According to the national environment

social and economical situation in loess hilly areas

the suitable tillagetechniques with soil and water conservation have been taken. The objectives of storing water

conservating soil

in-creasing fertility and yield

decreasing field in order to plant trees and grasses on slope land

and making the a-griecosystem into favourable circle cap be achieved through applving these techniques. Therefore

on the basis ofplanting. in level furrow in a large range

the experiments have been made to study tillage techniques with soil andwater conservation

which includes covering soil with film;reserving stubble for inversing ridge; putting soil blockin furrow; intercropping and rotation of grass and grain in belt shape and intercropping of grain and grass as well asbush in wider belt on slope land

etc. The benefits of storing water

retainning soil

increasing fertility and yield andincreasing return for every technical measures have been evaluated.