ditch irrigation

基本解释

I was what, nine years old and they found Earl dead in a irrigation ditch .
我那时才多大，九岁吧，有人发现俄尔死在灌溉圳里。
Analyses research the characteristics of Film—Hole Ditch Irrigation and water flow advance and regression process based on field experiment data.
通过大田试验分析研究了膜孔沟灌的特点和田面水流推进及消退特性；
The result showed that drip irrigation could saved water by 50% than ditch irrigation, and fruit output increase 17%, sugar content increase 1.9%.
结果如下：滴灌试验表明，项目区使用滴灌比沟灌能够减少用水量50%以上，产量提高17%，含糖量提高1.9%。