【摘要】 设计了一种适用于测定作物蒸散量、不影响农田耕作的压 /吸气排水式蒸渗仪。通过对布有 12个该型蒸渗仪的田间进行测试 ,表明蒸渗仪集水效果明显 ,含泥沙量极少更多还原

【Abstract】 A new model of lysimeter was designed, which uses water balance in soil for the determination of plant evapotranspiration, with no or little interference with major field cultivation operations. The drained water was stored in a water tank and the water samples were collected by pressurization or suction method. It indicated that water collecting effect of this lysimeter was evident and sediment content in water was very low by field test of 12 such lysimeters.更多还原