西部旱作农业的有效新技术──留茬少耕或免耕秸杆全程覆盖

The paper discusses about the problems and reasons in the agriculture of western China.According to our analysis,it is difficult to overcome limitations from traditional cultivation measures in the western agriculture development.In combination with the local condition of Yan Chuan County,it is the oblingatory selection of western agriculture to implement the cultivation technique of low or non tillage with stubble and whole course straw covering.It is stratigic pint of the technique agriculture in the development of Wester China.It is effective to bring out the latent capacity of dryland farming.