为了搞好滴灌的设计工作,我们在1977—1980年先后在石河子和吐鲁番等地,测定几个有关滴灌设计的参数。 一、滴灌计划湿润层深度 滴灌计划湿润层深度是确定滴灌制度的一项重要指标,它应等于作物主要耗水层深度。我们是通过测定在滴灌条件下的作物根系密集层的深度和不同深度的土壤水分消失情况,来确定的。实测各种作物密集根系层的深度见表1。 In order to do a good job drip irrigation design work, we in 1977-1980 successively in Shihezi and Turpan and other places, measured several parameters related to drip irrigation design. I. Drip Irrigation Scheme Depth Drip Irrigation Scheme Depth of wetting layer is an important indicator of drip irrigation system and should be equal to the depth of the main aquifer of crop. We determined this by measuring the depth of the crop’s root-dense layers and the loss of soil moisture at different depths under drip irrigation. The measured depth of various crop-dense roots is shown in Table 1.