【摘要】 2004年,对吉林省白城地区杨树防护林青杨天牛的为害状况进行了调查,结果显示,平均受害率为14.490%。2005~2008年,选择5个空间距离相互不小于50 km的样地,采用综合措施进行防治,受害率由14.490%降至0.008%。更多还原

【Abstract】 The damaged conditions of poplar shelterbelts by Saperda populnea was investigated in 2004 in Baicheng region of Jilin Province,China.Averagely, 14.49% of poplar trees were infected by S.populnea.From 2005 to 2008,the integrated control of S.populnea was conducted in five selected sample plots,with a distance of about 50 km from each other,in the poplar shelterbelts,and the average infected rate of poplar trees was reduced from 14.49% to 0.008%.更多还原