1风能利用现状人类利用风能作功,据考至少已有1700年的历史,风力提水用于盐业生产及农田灌溉也具有悠久的历史。在热机出现以前,风力排灌对农业生产曾发挥过积极作用。风力机械因 1 The status quo of wind energy utilization of human wind energy, according to test at least 1,700 years of history, wind water for salt production and farmland irrigation also has a long history. Prior to the advent of heat engines, wind irrigation and drainage had played an active role in agricultural production. Mechanical wind machine