不同套种模式对雷公藤土壤养分及光合特性的影响  

Effect of Different Interplanting Patterns on Soil Nutrients and Photosynthetic Characteristics of Tripterygium wilfordii

作　　者：李云鸽 乔一娜 叶友杰 陈礼光[2] 倪乐 郑郁善[1,2] LI Yunge;QIAO Yina;YE Youjie;CHEN Liguang;NI Le;ZHENG Yushan(College of Landscape Architecture,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002;College of Forestry,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002)

机构地区：[1]福建农林大学园林学院,福建福州350002 [2]福建农林大学林学院,福建福州350002

出　　处：《北方园艺》2020年第6期101-108,共8页Northern Horticulture

基　　金：“十二五”国家科技支撑计划资助项目(2011BAI01B06)。

摘　　要：以福建泰宁县的雷公藤、厚朴、杉木、马尾松为试验材料,将雷公藤纯林作为对照、厚朴/雷公藤(处理1)、杉木/雷公藤(处理2)、马尾松/雷公藤(处理3)为3种套种模式,研究不同套种模式下林地土壤养分的动态变化,并对土壤养分及雷公藤叶片光合特性进行相关性分析,以期筛选出适合当地且能产生最大效益的雷公藤套种模式。结果表明:厚朴林下套种雷公藤模式可显著提高雷公藤林地土壤的全氮、全钾、水解氮、速效钾、有机质的积累,含量分别增加了10.49%、3.98%、21.22%、31.31%和47.58%;杉木林套种雷公藤模式可使土壤的有效磷和有机质含量增加47.18%和25.11%,土壤的全氮、水解性氮、全钾和速效钾含量分别降低10.33%、12.48%、8.38%和7.29%;而马尾松林下套种雷公藤模式仅使林地土壤的全磷和有机质含量增加13.88%和16.10%;厚朴林下套种雷公藤的叶片最大净光合速率(Pnmax)、光饱和点(LSP)、光补偿点(LCP)以及表观量子效率(AQY)均最高,说明此种模式下雷公藤有较强的弱光适应能力,光合潜能最高,物质积累量多;处理1的净光合速率与土壤的全氮、水解性氮、速效钾、有机质含量呈极显著性正相关(P<0.01),处理2和处理3的净光合速率与土壤的全氮、有效磷、速效钾、有机质均呈极显著性正相关(P<0.01),处理1和处理3的净光合速率与土壤的全钾含量呈极显著性负相关(P<0.01),3种处理下的净光合速率与土壤的全磷含量均无明显的相关性。厚朴林下套种雷公藤的模式可以提高雷公藤林地的土壤肥力且此种模式下的雷公藤具有较高的光合潜能,因此可作为优质林药间作模式广泛推广。Tripterygium wilfordii,Magnolia officinalis,Cunninghamia lanceolata and Pinus massoniana from Taining county of Fujian were used as test materials,and pure Tripterygium wilfordii as control,Magnolia officinalis/Tripterygium wilfordii(Treatment 1),Cunninghamia lanceolata/Tripterygium wilfordii(Treatment 2),Pinus massoniana/Tripterygium wilfordii(Treatment 3)were three interplanting patterns.In order to select the optimal pattern of Tripterygium wilfordii,which could produce the most benefit,the dynamic change of soil nutrients in different treatments and correlation analysis of soil nutrients and photosynthetic characteristics of Tripterygium wilfordii leaves were studied.The results showed that the Magnolia officinalis forest of interplanting Tripterygium wilfordii could significantly increase the accumulation of total nitrogen,total potassium,hydrolyzable nitrogen,available potassium and organic matter of soil,the Cunninghamia lanceolata forest of interplanting Tripterygium wilfordii had only promoted the synthesis of available phosphorus,and other nutrient contents were lower,and the Pinus massoniana forest of interplanting Tripterygium wilfordii could only increase the total phosphorus content of the soil of Tripterygium wilfordii.The indicators photosynthetic of the leaves of Tripterygium wilfordii of interplanting Magnolia officinalis forest,including Pnmax,LSP,LCP,AQY,those indicators were the highest.Indicating that the photosynthesis potential of the leaves was the highest and the material accumulation was more under Magnolia officinalis forest.The indicate of Pn of treatment 1 was positively correlated with soil total nitrogen,hydrolyzable nitrogen,available potassiumand organic matter(P<0.01).The Pn of treatment 2and treatment 3were positively correlated with total nitrogen,available phosphorus,available potassium and organic matter in soil(P<0.01).The Pn of treatment 1and treatment 3was significantly negatively correlated with the total potassium content of soil(P<0.01).There was no significant correla

关 键 词：套种模式 雷公藤 土壤养分 光合特性 

分 类 号：S794.5[农业科学—林木遗传育种]