亩用10％草甘膦水剂1～1.5公斤喷雾防除田间杂草,施药后30～60天移栽甘蓝、花椰菜、矮白菜和播种小白菜等,发现甘蓝、花椰菜活后轻者表现主根呈黑褐色,须根腐烂,主根齐土面部分缢缩,其上有部分长出不定根,植株僵 化不发;重者主根腐烂,叶片呈水渍状烂斑,3～5天植株枯死。若将发生药害的植株拔起用水漂洗,再移栽到未用药的田块,仍能恢复正常生长。由此可见,草甘膦喷在土壤中不会立即钝化,如用在空 Mu with 10% of glyphosate spray 1 to 1.5 kg of spray to control field weeds, 30 to 60 days after transplanting cabbage, broccoli, cabbage and sowing cabbage and found that light cabbage, cauliflower after the performance of the main root Dark brown, fibrous roots decay, the main root Qi soil surface partial shrinkage, some of which grow adventitious roots, plant inflexible; severe main root rot, leaves were water-like rotten spots, 3 to 5 days dead plants. If the phytosanitary plant uprooted by water rinse, and then transplanted into the field of non-medication, can still resume normal growth. Thus, glyphosate sprayed in the soil will not passivation immediately, as used in the air