板栗超补偿力的研究  

Overcompensation of Castanea millissima

作　　者：梁修山 李多祥 章立新 何进义 

机构地区：[1]六安市森林病虫害防治检疫站,安徽六安237002 [2]六安市裕安区森林病虫害防治检疫站,安徽六安237008 [3]舒城县城冲乡林业站,安徽舒城231300 [4]六安市裕安区石板冲乡林业站,安徽六安237000

出　　处：《中国森林病虫》2004年第4期18-20,共3页Forest Pest and Disease

摘　　要：板栗极易遭受剪枝栎实象Cyllorhynchitesursulus (Roel.)的严重危害 ,为探讨其危害损失程度 ,在舒城县城冲乡板栗林区 ,进行了模拟害虫危害和控制虫口自然危害试验。结果表明 :板栗具有超补偿力。 10a生板栗 ,疏苞率在 5 %～ 2 3%时 ,平均单粒增重量为 0 4～ 2 4 g之间 ,疏苞率在5 %～ 17%时 ,平均单株增产 2 4 1%～ 6 88% ;疏苞率在 19%～ 2 3%时 ,平均单株减产 1 6 0 %～6 36 % ;在 2 2a生板栗林 ,控制单株雌成虫量在 1～ 2头危害时 ,平均单株增产 2 75 %～ 5 39% ,但在 3～ 6头危害时 ,平均单株减产 1 0 9%～ 2 4 30 %。Castanea millissima was easily attacked by Cyllorhynchites ursulus.So the experiments of simulated pest damage and controlled natural population damage were made in C.millissima stands in Shucheng County of Anhui Province.The result showed C.millissima had overcompensation.In the C.millissima stands of 10 years,the weight of each chestnut increased by 0.4～2.4 g when the buds were thinned out 5%～23%,the production increased by 2.41%～6.88% per tree when the buds were thinned out 5%～17% while the production fell 1.60%～6.36% per tree when the buds were thinned out 19%～23%.In the C.millissima stands of 22 years,the production increased by 2.75%～5.39% when the number of female adults was controlled between 1 and 2 per tree while the production fell 1.09%～24.30% when the number was between 3 and 6 per tree.

关 键 词：剪枝栎实象 模拟危害 板栗 超补偿 

分 类 号：S763.38[农业科学—森林保护学]