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首页> 外文期刊>The Journal of Chinese Geography >PELIMINARY ANALYSES FOR CROP WATER CONSUMPTION BY USING LYSIMETER
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PELIMINARY ANALYSES FOR CROP WATER CONSUMPTION BY USING LYSIMETER

机译：LYSIMETER对作物耗水量的初步分析。

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摘要

This paper deliberates on the issue of water consumption (evapotranspiration, ET) of three main crops in North China: wheat, corn and bean, which is mainly related to three factors as indicated by the definition of SPAC system. Water consumption was measured on daily and sometimes hourly basis by Lysimeter, which can be adjusted to have the same groundwater level as that in the field, thus the measurement could serve as representative of crop water consumption for adjacent area. The consumption period for three crops has been analyzed and cumulative deviation from the mean of daily evapotranspiration been used to divide the whole growing period into several parts, which are related to but different from the growing periods.
机译：本文探讨了华北地区三种主要农作物（小麦，玉米和豆类）的耗水量（蒸散量，ET）问题，这主要与SPAC系统定义所表明的三个因素有关。用水量测定仪每天（有时是每小时）测量耗水量，可以将其调整为与田地相同的地下水位，因此该测量值可以代表相邻地区的农作物耗水量。分析了三种农作物的消费期，并利用与日蒸散量的累积偏差将整个生长期分为几个部分，这些部分与生长期有关，但与生长期不同。

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