| 1. | Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage
暗管排水条件下土壤特性和作物产量的空间变异性分析 |
| 2. | Application of nitrogen leaching losses mixed simulative model in tile effluent from the drained paddy rice field
暗管排水稻田中氮素淋失动态混合模型及应用 |
| 3. | Experiment and research on seepage effect by underground pipe drainage system of paddy field in saline soil coastland
滨海盐土地区稻田暗管排水效果试验研究 |
| 4. | Several methods of determining the optimal space and depth of subsurface plastic drainage tubes are explicated and summarized in this paper
本文介绍了农田塑料暗管埋深和间距的确定方法，并对之进行了评述。 |
| 5. | Pvc subdrainage is one kind of advanced drainage techniques developed in recent years in the world . it will have a promising future of wide application
塑料暗管是一种新型的排水材料，具有很好的排水效果，应用前景广阔。 |
| 6. | Determining optimal space and depth of the subsurface plastic drainage tubes is a main task in planning and design of a drainage system
农田塑料暗管埋深和间距的确定，是塑料暗管排水系统规划设计的主要任务，关系到排水效果和投资效益。 |
| 7. | The permeability of 12 types of geotextiles , used as sub - drain pipe filters , were tested andcompared under two kinds of soils sampled from ningxia yinbei drainage project area
采用一维和二维渗透模型对土工织物作为农田暗管排水外包滤料进行了试验研究。 |
| 8. | Abstract : the permeability of 12 types of geotextiles , used as sub - drain pipe filters , were tested andcompared under two kinds of soils sampled from ningxia yinbei drainage project area
文摘:采用一维和二维渗透模型对土工织物作为农田暗管排水外包滤料进行了试验研究。 |
| 9. | This task is an important part of a major technical item undertaken by science commission in harbin city which centered around the applied research on the technique of percolation irrigation with zippered plastic buried pipe
本课题是哈尔滨市科委重大科技攻关项目《棚室蔬菜塑料拉链暗管渗灌技术的应用研究》的重要组成内容。 |
