| 1. | Trickle irrigation conservers water where limited .
滴灌在水少的地方应用起来可省水。 |
| 2. | Perspective analyses on film trickle irrigation application and the present status of treating alkali soil
膜下滴灌技术应用与土壤盐碱化治理的现状及前景分析 |
| 3. | Low pressure trickle irrigation is based on the little effect of pressure on the quality of drip irrigation system
压力水头对滴灌系统的灌水质量影响很小，这为低水头滴灌提供了理论依据。 |
| 4. | Low pressure trickle irrigation is popular with farmers . currently , the study direction of drip system is to develop low pressure emitters
当今，研制大流量的压力补偿式灌水器是低压滴灌研究的方向。 |
| 5. | Trickle irrigation is regarded as a significant technology of water - saving irrigation , because we can exactly control the quantity of irrigation water , decreasing ground evaporation and deep - seated leak
滴灌系统作为一种优秀的节水灌溉技术，它能够精确的控制灌溉水量，减少地面蒸发和深层渗漏。 |
| 6. | In addition , similar analyses on soil water and salt characteristics in insufficient trickle irrigation were conducted . all these laid foundation for studying and analyzing the same problems in temperature fields
此外，对滴灌非充分供水入渗过程的水盐变化规律做了类似的分析，从而为考虑温度梯度作用下的同类问题研究与分析打下基础。 |
| 7. | When the area of little irrigation district is constant , drip line of trickle irrigation has the optimizing length . if the length of drip line is longer or shorter than the optimizing length , the expense of trickle system increases
一般认为，毛管长度越长，则滴灌系统造价相应就会减少，因此，在优化设计时，通常认为毛管取最大长度。 |
| 8. | Drip irrigation under mulch is a advanced technique combined by the trickle irrigation technique and the polyethylene film planting technique , which have the advantages of saving water , enhancing yields , upgrading quality and high utility
膜下滴灌是当今世界最先进的滴灌灌水技术和覆膜种植栽培技术相结合的产物，同传统的灌水方式和栽培技术相比较具有节水、高产、优质和高效的优点。 |
| 9. | Distinct mankind ' s effect of the 60 ’ s , because of greatly opened up strategy implementation in the west in the near future , retreating the straw and limiting to pasture and usage of trickle irrigation , that each steps such as above and so on wholly shall benefit to the farming water amount to be saved , thereby add into the amount of flow in lake
不同于上世纪60年代的人类活动作用的影响,近期由于西部大开发战略的实施,退地还草、限制放牧、滴灌农业的推广等措施都将有利于流域农业耗水量降低,从而增加入湖径流量。这一阶段湖泊水面急剧增加是气候干湿变化的自然现象,与农业节水因素没有显著的关系。 |
| 10. | Many factors have effect on irrigation uniformity . with the growing of pressure , how is irrigation uniformity of trickle irrigation varying on different condition of the diameter of drip line , the distance of emitters , the length of drip line , the style of emitters , the flux ratio of emitters and the face gradient of little irrigation district . the consequence shows that pressure has puny effect on irrigation uniformity
滴灌系统的灌水均匀度受众多因素的影响，本文通过毛管的管径、滴头间距、毛管的管长、灌水器的类型和灌水器的流量系数不同的情况下，灌水均匀度随压力水头变化模拟结果显示，压力水头对灌水均匀度影响非常小。 |
