| 1. | Analysis on surge flow ditch irrigation technique in mountain area 丘陵山区波涌沟灌技术要素分析 |
| 2. | Research on hydraulic and automatic equipment of surge flow irrigation 水力自动波涌灌溉设备的研究 |
| 3. | Upper left is the practice of surge irrigation . below is the surge valve made by iwhr 右下图为中国水科院研制的波涌控制阀。 |
| 4. | The calculation example shows that the method is simple and effective 该研究成果为波涌畦灌技术要素设计和灌水质量评价奠定了基础。 |
| 5. | Water requirement forecast for rice from well irrigation on the basis of time series analysis method 基于井灌区管道输水系统的波涌灌技术 |
| 6. | Aimed at the landform and the shortage of water resource in hilly mountain areas , the field experiments of surge furrow irrigation and continuous irrigation were carried out 本文针对丘陵山区地形和水资源短缺等特点,采用正交试验设计进行波涌灌和连续灌田间试验。 |
| 7. | We distributed master s sample booklets to the villagers , and the number was just right . this again gave testimony to the fact that master arranges everything perfectly in advance 在分发食物的时候也是井然有序,但人潮一波波涌至,我们开始担心食物可能不足的问题,但最终还是人人有份。 |
| 8. | Abstract : based on the principle of balance of surface irrigation water volume , a method for determination of field average infiltration parameter according to the irrigation data is introduced 文摘:本文根据水量平衡原理,提出了利用大田畦灌灌水资料推求土壤入渗参数的方法,在此基础上,又提出了利用波涌灌水流推进和消退资料确定间歇入渗减渗率系数的方法。 |
| 9. | Based on the data , infiltration parameters k , , ai and bi were obtained according to the flow advance and recession course of the stream in the furrow , on the base of which , the model of surge furrow irrigation was set up 基于田间实测的田间入渗及灌水试验资料,利用灌水沟水流推进、消退过程,求得波涌灌入渗参数k , a , a _ i和b _ i ,并由此得出波涌灌的入渗模型。 |
| 10. | And then , the irrigation performance including irrigation efficiency , application efficiency and distribution uniformity were evaluated by using infiltration parameters and soil parameters . the results indicate surge furrow irrigation is suitable to hilly mountain areas 利用入渗参数以及田间基本参数,对灌水质量:储水效率e _ n 、灌水效率e _ a和灌水均匀度e _ d进行了评价,评价结果表明在丘陵山区适宜进行波涌灌溉。 |