Models for simulating crop net primary production(NPP)have been developed well over the last three decades,while few of them are successfully put into practice in the agro-ecosystem of China.The objectives of this paper are to validate an existing model Crop-C developed by the authors,and to estimate crop NPP in China by employing Crop-C.Crop-C was validated against independent measurements from literature and the derived NPP from crop yields documented in national statistical yearbooks.Six crops of rice,wh...