立体种植是提高资源利用率、土地产出率和农田综合经济效益的重要途径。近几年，各地搞立体种植的积极性很高，以如东县为例，全县棉田夹套种面积正常保持在一万公顷以上。根据以往立体种植的经验教训，我们经过调查研究后认为，立体种植必须坚持三个原则，注意四个问题。... Three-dimensional planting is to improve resource utilization, land productivity and comprehensive economic benefits of farmland an important way. In recent years, the enthusiasm for planting in various places is very high. Taking Rudong County as an example, the area of ​​the jacket of cotton fields in the county is normally maintained at more than 10,000 hectares. According to the previous experience of three-dimensional planting, after our investigation we believe that the three-dimensional planting must adhere to the three principles, pay attention to four issues. ...