２００２年又是一个少见的暖冬，这一异常的气候，预示着新世纪第一次厄尔尼诺现象今年春天将再次降临地球，据国家海洋预报中心预测，在我国北方将中等强度的发生，春夏之际易发生高温、干旱穴南方易发生低温、洪涝雪。农业抗旱必须把节水灌溉和其他的方法结合起来，才能真正 2002 is another rare warm winter. This unusual climate indicates that the first El Niño phenomenon in the new century will once again come to earth this spring. According to the prediction made by the National Oceanic Forecast Center, moderate intensity will take place in northern China in spring and summer Occurrence prone to high temperature, drought prone to low temperature in the south, floods and snow. Agricultural drought must be combined with water-saving irrigation and other methods to be real