Weed management in the"potato/maize/bean"strip combined planting technology is difficult because of the inconsistency of cultivation time and fertility period of the corps.In particular,there are very few herbicides that conform to this technology.Rimsulfuron,as a herbicide with wide spectrum and good selectivity,has been effectively applied to the planting pattern.In order to accurately evaluate the residual dynamics and safety of rimsulfuron in the"potato/maize/bean"cultivated soil,the residues of rimsulfuron in soil were determined by high performance liquid chromatography(HPLC)simulated in the laboratory.When the dosage was 0.5-2.0 mg/kg,the half-life of rimsulfuron 25%WDG in soil was 7.70-9.50 days.The degradation of herbicide on 9.50 days was reduced to half of the initial settlement dose,and the pesticide residue in soil was only 0.001 8-0.009 0 mg/kg after 42 days of application.To ensure the safe use of rimsufuron and minimize the possible damage,it is recommended to apply rimsulfuron at least 9.50 days before planting other crops.
万方数据
维普
