Irrigation benefits for rainfed cassava cultivation regions in Vietnam based on LINTUL-Cassava model

Q3 Agricultural and Biological Sciences Research on Crops Pub Date : 2024-03-12 DOI:10.31830/2348-7542.2024.roc-1047

T. D. Phung

引用次数: 0

Abstract

Globally, climate variability is expected to lead to an increase in temperature resulting in an increase in the water use requirement of various crops. The study was to evaluate the WUR of cassava crops across the rainfed cultivation regions (RCRs) of Phu Yen Province, Vietnam based on the LINTUL-Cassava model simulation under current condition and future climate of the RCP4.5 and RCP8.5 scenarios. The LINTUL-Cassava model was assessed with low errors (d = 0.86, R2 = 0.87, RMSE less than 15.0% and NRSME less than 5.0). Results revealed that the water use requirement of spring and summer crops decreased by approximately 10.8-19.0% and 40.2-51.2% correspond to timescales of 2011-2040, 2041-2070, and 2071-2099 of the RCP4.5 scenario while a significant uptrend up to 13.0% and 32.9% recorded for long term (2071-2099) of the RCP8.5 scenario. The study revealed that rainfed can be utilized effectively if the crop cultivation time (CCT) was fixed to adapt to the changed climate factors.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

基于 LINTUL-Cassava 模型的越南雨水灌溉木薯种植区的灌溉效益

从全球范围来看，气候多变预计将导致气温升高，从而增加各种作物的需水量。本研究的目的是根据 LINTUL-Cassava 模型模拟，评估越南富安省雨水灌溉种植区（RCRs）木薯作物在当前和未来 RCP4.5 和 RCP8.5 气候情景下的用水需求。经评估，LINTUL-Cassava 模型误差较小（d = 0.86，R2 = 0.87，RMSE 小于 15.0%，NRSME 小于 5.0）。结果表明，在 RCP4.5 情景下，春夏季作物需水量在 2011-2040 年、2041-2070 年和 2071-2099 年的时间尺度上分别减少了约 10.8%-19.0%和 40.2%-51.2%，而在 RCP8.5 情景下，长期（2071-2099 年）的需水量则呈显著上升趋势，分别增加了 13.0%和 32.9%。研究表明，如果固定作物栽培时间（CCT）以适应变化的气候因素，雨水灌溉可以得到有效利用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Research on Crops Agricultural and Biological Sciences-Soil Science

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Research on Crops is a peer-reviewed journal publishing original research papers, review articles and short communications in English on all basic and applied aspects of crop sciences, agricultural water management, agro-climatology, agroforestry, agronomy, crop production, crop protection, cropping systems, food science & technology, genetics & plant breeding, horticulture, plant & soil science, plant biotechnology, plant nutrition, post-harvest management of crops, seed science, soil management & tillage, vegetables, weed science, agricultural engineering, agri-business, agricultural economics and extension, etc. The aim of the journal is to provide a forum for the scientific community to publish their latest research findings. The manuscripts submitted for publication should not contain data older than 4 years on the date of submission. The articles submitted for publication in this journal should not be submitted elsewhere simultaneously for publication in another journal. These should not carry any copyright material without prior permission of copyright holder. The articles should present a complete picture of the investigation made and should not be split into parts. There is no prescribed limit regarding the number of pages in case of full-length articles. However, the authors are advised to keep the length of their articles from 4 to 10 full printed pages of the journal. The articles should be divided into the sub-sections: ABSTRACT, INTRODUCTION, MATERIALS AND METHODS, RESULTS AND DISCUSSION, CONCLUSIONS, and REFERENCES. Tables and figures should be appended separately at the end.