A dynamic knowledge model for nitrogen and water management of cotton

Abstract

Abstract: Through analyzing and extracting the newest research results on nitrogen and water management of cotton,a dynamic knowledge model for decision-making on total nitrogen and water supply levels and their distribution among main growth stages of cotton under different environments and yield targets was developed,with the principles of nitrogen balance and water demand and by integrating the factors of climate,soil,yield and variety.Case studies on the knowledge model with the experiment data sets of different eco-sites,varieties and soil characters indicaed a good model performance in decision-making and applicability.

Key words: Cotton, Nitrogen management, Water management, Knowledge model

CLC Number:

S11⁺6

ZHANG Huaizhi, ZHU Yan, CAO Weixing, ZHOU Zhiguo, ZHANG Lizhen. A dynamic knowledge model for nitrogen and water management of cotton[J]. Chinese Journal of Applied Ecology, 2004, (5): 777-781.

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