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由于新修梯田不同程度的打乱了表土层,黑龙江省水土保持所克山实验站曾对新修梯田切、填土部位的土壤理化性质差异进行了对比试验,结果转载于下: (一)土壤通透性的差异:根据一九七三年秋修梯田的测定:填土部位0-40厘米土层平均透水速度为14.0毫米/分,切土部位透水速度为1.84毫米/分。 (二)土壤温度差异:据该站对一九七五年春修梯田的观测,在作物播种的幼苗期,填土部位0-5厘米土层的日平均温度比切土部位高2.1-2.9度,5-10厘米土层高3.2-3.7
As the newly-built terraces disrupted the topsoil in varying degrees, the Keshan Experimental Station of Soil and Water Conservation in Heilongjiang Province conducted a comparative test on the difference in the physical and chemical properties of the soil in the newly-repaired terraced and filled-in areas. The results are reproduced as follows: Differences in Soil Permeability: According to the 1973 autumn terraced test, the average water-permeable velocity of soil layers 0-40 cm at filling site was 14.0 mm / min and that at cut-soil section was 1.84 mm / min. (B) soil temperature differences: According to the observation of the station on the spring terrace cultivation in 1975, at the seeding seedling stage, the daily mean temperature of the 0-5 cm soil layer at the filling site is 2.1-2.9 degrees higher than that of the soil cutting site , 5-10 cm soil layer high 3.2-3.7