| Pot experiments were conducted to investigate toxicity effects of sulfometuron methyl on vegetables on analyzing inorganic matter and sulfometuron methyl contents in groundwater.It provided basis for pollution area to prevent contamination in agriculture production.Research results showed that vegetables were damaged at pollution area by sulfometuron methyl.That groundwater polluted by sulfometuron methyl had obvious effects on biological properties of Chinese cabbage and lettuce.The leaves of Chinese cabbage became yellow,and plant height and breadth were both lower than that of control treatments.The new leaf of lettuce appeared toxicity symptom such as crimple,distort and losing green becoming yellow,and the old leaf scorched.The lettuces grew sluggishly,and some plants that contaminated seriously died.The plant height,root length,the diameter of stalk,number of leaf blade and total acreage of lettuce that treated by polluted groundwater were all lower than that of control treatment.The analyzed results showed that chlorophyll contents decreased and specific conductance increased when Chinese cabbage and lettuce were treated by polluted groundwater,and biological yields decreased.Variance analysis expressed significant difference or very significant difference. |