花生学报2023，Vol.52Issue(4)：47-52,59,7.DOI:10.14001/j.issn.1002-4093.2023.04.006
基于称重式蒸渗仪的辽西花生需水量及作物系数研究
Studies on Water Demand and Crop Coefficients of Peanut by Using Weighing Lysimeter in Western Liaoning
摘要
Abstract
Water demand at different growth stages of peanut in western Liaoning is required for relatively accurate evapotranspiration forecast,which is of significance to water management and pea-nut growth.The observation data measured through the weighing lysimeter in Jinzhou Ecology and Agriculture Meteorological Center in 2022 were used to assess the water demand of peanut at different growth stages.Ten-day crop coefficient was introduced to improve the accuracy of evapotranspiration simulation.The results are as follows:a total of 385 mm water is required for peanut growth.Water demand ranks the first at the pegging-podding stage,followed by podding-mature stage(the second),flowering-pegging stage(the third),to seedling stage(the fourth).The crop coefficient of peanut(kc)increases at the initial growth stage,and reaches the maximum at pegging-podding stage,and then decreases.In this paper,ten-day crop coefficient is introduced and,as a result,the accuracy of e-vapotranspiration simulation is 3.6％higher than FAO56 recommended crop coefficient.This study provides a theoretical basis for water efficiency irrigation and accurate evapotranspiration forecast.关键词
花生/蒸渗仪/需水量/蒸散/作物系数Key words
peanut/lysimeter/water demand/evapotranspiration/crop coefficient分类
农业科技引用本文复制引用
张慧,贾森,王蛟洋,张歌,高全,高莉莉,吴航..基于称重式蒸渗仪的辽西花生需水量及作物系数研究[J].花生学报,2023,52(4):47-52,59,7.基金项目
国家自然科学基金项目(41775110) （41775110）
辽宁省应用基础研究计划(2022JH2/101300190) （2022JH2/101300190）
辽宁省气象局年度基金项目(202213) （202213）
辽宁省气象局博士科研专项(D202302) （D202302）
中国气象局沈阳大气环境研究所和辽宁省农业气象灾害重点实验室联合开放基金项目(2023SYIAEKFMS22) （2023SYIAEKFMS22）
