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首页> 外文会议>ACIAR Proceedings no.116; CARDI International Conference on Research on Water in Agricultural Production in Asia for the 21st Century; 20031125-28; Phnom Penh(KH) >The development of tube-well irrigation systems in Cambodia
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The development of tube-well irrigation systems in Cambodia

机译：柬埔寨管井灌溉系统的发展

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摘要

The use of tube-wells for irrigating rice has been a recent development in several southern provinces in Cambodia. The first dedicated tube-well for irrigating rice was installed in the Prey Kebas district, Takeo province in 1995. During the next three years more than 1000 wells were dug and today it is estimated that between 2000 and 3000 wells are sourcing water from the underground aquifer near the Bassac River. Annual crop yields increased from 1.5 to 6 t ha~(-1) and annual financial returns from $100 to $550 ha~(-1). In 1999 the Cambodia-IRRI-Australia project conducted a tube-well survey monitoring 62 wells in a 1200 km~(-2) area in Kandal and Takeo provinces. Well depth was monitored every month for a 12-month period. This survey was repeated in 2002 to determine the effect that the increased use of tube-wells was having on the underground water level. The results followed a similar recharge and draw-down pattern for each year and indicated that the Bassac River was recharging wells up to 30 km to the west. It also showed that the maximum draw-down depth was about five metres, which is the limit from which centrifugal pumps can draw water. The results of this study provide information that may help authorities develop a policy on underground water usage in Cambodia.
机译：在柬埔寨的几个南部省份，使用管井灌溉水稻是最近的发展。 1995年，在武雄市的Prey Kebas地区安装了第一座用于灌溉水稻的专用管井。在接下来的三年中，挖了1000多口井，如今估计有2000至3000口井从地下取水巴萨克河附近的蓄水层。每年的农作物产量从1.5吨ha〜（-1）增加到每年550美元〜550美元（-1）。 1999年，柬埔寨-IRRI-澳大利亚项目进行了一次管井调查，监测了坎达尔和武雄省1200 km〜（-2）地区的62口井。每月监测一次井深，为期12个月。 2002年再次进行了这项调查，以确定管井使用量的增加对地下水位的影响。每年的结果遵循类似的补给和提水模式，表明Bassac河正在补给距西部30公里的水井。它还显示最大汲取深度约为5米，这是离心泵吸水的极限。这项研究的结果提供的信息可能有助于当局制定柬埔寨的地下水使用政策。

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