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yong yi dong shi di guan ji shu jie jue lei zhou ban dao jing guan qu gan zhe chun han qi de guan gai
Author(s): 
Pages: 47-48
Year: Issue:  2
Journal: Water Saving Irrigation

Keyword:  雷州半岛滴灌技术甘蔗苗井灌区移动式地下水位埋深灌溉滴灌系统时空分布广东省;
Abstract: <正> 一、问题的提出雷州半岛位于我国大陆最南端,年平均降雨量在1360~1770mm,地貌为高台地,土壤为玄武风化岩,透水性大。当地年降雨量时空分布极不均匀,大约10年就有6年出现春旱。当地地下水位埋深较大,在半岛南半部,地下水位埋深约在15m以下,许多地方的井灌区大多管理不善。并未能充分发挥井灌效益。
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