]*>","")" /> Investigation on the Occurrence Dynamic State of Insect Pest in Podding Stage in the Seed-breeding Field of Medicago sativa L.cn.Beijinag
Xinjiang Agricultural Sciences

• Article • Previous Articles     Next Articles

Investigation on the Occurrence Dynamic State of Insect Pest in Podding Stage in the Seed-breeding Field of Medicago sativa L.cn.Beijinag

WANG Jian-guo;CUI Guo-ying;SHEN Tian-ying;ZHANG Ai-qin   

  • Received:2008-06-25 Revised:2008-06-25 Online:2008-06-25 Published:2008-06-25

北疆苜蓿种子田结荚期虫害发生动态研究

王建国;崔国盈;沈田英;张爱勤   

  1. 塔城地区草原站,塔城市,834700;乌鲁木齐市草原站,乌鲁木齐,830001;新疆维吾尔自治区草原站,乌鲁木齐,830049;新疆大学生命科学与技术学院,乌鲁木齐,830046





摘要： 在结荚期不同阶段对苜蓿种子田虫害发生动态进行研究,结果显示:(1)苜蓿虫害在结荚初期已经发生,荚果内种子的虫蚀率由结荚初期的(9.85±1.67); 增加到结荚末期的(52.85±1.46);.随着果熟期的推迟,虫害不断加剧.(2)从幼虫发生情况看,其数量相对稳定,并且在花序中的分布是随机的,没有明显的位置效应.荚果内种子虫蚀率的增加主要是由于幼虫的采食量增加所致.(3)虫蚀率过高与初花期传粉不足成为当地苜蓿种子产量的两个重要制约因素.