A Study of the Effects of Soil Salinity on the Growth and Development of Maize (Zea Mays L.) by using Sentinel-2 Imagery

Online journal of biological sciences

article

Shakhislam Uzakbaevich Laiskhanov¹  Zhassulan Maratuly Smanov¹  Kulyash Duisenbaevna Kaimuldinova¹  Nazira Berdigulovna Myrzaly¹  Nurbol Ergeshovich Ussenov¹  Maksat Nurbaiuly Poshanov¹  Bakdaulet Azimkhanov¹ 

[1] Abai Kazakh National Pedagogical University;U.U. Uspanov Kazakh Research Institute of Soil Science and Agrochemistry

关键词: Soil Salinity;    Maize Growth and Development;    Sentinel-2;    Shauldir Irrigated Massif;    Regression Analysis;    NDVI Dynamics;   

DOI  :  10.3844/ojbsci.2022.323.332

学科分类：生物科学（综合）

来源: Science Publications

【 摘 要 】

Salinizationof soil cover and the constant increase in their area have become one of themost pressing problems year after year for irrigated agriculture regions. Thedegradation processes caused by the salinity of soils negatively affect thegrowth and development of food crops. Therefore, this study focused on theeffects of soil salinity in the midstream of the Syrdarya on the growth anddevelopment of maize where the climate is continental and mostly arid, and thecultivation of crops is possible under irrigation conditions. The study madeharmonious use of remote sensing and field survey methods based on modern andtraditional approaches in terms of time and space. Based on Sentinel-2satellite images, regression analysis was carried out to determine thedependency of vegetation indices on soil electronegativity and maize biomassfrom 73 sampling points in the representative area. As a result, in the studyof the growth and development of maize, it was found that the dependence of theNormalized Difference Vegetation Index (NDVI) on maize biomass within 18vegetation indices was "high" (R2 = 0.76) in spring. The dynamics ofmaize biomass grown on soils of different salinity levels were developed. NDVIdynamics, which covers the entire growth phases of corn, showed that comparedto corn grown in unsalted soils, it slows down the growth of corn in slightly salinesoils-up to 11 days, in moderately saline soils - 35 days, and in heavily (highly) saline soils - 45 days. Characterization of soil salinityand other factors having a positive and negative influence on the growth anddevelopment of maize yield in the studied object is also given.

【 授权许可】

CC BY