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两年来,我们对水田土壤的机械耕作问题,进行了广泛的系统调查研究,并对与农机没计运用和土壤管理有密切关系的土壤物理性质、机械行走机构在水田土土壤中的性能,进行了田间试验和测定。观测证实:机械耕作条件,引起土壤破坏的有机械、土壤和人为等三个因素,在不同地区、不同土壤和不同的管理措施,破坏表现有差异。粘质田为扩大泥脚变化幅度和深度,引起打滑、陷车。而砂质田使耕作层变浅,犁底层加深且压实。使土壤退化原因,与其说是机械耕作反复作用,破坏犁底层,不如说是人为搅动和不合理的土壤管理作用。
In the past two years, we conducted extensive systematic investigations on mechanical farming of paddy soils. We also conducted a study on the physical properties of soils that are not closely related to the use of agricultural machinery and soil management, the performance of mechanical walking mechanisms in paddy soil, Field trials and assays. Observations confirmed that: mechanical farming conditions, soil damage caused by mechanical, soil and human factors such as three in different regions, different soil and different management practices, there are differences in the performance of damage. Muddy field to expand the range and depth of mud changes, causing slippage, trapped car. The sandy field makes the tillage layer lighter, plow deepened and compacted. The reason for soil degradation is not so much mechanical mechanization as repeated action to destroy the bottom of the plow, but rather as a result of artificial agitation and irrational soil management.