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首页> 外文期刊>Journal of Agrometeorology >Estimation of maximum evaptranspiration for cotton by modified Penman method and its validation with Lysimetric data
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Estimation of maximum evaptranspiration for cotton by modified Penman method and its validation with Lysimetric data

机译：用改进的Penman方法估算棉花的最大蒸腾量并用测湿数据验证

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摘要

It is a well known fact that estimation of evapotranspiration (ET) of a crop with its distribution among various growth stages has a significant role in efficient water management; crop management and fairly good harvest of crop. Research workers havetried to estimate evapotranspiration in various crops by different methods, mainly include simple gravimetric soil moisture estimation (Dastane, 1967) open pan evaporimeter (Patil, 1978) and Lysimetric method (Mehta and Mistry, 1983). Gravimetric soil moisture estimation is quite cumbersome. Availability of open pan evaporimeter even at research stations is many times an hurdle, even through the method is accurate. However, installation of Lysimeter itself is a very costly affair. Also, they are available only at few stations. Under these circumstances at times, it becomes difficult even for research workers to estimate the crop ET all over different phenophases. In order to overcome, an efforts were made to estimate crop ET by modify Penman method and validate the same with lysimetric data. The method can be employed as it has shows strong validation.
机译：众所周知的事实是，估计作物的蒸散量及其在各个生长期之间的分布在有效的水管理中起着重要的作用。作物管理和作物丰收。研究人员试图通过不同的方法估算各种作物的蒸散量，主要包括简单的重量土壤湿度估算（Dastane，1967），敞盘式蒸发仪（Patil，1978）和Lysimetric方法（Mehta and Mistry，1983）。重量土壤湿度的估算非常麻烦。即使通过该方法是准确的，即使在研究站，敞开式锅式蒸发仪的可用性也是很多障碍。但是，安装测渗仪本身是一件非常昂贵的事情。此外，它们仅在少数几个站点可用。有时在这种情况下，即使对于研究人员来说，也很难估算出不同表相的农作物ET。为了克服这一问题，人们通过修改Penman方法估算作物的ET，并用溶积数据进行了验证。可以使用该方法，因为它具有很强的验证性。

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