林间土壤性质。结果表明:①生长特性:近自然直播造林技术下,红松幼苗高、地径均高于常规直播造林技术和直接直播造林技术(P<0.05),且直接直播造林技术生长特性优于常规直播造林技术(P<0.05);②根系形态:近自然直播造林技术下根总长、根表面积和根体积等根系指标明显优于常规直播造林技术、直接直播造林技术(P<0.05),常规直播造林技术和直接直播造林技术红松根系指标无差异(P>0.05);③土壤性质:近自然直播造林红松土壤pH值含量低于常规直播造林技术和直接直播造林技术,有机质含量高于常规直播造林技术和直接直播造林技术(P<0.05),后两者比较无差异(P>0.05)。指出了不同直播造林技术对红松幼苗的生长、根部发育和林地土壤有显著影响,其中以近自然直播造林技术效果最理想。Taking Jilin as the research site,the effects of different direct-seeding techniques on growth characteristics,root morphology and interforest soil properties of Pinus koraiensis Sieb.were analyzed.Three plots with the same area(20m×20m)were planned in Huadian Hongshi National Forest Park,Jilin Province.Conventional direct seeding,direct-seeding and near-nature direct-seeding were used to compare the growth,root morphology and interforest soil properties of Pinus koraiensis Sieb.under different planting techniques.Results:①Growth characteristics:the seedling height and diameter were higher than those of conventional direct-seeding and direct-seeding(P<0.05),and the growth characteristics of direct seeding were better than those of conventional direct-seeding(P<0.05).②Root morphology:root indexes such as root total length,root surface area and root volume were significantly better than those of conventional and direct-afforestation technologies under near-natural direct afforestation technology(P<0.05),and there was no difference in root indexes between conventional and direct-afforestation technologies(P>0.05).③Soil properties:The pH content of the soil of near-natural direct-seeding was lower than that of conventional direct-seeding and direct-seeding technologies.The organic matter content was higher than that of conventional direct-seeding and direct-seeding technologies(P<0.05),and there was no difference between the latter two(P>0.05).Conclusion:Different direct seeding techniques have significant effects on the growth of Pinus koraiensis Sieb.seedlings,root development and forest soil.The experimental results show that the near-nature direct-seeding technique has the best effect.

关 键 词：红松 近自然直播造林 生长特性 根部发育 

分 类 号：S791.47[农业科学—林木遗传育种]