摘要
测量了不同工况下的正转旋耕机耕作后土壤的质量百分比 ,获得了对应的土壤破碎的分形维数。结果表明 :耕后地表土块尺寸的分布是一种分形 。
The traditional method to evaluate crushing soil from rotary tillage totally depends on experiments. Because there is no theory to be followed, many parameters about crushing soil can not be determined. The fractal theory is a new one put forward by Mandelbrot in 1980s and we employ this theory to the area of evaluation of crushing soil for the first time. The conclusion is that when the rotary tiller keeps the moving speed constant the fractal dimension increases with rotor speed increasement; when the rotary tiller keeps rotor speed constant the fractal dimension decreases with moving speed increasement. The higher fractal dimension means soil is greatly broken and the small one means lightly broken. The fractal dimension is a critical factor to evaluate crushing soil quality.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2001年第3期31-32,54,共3页
Transactions of the Chinese Society for Agricultural Machinery
基金
山西省青年科学基金资助项目! (项目编号 :9912 0 3)
