Effect of Microsprinkler Irrigation under Plastic Film on Photosynthesis and Fruit Yield of Greenhouse Tomato

Figure 2

Schematic diagram of greenhouse layout. Note: 0: water tank; 1: the pump (WQD10-12-0.75S, PEOPLE PUMB, Corp., Shanghai, China); 2: filter; 3: backwater valve; 4: electromagnetic flowmeter; 5: pressure gauge; 6: capillary; 7: tomato; 8: capillary valve; 9: plastic screens.