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为了测定在埃塞俄比亚北部石埂梯田对田间作物产量及其收益的影响效果，在试验流域内分别布设了７０个修石埂梯田与未修石硬梯田的试验小区，种植小麦和蚕豆。在每个石埂梯田小区内划出两个相互平行的正方形（面积为 ８ｍ２），一个在石埂梯田上方作为土壤积累区；另一个在上一级石埂梯田的下方作为土壤流失区；在每个未修石埂梯田小区内也划出一个正方形作为对照区。试验结果表明：（１）土壤积累区的作物产量、秸杆产量显著高于土壤流失区或对照区；（２）土壤积累区的作物产量、秸秆产量变化比对照区的稳定；（３）石埂梯田（设计标准超过３０ａ）的回收率达到５０％，几乎等于埃塞俄比亚地区报导的农民贴现率。
In order to determine the effect of stony terraced rice fields in northern Ethiopia on field crop yields and their returns, 70 trial plots of stone-framed terraces and hard-rock-free terraced fields were planted in the trial basin to grow wheat and broad beans. In each stone terraced plot plot draw two parallel squares (area 8m2), one above the terraced rice terraces as soil accumulation area; the other in the upper level stone terraces below as a soil loss area; in the Each unfinished stone terrace terraced area also draw a square as a control area. The results showed that: (1) The crop yield and straw yield in the soil accumulation area were significantly higher than those in the soil loss or control area; (2) The crop yield and straw yield in the soil accumulation area were more stable than those in the control area; (3)回 Terraced fields (design standards over 30 years) achieved a 50% recovery rate, almost equal to the peasant discount rate reported in Ethiopia.