２１世纪人类面临的共同任务是控制人口，充分合理地利用和保护自然资源，尤其是水、土资源，净化和保护环境。由于科学技术的飞速发展和人类对上述问题认识的提高，未来的农业必然是保护资源与环境、维护生态平衡的可持续发展农业，农业机械发展将具有以下特点：１．农业生产 The common task facing mankind in the 21st century is to control the population, make full and reasonable use and protection of natural resources, especially water and land resources, and purify and protect the environment. Due to the rapid development of science and technology and the improvement of human understanding of these problems, the future agriculture must be a sustainable agriculture that protects resources and environment and maintain ecological balance. The development of agricultural machinery will have the following characteristics: 1. Agricultural Production