Study on Cotton Production Regional Assessment System of Xinjiang
Pan Xuebiao1, Li Yu'e2
(1 Institute of Resource and Environment, China Agricultural University, Beijing, 100094;
2 Institute of Agro-meteorology, Chinese Academy of Agricultural Sciences, Beijing, 100081)
Abstract. The Cotton Production Regional Assessment System of Xinjiang is developed to assess the effects of Climate on cotton yield. It is consist of database, simulation model, spatial analysis and map display. The simulation model is the center of this system. The simulation model is based on light energy use, and it contains photosynthetic production, distribution of dry matter, leaf area growth, yield forming and other process. That the effects of weather, soil, variety and management on cotton growth and development was considered in this model. The model is validated by comparison with field data from variety and density levels at Shache(Yarkant) and statistic lint yield per hectare. The result showed that the trends of simulated total dry matter weight of cotton plant and LAI were consistent with actual, and the Agreement Index of lint yield in field test at shache is 0.93. The biases of simulated mean lint yield of typical location and 5 cotton regions from 1991 to 1996 were -0.3% and -2.3%, respectively. The model may be useful as component of Assessment System for Effects of Climate on Cotton Production of Xinjiang.
Keywords: Climate, Cotton, Model, Assessment System
Watching Slides: http://www.ami.ac.cn/Sino_UK/workshop/pan_cotton_model.ppt