摘要
As agricultural mechanization is becoming more and more popular, soil compaction, on basis of agricultural machinery, has become a serious problem that can not be ignored. Soil compaction, which is caused by frequent til age and large load in the field, may have different effects on various properties of soil. Soil com-paction may result in different conditions, such as increased soil density and the mechanical resistance, and decreased soil ventilation and the capacity of water holding and storage, but uptaking capacity of chemical elements is restricted. There-fore, soil compaction has some negative impacts on soil properties, physical y, chemical y, or biological y, as wel as plant growth. This research analyzed the cause and the harm of soil compaction in recent years, and some effective mea-sures were proposed to improve soil compaction, in order to reduce the extent of soil compaction caused by agricultural machinery.
近年来,农业机械化作业越来越普遍,随着农业机械的不断发展,农田机械土壤压实已逐渐成为一个不容忽视的问题。农业机械多次或大载荷作业造成的土壤压实都会对土壤的各种性能产生不同程度的影响。土壤压实会使土壤容重增加,机械阻力增大,持水和蓄水能力以及土壤通气性下降,同时影响农作物对化学元素的吸收。因此,土壤压实对土壤的物理、化学、生物特性及农作物的生长都会产生很大的不良影响。本文分析了近年来产生土壤压实的原因和土壤压实的危害,并在此基础上提出了改善土壤压实的有效措施和技术方法,以期减轻农业机具对农田土壤的压实程度。
