That tillage would release carbon dioxide and methane .
这样的耕作方式当然会减少二氧化碳和沼气的排放。
Fractal behavior of tillage soil surface roughness .
耕作土壤地表不平度的分形特性。
Evaluation of soil quality under conservation tillage via factor and cluster analyses .
基于因子和聚类分析的保护性耕作土壤质量评价研究。
The roundup ready system has helped farmers grow more corn , soybeans , cotton and other crops while reducing detrimental soil tillage practices , killing weeds easily and cheaply .
Jimmy messick : " because the tractor that 's pulling the planter also has the same auto-guidance system in it as the tractor that applied the fertilizer and did this tillage , it will come back and put the seed right on top of these marks . "
