JIA-2019-11

2528 ZHOU Tian-mei et al. Journal of Integrative Agriculture 2019, 18(11): 2521–2533 of nursery environments, particularly in temperature and light. Therefore, how to predict stock quality under different temperature and light conditions of nurseries and how to manage stock quality through environment regulation will 0 20 40 60 80 100 0.000 0.005 0.010 0.015 0.020 A B C D TEP (MJ m –2 ) 0 20 40 60 80 100 TEP (MJ m –2 ) 0 20 40 60 80 100 TEP (MJ m –2 ) 0 20 40 60 80 100 TEP (MJ m –2 ) 0.000 0.003 0.006 0.009 0.012 HI1 G value (g d –1 ) 0.00 0.03 0.06 0.09 0.12 0.15 HI2 0.00 0.03 0.06 0.09 0.12 0.15 HI3 Simulated values Measured values of Jinlingmeiyu Measured values of Hezuo 903 Fig. 4 Validation of G value and healthy index models in tomato seedlings. TEP, thermal effectiveness and photosynthetically active radiation. G value refers to the ratio of whole plant dry mass to days of seedling (eq. (5)); HI1, HI2 and HI3 are different seedling healthy indexes (eqs. (6)–(8)). 0 0.005 0.010 0.015 0.020 0 0.005 0.010 0.015 0.020 Measured G value Simulated G value 0 0.003 0.006 0.009 0.012 0 0.003 0.006 0.009 0.012 Measured HI1 value Simulated HI1 value 0 0.006 0.012 0.018 0.024 0 0.006 0.012 0.018 0.024 A B C D Measured G value Simulated G value 0 0.004 0.008 0.012 0.016 0 0.004 0.008 0.012 0.016 Measured HI1 value Simulated HI1 value Fig. 5 Comparison between simulated and observed values of G value and healthy index 1 (HI1) in tomato seedlings. G value refers to the ratio of whole plant dry mass to days of seedling (eq. (5)).