Special Column 6 Main Indices of Water Development in 2013

所属栏目:水利发展报告

Special Column 6 Main Indices of Water Development in 2013

IndexValue1. Effective irrigation areaAnnual increase63.47 million hm21.55 million hm22. Water-saving irrigation area27.11 million hm23. Waterlogging proof area21.94 million hm24. Soil erosion and water loss treated areaAnnual increase1.07 million km250,0 ......(本文共 2843 字 , 1 张图)     [阅读本文] >>


推荐内容


科普

更多