干旱地区农业研究2025，Vol.43Issue(5)：87-96,158,11.DOI:10.7606/j.issn.1000-7601.2025.05.09
北疆春玉米籽粒脱水动态及其对产量与机械粒收质量的影响
Dynamics of grain desiccation in spring maize and its impacts on yield and mechanical grain harvest quality in Northern Xinjiang
摘要
Abstract
Using 34 maize varieties of different maturity periods in Northern Xinjiang as experimental materi-als,this study systematically measured grain desiccation dynamics,yield,and mechanical harvest quality indicators to analyze the relationships among grain moisture content,accumulated temperature,yield,and harvest quality.The results showed significant varietal differences in grain moisture content at physiological maturity,averaging 27.33％,ranging from 24.48％to 30.25％,with'Zhengdan 958'having the highest moisture content(30.25％)and'KX2030'the lowest(24.48％).The developed grain moisture-accumulated temperature regression model(y=90/(1+x/992.201)1.895,R2=0.961)accurately predicted moisture dynamics.The average yield across varieties was 12 300.59 kg·hm-2,with'Xianyu 1330'exhibiting superior desiccation characteristics(total desiccation rate was 0.040％·℃-1·d-1)and the highest yield(16 681.77 kg·hm-2).Grain moisture content significantly affected har-vest quality.Minimum broken rate(4.32％)occurred at moisture content of 18.31％,with the 13.86％～22.76％range meeting national standards(broken rate ≤5％).Impurity and yield loss rates met standards when grain moisture con-tent was below 38.37％and 37.25％,respectively.Four high-performing varieties('Xianyu 1330','Xiandan 13',"Jiushenghe 2468"and'Fuer 116')with low grain moisture content(＜27.5％),high desiccation rate(＞0.038％·℃-1·d-1),and high yield(＞13 500 kg·hm-2)were identified using bi-directional averaging.关键词
春玉米/籽粒脱水/机械粒收/品种筛选/产量Key words
spring maize/grain dehydration/mechanical harvesting/variety screening/yield分类
农业科学引用本文复制引用
周先林,薛军,黄兆福,王克如,李少昆,朱海勇..北疆春玉米籽粒脱水动态及其对产量与机械粒收质量的影响[J].干旱地区农业研究,2025,43(5):87-96,158,11.基金项目
新疆维吾尔自治区重点研发计划项目(2023B02040) （2023B02040）
中国农业科学院农业科技创新工程项目(2025) （2025）
