1. Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, College of Geography and Environmental Science Henan University Kaifeng China
2. Key Laboratory of Cultivated Land Conservation in North China, Ministry of Agriculture, College of Land Science and Technology China Agricultural University Beijing China
3. Section for Crop Sciences, Department of Plant & Environmental Sciences University of Copenhagen Tåstrup Denmark
4. Bijie Tobacco Company of Guizhou Province Bijie China