Waterpotential reflects energy level of soil water and the gradient of waterpotential is an impotent factor describing direction and velocity of water flow.
水势反映土壤水的能态，而水势梯度则是决定水流方向和速度的重要因素。
2
Affected by hydraulic potentialgradient, the unsaturated soil water in the furrow soil may supply laterally the ridge soil of adjacent furrow.
受水势梯度的影响，犁沟内非饱和水可以侧向补给相邻畦埂的土壤。
3
Meanwhile, by the influence of water vapor in the process of heating, the gradient of equivalent potential temperature weakened, and baroclinic term also declined, so the total MPV increases.