The reciprocating powered-cutter wheat no-till planter,which has the functions of residue-cutting,seeding and bed-renovating,was designed based on the problems of residues blocking and seriously damaged bed shape during the planting of wheat in maize stubble coverage fields under the condition of permanent raised beds(PRB)in irrigation agricultural region of northwest China.

The conservation tillage patterns under ridge plowing were carried out in cold,windy and sandy areas of Northeast China.

Compared with non-controlled traffic with conservation tillage(non-CTCT),gas emission reduced significantly,consisting of two aspects.

Advances and prospect of research on protective tillage techniques in arid areas

existing in Yanmenguan Ecological Animal Husbandry Economic Region, this paper puts forward some counter measures and suggestions of carrying out the protective tillage and improving the ecological conditions.

This paper makes comparative experiments of corn s protective tillage and traditional tillage,points out that the protective tillage possesses obvious moisture holding,impounding and yield increasing effect,and makes research and test on the BMQF-4C type corn s till-less blanketing sower.

The study on the current situation and the development trend of the conservation tillage in China s suburban areas;

Conservation tillage and its effect on soil organic carbon;

The effects of conservation tillage on soil physical properties in the southern part of the MuUs desert;

Influence of protective farming on soil water of wheat field;

On protective farming technique of mechanization in dryland;

In order to protect ecological environment,the author points out that protective farming needs developing when returning farmland to forest and grassland is implemented to develop sustainable mechanization agriculture.