Mathematical model of water-yield potential of dryland crops on South Loess Plateau and its parameters revision

Abstract

Abstract: Amathematical model for calculating the water-yield potential of dryland crops is established, and its main parameters are revised.The methods for calculating crop water consumption and water revision coefficient are also put forward. Based on the calculation, the water yield potential of winter wheat is 5300～6300 kg·hm^-2 and that of spring maize is 7700～9000 kg·hm^-2.In addition, the water condition of dryland is evaluated, which indicates that the east region of south loess plateau has a worse water condition and a greater yield increase potential through irrigation.

Key words: Yield-potential, Mathematical model, Loess plateau, Wheat, Maize, functional feeding group, biotic index, Lancang River basin, benthic macroinvertebrate assemblages

Li Kaiyuan, Li Yushan . Mathematical model of water-yield potential of dryland crops on South Loess Plateau and its parameters revision[J]. Chinese Journal of Applied Ecology, 1997, 8(1): 43-48.

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Mathematical model of water-yield potential of dryland crops on South Loess Plateau and its parameters revision

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