Abstract：China is one of the countries with scarcest farmland per capita in the world,which is only 0.0933hm2 accounting for less than 40% of the world average level.In the meantime,our country is also one of the countries with most serious problem of cultivated land soil erosion,it’s area is 40.33 million hm2 occupying 33.15% of total cultivated land of the whole country.Only the annual soil loss of the slope cultivated land is about 1.5 billion tons making up 33% of total soil loss of the whole country.The soil erosion has constituted serous threat to food security,ecological security,social and economic sustainable development in our country.The paper expounded the important significance,generation and development,major techniques contents and models of conservation tillage in the field of soil and conservation.Developing conservation tillage technique is a new concept of soil and conservation and has an important significance to effectively control farmland soil erosion.
2010, Vol. 8 
