摘要
西宁地区危害蚕豆的主要害虫在苗期和分枝期为绿盲蝽,虫口密度分别为0.04头/株和0.64头/株;现蕾期和开花期主要害虫为蚕豆蚜,虫口密度分别达到3头/株和52.6头/株;结荚期为蚕豆蚜和四星萤叶甲,虫口密度分别为3.56头/株和3.24头/株;成熟期主要是四星萤叶甲和宽碧蝽,虫口密度均为0.62头/株和0.42头/株。为害豌豆的害虫在整个生育期均以南美斑潜蝇为主,其虫口密度在开花期最高,达98.12头/株,危害最重。
The Lygus lucorum was main pest in horsemen whose pest density was 0.02 per plant and 0.64 per plant respectively during seedling time and divarcating stage.The Aphis medicaginis mainly atlantes horsebean during buds occurring stage and blooming stage and its pest density reached 3 per plant and 5.3 per plant respectively in that time;the Aphis medicaginis and Monolepta quadriguttata and Palomena virdissima were prevailing in field pest density were at 0.62 per plant and 0.42 per plant.The Liriomyza huidobrensis was the main pest in pea in whole growing period and its pest density was the thickest and the most virulent in blooming stage.
出处
《青海农林科技》
2004年第1期1-3,共3页
Science and Technology of Qinghai Agriculture and Forestry
