卡纳塔克邦北部内陆气候变化下绿图需水量的空间估算

Q3 Agricultural and Biological Sciences
HEMMAREDDY THIMMAREDDY, R. H. PATIL, K. G. SUMESH, GANAJAXI MATH, MAHANTESH B. NAGANGOUDAR
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引用次数: 0

摘要

绿豆是主要种植在卡纳塔克邦北部内陆地区的富含蛋白质的豆类作物之一。本研究旨在利用CROPWAT模型确定绿绿品种DGGV- 2的需水量,帮助由12个区组成的NIK的农民通过适当的灌溉管理来挖掘该作物的潜在产量。60年的年代际分析是在过去(1991-2020)和预测气候(2021-2050)下进行的,按照UAS的推荐做法,在达尔瓦德播种的四个日期(6月7日至6月28日,每周间隔一次)进行。在过去气候条件下(1991-2020),NIK的平均作物蒸散量(ETc)、有效降雨量(ER)和灌溉需要量(IR)分别为246、269.3和37.4 mm。在预估气候条件下,ETc增加26.8 mm, ER增加21.6 mm, IR减少0.3 mm。在预测气候条件下(2021-2050),6月28日播种较晚,是NIK所有12个区的最低需水量和灌溉需水量。利用ArcGIS软件对12个区在过去和未来气候条件下的ETc、ER和IR空间分布进行了解译。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatial estimation of water requirement in greengram under changing climates of North Interior Karnataka
Greengram is one of the major protein rich grain legumes predominately cultivated in North Interior Karnataka (NIK). The study aimed at determining the water requirement of greengram variety DGGV- 2 using CROPWAT model that helps the farmers of NIK consisting of 12 districts in tapping the potential yields of this crop through proper irrigation management. The decadal analysis for 60 years was done under past (1991-2020) and projected climate (2021-2050) as per the recommended practices of UAS, Dharwad across four dates of sowing from 07th June to 28th June at weekly interval. The average crop evapotranspiration (ETc), effective rainfall (ER) and irrigation requirement (IR) under past climates (1991-2020) for NIK were 246, 269.3 and 37.4 mm, respectively. An increase of 26.8 mm in ETc, 21.6 mm in ER and decrease of 0.3 mm in IR were simulated under projected climates. Sowing late i.e., on 28th June under projected climate (2021-2050) simulated the lowest water requirement and irrigation requirement for all the 12 districts of NIK. The spatial distribution of ETc, ER and IR for all the 12 districts of NIK were interpreted under both past and projected climates using ArcGIS software.
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来源期刊
Journal of Agrometeorology
Journal of Agrometeorology 农林科学-农艺学
CiteScore
1.40
自引率
0.00%
发文量
95
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.
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