利用便携式自动密闭冠层室估算芫荽的作物蒸散量和作物系数

Q3 Agricultural and Biological Sciences

Journal of Agrometeorology Pub Date : 2023-11-30 DOI:10.54386/jam.v25i4.2315

Deepak Kumar Kumar, P. Rank

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引用次数: 0

摘要

试验采用便携式自动封闭冠层蒸发箱（PACCC）、微量水分测定仪（MLs）和田间水分平衡（FWB）方法测定芫荽作物的蒸散量和作物系数。结果表明，PACCC 内外的微量水分测定仪测得的芫荽作物蒸散量无显著差异，PACCC、微量水分测定仪和 FWB 测得的作物蒸散量在 95% 的置信水平下也无显著差异。这表明，在室内短短的 2 分钟内，小气候的变化对植物的生理过程没有影响。在 PACCC 验证过程中，芫荽作物的平均作物系数在 0.66 至 1.26 之间变化。然而，在 PACCC 的实地测试中，用 FWB 测得的芫荽各阶段作物系数从 0.67 到 1.28 不等。结果表明，PACCC 可用于测量田间作物的蒸散量。

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Estimation of crop evapotranspiration and crop coefficient for coriander using Portable Automatic Closed Canopy Chamber

An experiment was carried out to determine crop evapotranspiration and crop coefficient of Coriander crop by using Portable Automatic Closed Canopy Chamber (PACCC), Micro-Lysimeter (MLs) and field water balance (FWB) methods. The results revealed that there was no significant difference in the coriander crop evapotranspiration measured by the MLs inside and outside the PACCC and no significant difference among the crop evapotranspiration measured by the PACCC, MLs and FWB at 95 percent confidence level was found. It is indicating that, there are no effects of the change in micro-climate for a short period of 2 minutes in the chamber and on the plant physiological processes. During validation of PACCC, the average crop coefficients measured by MLs were varied from 0.66 to 1.26 for coriander crop. However, the stage wise crop coefficients of corianders measured by FWB were varied from 0.67 to 1.28 during field testing of PACCC. The result showed that the PACCC can be used for measurement of crop evapotranspiration in the field condition.

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来源期刊

Journal of Agrometeorology 农林科学-农艺学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Agrometeorology (ISSN 0972-1665) , is a quarterly publication of Association of Agrometeorologists appearing in March, June, September and December. Since its beginning in 1999 till 2016, it was a half yearly publication appearing in June and December. In addition to regular issues, Association also brings out the special issues of the journal covering selected papers presented in seminar symposia organized by the Association.