Effects of Different Intercrop of Pyrus bretschnelder Rehd on Occurrence and Prevention of Cicadella viridis Linné
LI Chun-lian;LING Jun-cheng;Gucheng Forestry center of Tianzhu County;Forestry Work Station of Tianzhu County;
Effects of different intercrop of Pyrus bretschnelder Rehd on climate of tree,occurrence of Cicadella viridis Linnéand growth of branch after winter were studied in hexi corridor area of Gansu.The result showed that the humidity of tree,the number of adult pest on single leaf,pest occurrence rate on leaf,the number of pest egg on branch,pest egg occurrence rate on branch and mortality of branch after winter were decreased,the light receiving rate of tree,germination rate after winter and growth of new branch were increased by low stem and narrow leaf crop onion and beet compare to high stem and broad leaf annuus and wheat. Low stem and narrow leaf crop onion and beet were suggested to intercrop for increase income and decrease occurrence of Pyrus bretschnelder Rehd,and prevention measures were proposed to occurrence regularity of Pyrus bretschnelder Rehd.
【CateGory Index】： S436.612.2;S344.2