This paper deliberated on the status of pollution brought by chemical fertilizer, pesticides and mulching plastic film, and according to each problem the corresponding treatments were put forward.
分析和探讨了化肥、农药及地膜对我国农田环境的污染状况，提出了控制农业自身污染的对策。
2
Technical economic evaluation on no-tillage with stalks mulching was made with comparative analysis method in this paper.
应用比较分析方法，对免耕整秸秆半覆盖技术进行了技术经济效果评价。
3
To attain such a goal, this paper concludes: Comparing the difference between those who adopt drop irrigation technology of water saving under mulching film and those who do not adopt;