Determination of complementary irrigation times for rainfed cultivation based on biomass optimization and soil erosion index in Yellow River Valley

Abstract Drought is the most important factor limiting growth and production of wheat in China. Arid semi-arid regions high water consumption agricultural sector have led to various deficit irrigation strategies. The effect hydrological process on yield has been evaluated rainfed cultivation for three climatic stations Gansu Province, Yellow River Valley, A general framework was provided arid regions. Moreover, best time amount complementary its increasing using grey wolf optimization algorithm. results showed that a humid regime could be suggested without irrigation. Conducting two irrigations semi-humid can increase final by more than 150 kg/ha. maximum yields sustainable management were obtained 4,844, 4,510, 4,408 kg/ha Longnan, Tianshui, Dingxi, respectively.