This paper reported the test results of a new mixed herbicide “Daotianle” controlling weeds on the paddy field trails.

Residues of oxadiargyl were extracted from rice,rice husk and soil by dichloromethane,purified using mixed column with florisil and activated carbon,and then concentrated extracts were detrmined by gas chromatography on capillary column using an electron capture detector.

Study of the control effect of Topstar in the rice field;