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通过对豫西春玉米田婆婆纳 (VeronicacaninotebicullataL)的系统调查 ,澄清了婆婆纳的分布区域 ,摸清了其生物学特性和田间分布型。药剂防除结果表明 :在春玉米播后芽前 ,每公顷用 40 %杀草丹水剂 2 2 5 0ml与 2 5 %绿麦隆可湿性粉剂 30 0 0ml混用 ,防效达 99.46%。
Through the systematic investigation of Vernicacaninotebicullata L in the spring corn field of western Henan, the distribution area of Veronica was clarified and the biological characteristics and field distribution were clarified. The results showed that the control effect of the pesticide was 25 500 ml of 40% diltiazem and 30 0 0 ml of 25% chlorotoluron wettable powder per hectare before the spring maize sowing, the control effect was 99.46%.