Figure 5

Schematic top (A) and sectional (B) views of VEE-IPBP (1: blocking net; 2: soil ridge at the vegetable field border; 3: border ditch; 4: inter-furrow ditch; 5: plot surface; 6: soil ridge within the plot; 7: blocking net; 8: vegetable; 9: swamp eel; 10: earthworm; 11: water surface).