郁闭度和种植密度对宝天曼天然锐齿栎林下苦荬菜的生长及产量的影响  

Effects of canopy openness and planting density on the growth and yield of Ixeris denticulata(Houtt.)Steb in Baotianman natural forest of Quercus acutidentata

作　　者：刘晓静[1,2] 朱学灵[1,2] 姚松[1,2] 田野[1,2] 朱从波[1,2] 

机构地区：[1]河南宝天曼国家级自然保护区管理局,河南内乡474350 [2]国家林业局宝天曼森林生态系统定位研究站,河南内乡474350

出　　处：《河南农业大学学报》2011年第3期292-296,共5页Journal of Henan Agricultural University

基　　金：国家"十一五"林业科技支撑计划(2006BADO3A04);国家"十一五"林业科技支撑计划(2008BADB0B0301)

摘　　要：利用野外控制试验的方法,开展不同郁闭度天然锐齿栎林下苦荬菜密度梯度的种植试验.结果表明,在锐齿栎-苦荬菜的林菜复合经营体系中,锐齿栎林分郁闭度和苦荬菜种植密度对苦荬菜地径的影响不大;但显著影响苦荬菜的株高、地上部分生物量和产量;苦荬菜株高和单株生物量随着林分郁闭度和种植密度的增大均呈下降趋势,但苦荬菜产量随种植密度的增加而增加,随郁闭度的增加而下降.因此,在宝天曼地区,适宜在中低郁闭度锐齿栎林下推广种植苦荬菜.Effects of planting density on base breast,height and biomass were investigated under Quercus forest of different canopy openness using control experiment method in this paper.The results indicated canopy openness and planting density had no significant effects on the base breast of Ixeris denticulata（Houtt.）Steb,but strongly affected the height,biomass and yield of Ixeris denticulata（Houtt.）Steb.The biomass and height of Ixeris denticulata（Houtt.）Steb decreased with planting density and canopy openness increasing.The yield of Ixeris denticulata（Houtt.）Steb inceased with the planting density increment,but decreased with canopy openness increment.Based on the results,it is practical to plant Ixeris denticulata（Houtt.）Steb under low or middle openness Quercus forest in Baotianman area.

关 键 词：苦荬菜 郁闭度 种植密度 宝天曼 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]