农业机械学报2024，Vol.55Issue(7)：232-240,259,10.DOI:10.6041/j.issn.1000-1298.2024.07.022
基于地块面积和形状的土地整治机械旋耕效率研究
Mechanical Tillage Efficiency of Land Consolidation Based on Plot Area and Shape
摘要
Abstract
In order to quantify the difference in mechanical tillage efficiency of plots with different areas and shapes,and scientifically evaluate the potential of land improvement in mechanical tillage efficiency,a set of standard plots was designed,and a 69.83 kW Dongfanghong LX950 tractor supporting rotary tiller was selected for tillage,with a working width of 200 cm.The mechanical rotary tillage efficiency of plots with different area gradients and shapes was measured by field experiment.On this basis,the coupling relationship and function model of the plot area,shape and mechanical rotary tillage efficiency were established based on regional scale,and the regional mechanical rotary tillage efficiency was modified.The results showed that the regularity of plot shape affected the mechanical rotary tillage efficiency.The more regular the shape was,the higher the mechanical rotary tillage efficiency was.In the same area gradient,the mechanical rotary tillage efficiency of rectangular plots was the highest,followed by trapezoidal plots,and triangle plots were the lowest.With the increase of the land area,the mechanical rotary tillage efficiency was increased continuously.When the land area reached a certain degree,the mechanical rotary tillage efficiency tended to be stable.When the land area exceeded 7 000 m2,the mechanical rotary tillage efficiency basically remained unchanged.The mechanical rotary tillage efficiency of rectangular and trapezoidal plots was higher,maintaining at 0.25 s/m2;the mechanical rotary tillage efficiency of other shaped plots was lower,maintaining at about 0.30 s/m2.The mechanical rotary tillage efficiency at the unit level in the case area was 0.27 s/m2.Among them,the number of low-efficiency land units was the least,accounting for 7.10%.The number of efficient land units was the largest,accounting for 58.24%.The mechanical rotary tillage efficiency in the western part of the case area was greater than that in the eastern part of the case area,mainly because the land fragmentation degree in the eastern part was higher than that in the western part,the land unit area was smaller and the shape was not regular,which greatly reduced the regional mechanical rotary tillage efficiency value.The experimental results showed that plots with an area greater than 7 000 m2 were suitable for large-scale mechanized farming,and both the plot area and the regularity of the shape affected the efficiency of mechanical rotary farming.While expanding the plot area,the land regulation project also needed to ensure the regularity of the plot shape.关键词
机械旋耕效率/地块面积/地块形状/地块单元/土地整治Key words
mechanical tillage efficiency/plot area/plot shape/plot unit/land consolidation分类
经济学引用本文复制引用
郑慧慧,杜宁,魏宸博,张超,徐艳..基于地块面积和形状的土地整治机械旋耕效率研究[J].农业机械学报,2024,55(7):232-240,259,10.基金项目
国土资源部公益性行业科研专项(201411009) （201411009）
