| 词汇 | 中下游 |
| 释义 | 中下游 This paper deals with the comparative analysis of the microflora, soil nutrient and crop yield on the waste slope of the upland red soil in the middle and low reaches of Yangtze River. This article analyses the soil and land use in Lower-and-Middle section of Yangtze River using map analysis from the angle of agriculture development. On Thursday, Xinhua said that rainfall along the middle and lower reaches of the Yangtze was down 40 percent to60 percent from the average, with the totals being lower than at any time since1951. To discuss the land developing affecting ecology environment in middle and lower reaches of Tarim River, researches and analyzes its reason and raises appropriate protecting countermeasure. Water, sediments, soil and fish were got from the middle and lower reaches of Wujiang River for the analysis of their mercury contents to study the spatial distribution of mercury in the basin. Because of the engineering project the development and utilization of groundwater in downstream plain area of Huangshui river in Longkou city come to a new level. The Yellow River Civilization has mainly been formed and developed in the middle and the lower reaches which cover loess plateau and North China Plain in natural geography. Surface water resources in Liaohe river basin middle and downstream are poor. The drought in the regions along the middle and lower reaches of the Yangtze has underscored worries about channeling the river’s water to the north. Nanjing is the central city of lower reaches in the Yangtze River , is faced with new good opportunity and challenge in new industrialization process. In the early Qing Dynasty, Sichuan used to export its grain in large amounts to the areas in the lower and middle reaches of the Yangtse River. The construction project of damaged ecosystem in middle-down stream of Tarim River has been brought into Chinese national program of key river management. Geochemical forms of phosphorus in sediments sampled from22 shallow lakes, and the water chemistry in the middle and lower reaches of Changjiang River, China were investigated. The priority is to facilitate navigation on the Gan River, particularly in the middle and lower reaches of the River. In reading, mathematics and science, American15-year-olds languish in the lower half of the OECD rankings for the30 wealthiest countries. The diversity of clonal growth forms has exerted tremendous influence on the distribution of this complex in the middle and lower reaches of the Changj jiang River. The influence of cutting infiltration to groundwater surroundings by impermeable wall of dike in middle-lower reaches of Yangtze River is abroad, and also is a long process. Here, from north to south, are the Northeast Plain, the North China Plain and the Middle-Lower Yangtze Plain. China has many natural lakes, most of them scattered in the Middle-Lower Yangtze plains and the Qinghai-Tibet Plateau. Much of China's Yangtze River region is currently battling the worst drought conditions in50 years. In China today, 94.97 million ha of land are cultivated, mainly in the Northeast Plain, the North China Plain, the Middle-Lower Yangtze Plain, the Pearl River Delta Plain and the Sichuan Basin. When Shanghai note circulated to middle and lower reaches of the Changjiang River, encashment office set up respectively. |
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