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dan hei he shi ji xie hua kang chun han de zuo yong
Author(s): 
Pages: 119
Year: Issue:  3
Journal: Farm Machinery Using & Maintenance

Abstract:  近几年来,虽然黑河市农业生产取得了较好成绩,粮食连年获得丰收,但是自然灾害发生的频率和强度逐年增加,对黑河市农业生产造成严重影响.如果不采取积极有效措施,将严重影响黑河市的粮食产量,影响农民的收入.据统计,近几年黑河市春季气温变化幅度大,多风、少雨、地下水明显减少,春旱呈加剧趋势,形成十年九春旱.由于黑河市农业基础建设薄弱,水资源储备不足,抗旱工程不配套,水资源利用不合理等原因,都增加了春季抗旱...
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