影响锥栗对栗瘿蜂抗性表达的土壤因子研究  

Soil factors affecting the resistance of Castanea henryi against Dryocosmus kuriphilus

作　　者：黄金聪 

机构地区：[1]南平市森林病虫害防治检疫站,福建南平353000

出　　处：《中国森林病虫》2005年第5期9-12,共4页Forest Pest and Disease

基　　金：福建省教育厅科研基金项目(K97040);南平市科委1999年资助项目

摘　　要：影响锥栗抗虫性的土壤因子有:全P含量、20～60 cm层土壤的速效K含量、20～40 cm层土壤的通气透水性指标(特别是非毛管孔隙度)和40～60 cm层土壤的pH值、有机质含量.全P含量越高,锥栗越抗虫,反之,则越易感虫.20～60 cm层土壤的速效K含量对锥栗的抗虫性有显著的影响,速效K含量越高,锥栗的抗虫性越强.20～40 cm层土壤的通气透水性良好,有助于锥栗抵御栗瘿蜂的危害.非毛管孔隙度小于6%,则锥栗生长受影响,易受栗瘿蜂危害.40～60 cm层土壤的pH值和有机质含量对栗瘿蜂危害锥栗亦产生影响.在pH值4.5～5.0范围内,pH值小能提高锥栗的抗虫性.The soil properties, physical and chemical, were measured. The result showed that the resistance of Castanea kenryi against Dryocosmus kuriphilus was correlated with the content of phosphorus （P2O5） in the soil about 20-60 cm deep,quick-acting potassium（K） in the soil about 20-60 cm deep and the gas and water permeability of the soil about 20-40 cm deep, hydrogen-ion concentration and orgarlic matter of the soil about 40-60 cm deep also had significant effect on the resistance.

关 键 词：栗瘿蜂 锥栗 抗虫性 土壤因子 

分 类 号：S722.36[农业科学—林木遗传育种]