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为了灌溉的设计、管理和确定水权,需要使用蒸散数据.灌溉的过程就是用水来满足植物蒸散的需要.本文的目的是探讨可能改进灌溉系统的设计与提高管理水平的研究领域或课题.为了改进蒸散数据在灌溉中的应用,发展有关的技术,现在挑出8个研究重点作为需要进一步研究的课题. 灌溉是我们水资源的主要用途之一.据灌溉学报发表的1985灌溉述评~1),美国约有2400万公顷土地是灌溉的.灌溉最初限于西部的一些州,但在美国东部湿润地区也在迅速发展.在西部,市政、工业和水力发电对水的需求,要求改进灌溉管理,因为灌溉用的水是受限制的.即使在东部,灌溉用的水也可能短缺,尤其在干旱时期. 蒸散量是设计管理灌溉系统的必不可少的一个因素.灌溉就是用水来满足植物蒸散部分的需要必不可少的一个.大量的水用来灌溉草地、果园和观赏植物.但在本文中,灌溉中所用的关于蒸散的研究需要,将着重在农作物的生产方面. 美国农业工程师协会(ASAE)1985年关于蒸散进展的国际会议文集提出了有关最近研究重点的见解.这个文集中的许多文章倾向于用在灌溉方面的蒸散。在灌溉方面,蒸散资料主要用于设计,灌溉调度以及拟订限制用水或不限制用水的管水战略.水权的判决及其转让或出售,常常需要过去、现在和将来的蒸散估算.有效蒸散量减去有效降水量(
In order to design, manage and determine water rights for irrigation, it is necessary to use evapotranspiration data. The process of irrigation is water to meet the needs of plant evapotranspiration.The purpose of this paper is to explore the research fields or topics that may improve the design and management of irrigation systems. Improving the application of evapotranspiration data in irrigation and developing related technologies now selects eight research priorities as topics requiring further study Irrigation is one of our main uses of water resources According to the 1985 Irrigation Review published by Irrigation Journal ~ 1) About 24 million hectares of land are irrigated in the United States Irrigation was initially restricted to some western states but is also growing rapidly in wetlands in the eastern United States.Water demand from municipal, industrial and hydroelectric power plants in the west requires improved irrigation management, Because irrigation water is limited, irrigation water may be scarce even in the east, especially during drought periods. Evapotranspiration is an essential factor in the design of irrigation systems. Irrigation is the use of water to meet plant evapotranspiration The need for an essential one. A lot of water used to irrigate grass, orchards and ornamental plants.But in this article, irrigation The research needs for evapotranspiration, which will focus on crop production, are summarized in the 1985 Proceedings of the International Society of Agricultural Engineers (ASAE) on the Progress of Evapotranspiration which has led to recent research highlights. Many articles in this collection have tended to use Evapotranspiration in irrigation. In the area of irrigation, data on evapotranspiration are mainly used in the design of irrigation schedules and in the development of water management strategies that restrict or limit the use of water. Judgments and transfers or seizures of water rights often require past, present and future estimates of evapotranspiration Minus effective precipitation (