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喷灌时,人造雨的绪构和强度是重要的问题,应使雨滴大小和喷灌强度(降雨强度)不致破坏土壤的结构,不致形成水洼和迳流,并且不损伤作物。所谓适宜的喷灌强度即应在任何情况下都应与土壤的入渗速度相适应,否则,将会随着喷灌强度的增大,土壤结构的破坏愈严重,愈容易形成板结层,愈快地开始发生迳流,并减少土壤的入渗,使湿润深度减小。本文将谈谈有关喷灌强度和土壤入渗速度的几个问题。
During sprinkler irrigation, the texture and strength of artificial rain are important issues. The size of raindrops and sprinkling intensity (rainfall intensity) should not destroy the structure of the soil, prevent the formation of puddles and razor currents, and do not damage crops. The so-called appropriate sprinkling irrigation intensity should be in any case should adapt to the rate of infiltration of soil, otherwise, with the sprinkling irrigation intensity will increase, the more serious the destruction of soil structure, the more easy to form the cork layer, the more quickly Turbulence began to occur and soil infiltration was reduced so that the depth of wetting was reduced. This article will discuss several issues related to sprinkler irrigation and soil infiltration rates.