In recent years,soil mechanized compaction is becoming an increasingly prominent problem with the rapid development of agricultural mechanization.Through the analysis of the reasons of soil compacti oncaused by tractor-unit's shaft load,pass numbers and operation in wet soil,the soil changes were expounded including physical properties of soil bulk density,hardness,porosity,moisture content and so on,which caused the increase of the tractor-unit operation resistance and the raise of fuel consumption,and a negative impact on crop growth.Some synthesized measures were put forward,including agricultural mechanization techniques such as the operation system of fixed path,the reduction of machine mass,the use of low-pressure tires,avoiding operation in high humidity field and adopting joint operations,as well as agronomic techniques such as increasing soil organic matter and crop rotation,to improve soil compaction,ensure sustainable agricultural development and obtain better results of crop production.
NETL
NSTL
维普
万方数据
