六、毛管联系断裂湿度毛管联系断裂湿度是蒸发时,土壤液态水的毛管移动基本停止时的湿度。毛管悬着水从其最大量即最小持水量开始蒸发,在上部水分逐渐减少时,中下部的水分则沿着土壤的毛细管孔隙源源不断地向蒸发面补充,当水分含量降到一定程度,土体内的毛细管水上下的联系便开始断裂,水分就不再能整体地向蒸发面移动了,这个转折湿度就是毛管联系断裂湿度。毛细管水从相互连接转而断开的过程,从全剖面讲,不可能上下同 VI, capillary contact breakage capillary contact breakage humidity is evaporation, the soil moisture when the capillary movement of liquid water basically stopped. Capillary suspended water evaporates from its maximum volume, ie, the minimum water holding capacity. When the upper water gradually decreases, the moisture in the middle and lower reaches is continuously replenished to the evaporation surface along the capillary pores of the soil. When the moisture content drops to a certain extent, Capillary water up and down the body will start to break the link, the water can no longer be the overall movement to the evaporation surface, the transition humidity is capillary contact breakage humidity. Capillary water from the interconnection turn off the process, from the full profile, it is impossible to up and down the same