locustn.蝗虫；洋槐；刺槐locust plague forecasting蝗灾预警locust bean gum thickening刺槐豆胶糊Locust witches broom virus刺槐丛枝病毒Locust suction trap machine蝗虫吸捕机locust infestation in Africa非洲的蝗虫灾害Locust egg soil distribution蝗卵土层分布Locust migratoria manilensis东亚飞蝗Locusta migratoria tibetensisn.西藏飞蝗Locusta migratoria migratorian.亚洲飞蝗Locusta migratoria manilensisn.东亚飞蝗