Study of Mechanical-Chemical Synergistic Weeding on Characterization of Weed–Soil Complex and Weed Control Efficacy

Mechanical-chemical synergy has been proven efficient in weed control. However, characterizing the state of weed–soil complex after mechanical weeding and revealing its effects on subsequent herbicide application is still challenging, which restricts implementation this technology. This paper first presents a method to characterize from perspectives fragmentation composite characteristics. The regrowth complemented herbicide-reduced spraying control efficacy crop yield were then investigated. results showed that typical diameters complexes 10.67 cm 2.82 inter-row hoe shovel intra-row finger weeding, respectively. There mainly two four states rate corresponding with largest component proportion was 76.91% 18.37%, additional chemical sprayed significantly improved fresh weight 95.12% for preposed 138.07% maize silking stage. mechanical–75% treatment 9.27% higher than treatment. Mechanical creates suitable improves synergistic effect.