EFFECT OF EVAPOTRANSPIRATION UNDERPREDICTION ON IRRIGATION SCHEDULING AND YIELD OF CORN - A SIMULATION STUDY

被引：0

作者：

STOCKLE, CO ^{[1
]}

JAMES, LG ^{[1
]}

BASSETT, DL ^{[1
]}

SAXTON, KE ^{[1
]}

机构：

[1] USDA ARS, PULLMAN, WA USA

来源：

AGRICULTURAL WATER MANAGEMENT | 1991年 / 19卷 / 02期

关键词：

D O I：

10.1016/0378-3774(91)90006-5

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Underprediction of evaportranspiration (ET) introduces inaccuracies in water balance-based irrigation scheduling procedures. This may reduce crop yield. A simulation study was performed to evaluate sprinkler irrigated corn yield as affected by irrigation schedules resulting from three levels of ET underprediction. Four irrigation uniformity treatments, two soil types, and two weather scenarios in central Washington were also considered. Yield reductions ranging from 1 to 7% and from 8 to 27% were predicted when daily ET was underpredicted by 15% and 30%, respectively. Implications of underpredicting ET in water balance-based irrigation scheduling techniques are discussed.

引用

页码：167 / 179

页数：13

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