农药残留检测员在菜市场上取回一小把韭菜,切碎后加入20毫升提取试剂,震荡1—2分钟后,将上清液倒入试管,静置3—5分钟后加入适量的酶、样本提取液和显色剂,在37—38℃下培养30分钟,最后进行显色反应和仪器测定。检测结果发现抑制率小于70%,证明这把韭菜的农 Pesticide residue inspectors in the vegetable market to retrieve a small chives, chopped add 20 ml of extraction reagent, shock 1-2 minutes, the supernatant was poured into the test tube, rest 3-5 minutes after adding the appropriate amount of enzyme , Sample extract and color reagent, incubated at 37-38 ℃ for 30 minutes, and finally the color reaction and instrument determination. Test results showed that the inhibition rate of less than 70%, prove that the leek farming