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

Figure 10

AMOS of structural equation model. Note: the rectangular box indicates the observation variable; e1 ~ e2 are the random values of the observation variables; one-way arrow represents the causal relationship between variables, starting as the cause and pointing to the result. The number above the variable box is the determination coefficient, which indicates the total interpretation rate of the independent variable on the dependent variable. The number on the one-way arrow is the direct effect of standardization. Pn: photosynthetic rate; Ci: intercellular CO₂ concentration; Tr: transpiration rate; Gs: conductance; a: chlorophyll a; b: chlorophyll b; c: carotenoids; MDM: total dry matter accumulation; and Yield: yield.