Study on Crop Meteorological Index and Change Threshold in Yellow River Sanyizhai Irrigated Area

Feng Feng, Feng Feng, Mengzhen Wang, Yuehua Feng, Xiaoying Jin, Xiaoying Jin, Ting Zhao, Ting Zhao, Nan Jiang, Nan Jiang

2022

Abstract

Based on 756 sets of ten-day meteorological data from 1999 to 2019 in Sanyizhai Irrigation Area, the dynamic threshold of irrigation water demand was studied in order to determine the irrigation water demand in the Yellow River Irrigation Area under the condition of meteorological change. According to the path analysis of crop water requirement of winter wheat, cotton and summer corn, the most significant meteorological factors were selected to construct the meteorological indexes of winter wheat, cotton and summer corn, respectively, and four variation rates of slight, weak, strong and extremely strong were determined. Analysis the growth period of winter wheat all 486 groups of observed meteorological data, strong changes occur most frequently, middle and late time is January, strong change is 2 months early and in late December, in late march to late may meteorological index change is given priority to with slight change and the weak, the weak change based on the analysis of time frequency of the highest (40.79%), strong change frequency of the lowest 13.87%.The maximum frequency of extreme changes in summer corn was in the middle of July, late July and early August, with the highest frequency of extreme changes accounting for 28.57% and the lowest frequency of strong changes accounting for 14.70%.The maximum frequency of strong changes in cotton was in the middle of July, late July and early August, with the highest frequency of small changes accounting for 34.01% and the lowest frequency of strong changes accounting for 15.65%.

Paper Citation

in Harvard Style

Feng F., Wang M., Feng Y., Jin X., Zhao T. and Jiang N. (2022). Study on Crop Meteorological Index and Change Threshold in Yellow River Sanyizhai Irrigated Area. In Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB, ISBN 978-989-758-595-1, pages 41-47. DOI: 10.5220/0011179100003443

in Bibtex Style

@conference{icbeb22,
author={Feng Feng and Mengzhen Wang and Yuehua Feng and Xiaoying Jin and Ting Zhao and Nan Jiang},
title={Study on Crop Meteorological Index and Change Threshold in Yellow River Sanyizhai Irrigated Area},
booktitle={Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,},
year={2022},
pages={41-47},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011179100003443},
isbn={978-989-758-595-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Biomedical Engineering and Bioinformatics - Volume 1: ICBEB,
TI - Study on Crop Meteorological Index and Change Threshold in Yellow River Sanyizhai Irrigated Area
SN - 978-989-758-595-1
AU - Feng F.
AU - Wang M.
AU - Feng Y.
AU - Jin X.
AU - Zhao T.
AU - Jiang N.
PY - 2022
SP - 41
EP - 47
DO - 10.5220/0011179100003443