黑河地区大豆食心虫发生规律调查

Investigation on Occurrence Regularity of Leguminiviora glycinivorella in Heihe Region

利用性诱剂诱捕法，对黑河地区2009～2012年大豆食心虫的发生时期进行调查。结果表明：黑河地区大豆食心虫始发期在7月中旬，终结期在8月中旬，持续时间约30d。大豆食心虫发生出现多个峰值，但发生盛期一般出现在7月23～29日。2011年由于气候原因高峰期推后10d左右。黑河地区大豆食心虫2009～2012年虫食率为5．53％～11．26％，属轻度至中度危害。

Sex lures trapping method was used to investigate the occurring period of L. glycinivorella in Heihe region from 2009 to 2012. The results showed that L. glycirtivorella occulted in the middle of July and ended in mid-August,lasting about 30 days. The occurrence of L. glycinivorella showed multiple peaks, and the main peak generally appeared in the July 23-29. In 2011 ,the peak delayed about 10 days due to climate. In 2009-2012 the insect feed rate of L. glycinivorella in Heihe area was 5.53%-11.26% ,belonging to mild to moderate damage.