Investigations of the realities of greenhouse water use for irrigation project planning

灌溉工程规划温室用水的现实调查

基本信息

批准号：
06660304
负责人：
YOMOTA Atsushi
金额：
$ 1.28万
依托单位：
OKAYAMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06660304/
关键词：
water requirement greenhouse upland irrigation evapotranspiration 蒸発散用水計画

项目摘要

The objective of this study was to investigate the actual situation of greenhouse water use and its implications for irrigation planning. To achieve this actual water use in both the greenhouse and the immediate surrounding uplands fields were examined. The micrometeorological conditions and the soil moisture content within and outside the greenhouse were measured, and from the micrometeorological data the estimation of the water requirements of some plants were estimated.The experiments conducted are as follows :1) The micrometeorological conditions within and outside the greenhouse at Soja City area (i.e.Egg Plant), Okayama Prefecture, and Daiei Town area (i.e.water melon), Tottori Prefecture, were measured. Also, the soil moisture content and irrigation amount within the greenhouses was measured.In comparing the results the meteorological measurements, the fact that the temperature was high with solar radiation being low within the greenhouse was confirmed. Using meteorological data … More of the greenhouse the Penman equation was used to estimate evapotranspiration of the egg plant and water melon. The results obtained compared fairly well with evapotranspiration estimated from the water balance of the greenhouse. It was concluded that the Penman equation can be used to estimate water use in a greenhouse with a fair degree of accuracy.2) In this study micrometeorological data was collected at Tohaku town (i.e.lawn field), Tottori Prefecture, and Daiei Town (i.e.Broccoli field). Also, soil moisture content and rainfall amount were measured.3) The actual water use situation in the Tohaku Irrigation Project district (i.e.Tohaku town and Daiei town, Tottori Prefecture) was investigated. This involved a comparison between the hourly discharge from farm ponds in the area and the water use at the farm level. Also, a questionnaire was prepared to investigate water use at the farm level in relation to the kind of crop.The investigations revealed that the peak discharge from the farm ponds was in the morning and evening. This, however, did not interfere with the operation and maintenance of the farm ponds. Also, the amount of discharge from the farm pond fluctuated with rainfall amount in which more water was used during long, clear, dry days. The time, amount, and method of water application also differed with respect to the kind of crop, and with respect to whether crops were grown in greenhouses or in the open field. Less

本研究的目的是调查温室用水的实际情况及其对灌溉规划的影响。为了实现温室和周围高地的实际用水情况，我们对微气象条件和土壤湿度进行了研究。测量了温室内外的微气象条件，并根据微气象数据估算了一些植物的需水量。进行的实验如下：1）总社市地区温室内外的微气象条件（即鸡蛋）测量了冈山县大荣町地区（即西瓜）以及温室内的土壤湿度和灌溉量。在与气象测量结果进行比较时，发现温度变化。使用温室内的气象数据，使用彭曼方程来估算茄子和西瓜的蒸散量，所得结果相当好。根据温室的水平衡估算蒸散量。得出的结论是，彭曼方程可用于估算温室中的用水量，且具有相当的准确性。2) 在本研究中，微气象数据是在东伯镇（即草坪）收集的。）、鸟取县和大荣町（即西兰花田），还测量了土壤含水量和降雨量。3）东伯灌溉项目的实际用水情况。对该地区（即鸟取县东白町和大荣町）进行了调查，比较了该地区农场池塘的每小时排放量和农场的用水量。此外，还准备了一份调查问卷来调查该地区的用水量。调查显示，农场池塘的排放高峰期是在早上和晚上，但这并没有影响农场池塘的运营和维护。从农场排放池塘的水量随降雨量的变化而变化，在长、晴朗、干燥的日子里用水量较多。浇水的时间、量和方法也因作物种类以及作物是在温室还是在温室中种植而有所不同。空旷的田野里较少。