Effect of small wheel tractor and crawler tractor on soil physical properties
Effect of small wheel tractor and crawler tractor on soil physical properties
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小轮式拖拉机和履带式拖拉机对土壤物理性质的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Changying
中科院分区：
文献类型：
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作者：
G. R. Mari;J. Changying
两轮小型拖拉机和履带式拖拉机在中国发展迅速。在这项研究中，这些相对较小的拖拉机和履带对压实的粘壤土在中国东南部的影响进行了调查。以贯入阻力（Rp）和容重（ρ B）为土壤压实指标，在3个样带上研究了1次、2次和4次贯入的土壤贯入阻力（Rp）和容重（ρ B）。研究了土壤含水量与Rp的关系、轮式拖拉机与履带式拖拉机引起土壤压实的比较、拖拉机质量对压实的影响、拖拉机通过次数和耕作方式对Rp的影响以及压实对土壤的影响。与轮式拖拉机相比，履带式拖拉机由于该系统所需的通行次数增加而产生更紧凑的犁层。履带拖拉机的Rp值显著高于轮式拖拉机。在玉米收获后的田间，在0-5，510和10-15厘米的深度间隔的Rp值进行了调查。随着我国机械化耕作的发展，确定了各性状间的平均值。土壤压实问题可能会显著增加，导致在田间使用更多通道。
The use of the two-wheel small tractors and crawlers’ tractors developed rapidly in China. In this study it was investigated the impact of these relatively small tractors and crawlers on compaction of a clay loam soil in south east China. Penetrometer resistance (R p ) and bulk density (ρ b ) due to one, two and four passes were studied in three transects, using soil penetration resistance (R p ) and bulk density (ρ b ) as soil compaction indicators. The relationship between soil water content and R p , the comparison of soil compaction induced by wheel tractors and the crawlers, the effect of tractor mass on compaction, the effect of number of tractor passes and tillage on R p , and the effect of compaction on soil was studied. Compared with wheel tractor, the crawler tractor created a more compacted plow layer due to increased passes required with this system. Crawler tractors had significantly higher R p than wheel tractor. After trafficking in a corn harvested field, the values of R p were investigated in the 0-5, 510 and 10-15 cm depth intervals. With the development of mechanical tillage in China, mean values between properties were determined. The problem of soil compaction may be significantly increased, causing use of more passes in field.