5Condon A G, Richards RA, Farquhar GD. Carbon isotope discrimination is positively correlated with grain yield and dry matter production in field-grown wheat[J]. Crop Sci, 1987,27: 996-1001.
7THOMSON S J.Modle-based irrigation management using a dynam- icparameter adjustment method[J].ccmpute" and electronics in agriculture, 1998(2) :256-270.