土壤中莠去津对几种农作物安全临界浓度的确定

Determination of Critical Safety Concentrations of Atrazine in Soil to Some Crops

盆栽实验表明 ,土壤中莠去津对大豆、甜玉米、小麦、水稻和甜瓜的安全临界浓度分别为0.7911,1.5360,0.2932,0.0493和0.0879mg·kg-1,水稻和甜瓜的死亡浓度为0.5mg·kg-1。当土壤中莠去津含量低于安全浓度时 ,可促进上述作物生长 ,而高于安全浓度时 。

The critical safety concentrations of atrazine in soil to five crops were studied in greenhouse. The results showed that the critical safety concentrations for soybean, sweet corn, wheat, rice and muskmelon were 0.7911,1.5360,09.2932,0.0493 and 0.0879mg·kg-1, respectively. The lethal concentration of both rice and muskmelon was 0.5mg·kg-1. When the concentration of atrazine in soil was lower than the critical safety concentration, the growth of the crops was stimulated; when it was higher, the crops would be harmed.