Observation of Water Use in an Irrigated Cotton Field in Xinjiang, China

JIRCAS Journal
ISSN 13407686
NII recode ID (NCID) AA11030483
Full text

The water use in a conventionally-managed cotton field was observed in an arid region in Xinjiang Uygur Autonomous Region, P.R.China.
Evapotranspiration and transpiration rates of the cotton community (ET, Tr) were measured by the Bowen ratio method and the stem heat balance method, respectively. Evaporation from the soil surface under the cotton canopy was calculated by the formula: Ep = ET - Tr. Soil moisture was monitored by soil samplings.
Evaporation from the soil surface, i.e. loss of water that did not contribute to the cotton production, was substantial after irrigation. The empirically-determined interval of irrigation was too short and irrigation tended to be applied even when soil moisture was available. The amount of water supplied each time irrigation was applied was larger than that necessary for crop production, and a considerable amount of water was lost by downward percolation. A water balance calculation was undertaken for determining the suitable amount of water and interval of irrigation.

Date of issued
Creator Ryoji SAMESHIMA Lisong TANG
Subject Xinjiang evaporation transpiration evapotranspiration furrow irrigation cotton
Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 4
spage 89
epage 97
Rights Japan International Research Center for Agricultural Sciences
Language eng

Related Publication