引言在昆士兰的北部糖厂范围,过多的地下水是妨碍甘蔗良好生长最为明显的因素。近年来,由于大大超过了年平均降雨量,特别是在甘蔗生长的临界期,这种情况变得更为明显。这种趋势向新垦地扩展,而这些新垦地大多排水不良,也就使这个问题更为突出。 Introduction In the northern sugar mills of Queensland, excessive groundwater is the most obvious factor that hinders the good growth of sugarcane. In recent years, this has become even more apparent as the average annual rainfall has been greatly exceeded, especially at the critical stage of sugar cane growth. This trend has been extended to new reclamation sites, and most of these newly reclaimed lands are poorly drained to make this issue even more conspicuous.