| Dynamics of grain desiccation in spring maize and its impacts on yield and mechanical grain harvest quality in Northern Xinjiang |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2025.05.09 |
| Key Words: spring maize grain dehydration mechanical harvesting variety screening yield |
| Author Name | Affiliation | | ZHOU Xianlin | Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100, China
College of Ecology and Environment, Xinjiang University, Urumqi, Xinjiang 830046, China | | XUE Jun | Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100, China
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China | | HUANG Zhaofu | nstitute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100, China | | WANG Keru | Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100, China
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China | | LI Shaokun | Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100, China
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China | | ZHU Haiyong | Xiangsihu College of Guangxi Minzu University, Nanning, Guangxi 530008, China |
|
| Hits: 641 |
| Download times: 223 |
| Abstract: |
| Using 34 maize varieties of different maturity periods in Northern Xinjiang as experimental materials, 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 harvest 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 content 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. |
|
|
|