春小麦皮蓟马田间发生规律研究

Study On The Regularity Of Growth On The Spring Wheat

小麦皮蓟马在本地1年发生1代,以成虫在田边杂草上越冬。每年的5月末春麦田中始见越冬成虫,6月中旬为越冬成虫发生高峰期,7月初越冬成虫消失。6月23日左右始见若虫,7月中旬为若虫发生危害高峰期,而后若虫数量逐渐减少。7月中旬左右出现第一代成虫,随小麦成熟陆续转移至田边杂草上为害并越冬。

Haplothrips tritici kurdjiumov occurs one generation per year, the adults hibernate on the weed. The hibernation adults occur the end of May in spring wheat field, the flourishing stage of the hibernation adults are in the middle of June, hibernation adults disappear at the beginning of July. Nymph occurs about on 23, June, the damaging flourishing stage of the nymph occurs in the middle of July, after that, the number of nymph decrease. The adults of the first generation appear in the middle ten days of July, then move to weed to damage and hibernate.