| 拔节期水分冗余胁迫对淮北平原夏玉米产量形成机制的影响 |
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| 引用本文： | 王成雨,慕丽,李森郁,鲁溢超,陈飞,吕秋实,乔明辉,晏小凤,李欢,朱英华.拔节期水分冗余胁迫对淮北平原夏玉米产量形成机制的影响[J].农业工程学报,2022,38(2):87-94. |
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| 作者姓名： | 王成雨 慕丽 李森郁 鲁溢超 陈飞 吕秋实 乔明辉 晏小凤 李欢 朱英华 |
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| 作者单位： | 1. 安徽农业大学农学院，合肥 230036；;2. 安徽农业大学皖北试验站，宿州 234108 |
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| 基金项目： | 安徽省重点研究和开发计划（201904a06020055） |
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| 摘 要： | 为探明拔节期涝渍灾害对淮北平原夏玉米产量形成机制的影响,以登海605为试验材料,以正常水分处理为对照(CK),在夏玉米拔节期设置淹水和渍水2个水分胁迫处理,于2018年和2020年在安徽农业大学皖北试验站进行了大田试验,分析了水分冗余胁迫对夏玉米生育进程、光合性能、干物质积累、抗倒特性、雌雄间隔期、叶粒比和产量的影响....
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| 关 键 词： | 玉米 淹水 渍水 生育进程 光合性能 抗倒特性 雌雄间隔 叶粒比 产量 |
| 收稿时间： | 2021/8/31 0:00:00 |
| 修稿时间： | 2022/1/11 0:00:00 |
Effects of water redundancy stress at the jointing stage on the yield formation mechanism of summer maize in Huaibei Plain of China |
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| Wang Chengyu,Mu Li,Li Sengyu,Lu Yichao,Chen Fei,Lyu Qiushi,Qiao Minghui,Yan Xiaofeng,Li Huan,Zhu Yinghua.Effects of water redundancy stress at the jointing stage on the yield formation mechanism of summer maize in Huaibei Plain of China[J].Transactions of the Chinese Society of Agricultural Engineering,2022,38(2):87-94. |
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| Authors: | Wang Chengyu Mu Li Li Sengyu Lu Yichao Chen Fei Lyu Qiushi Qiao Minghui Yan Xiaofeng Li Huan Zhu Yinghua |
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| Institution: | 1. School of Agronomy, Anhui Agricultural University, Hefei 230036, China;;2. Wanbei experimental station of Anhui Agricultural University, Suzhou 234108, China |
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| Abstract: | Abstract: This study aims to explore the effect of flooding and waterlogging at the jointing stage of summer maize on the formation mechanism of yield in the Huaibei plain. Taking Denghai 605 as the test material, two treatments of water stress (including flooding and waterlogging) were carried out in a field experiment in the Wanbei experimental station of Anhui Agricultural University in 2018 and 2020. The normal water supply was also used as the control (CK). The parameters were analyzed, such as growth process, photosynthesis traits, dry matter accumulation, lodging resistance traits, male-female interval, ratio of leaf to grain, and yield of summer maize. The results showed as follows. 1) The duration from the jointing to silk and anthesis-silking interval were significantly (P<0.05) increased, compared with the CK, and the flooding treatment was significantly (P<0.05) greater than the waterlogging treatment. 2) The leaf area per plant, the chlorophyll content, and net photosynthesis rate (Pn) from the big trumpet to dough stage significantly (P<0.05) decreased in the flooding treatment, compared with the CK. The leaf area per plant from big trumpet to dough stage significantly (P<0.05) decreased in the waterlogging treatment, compared with the CK. The chlorophyll content and net photosynthesis rate only at big trumpet stage significantly (P<0.05) decreased in the waterlogging treatment, compared with the CK. 3) The dry matter accumulation of leaf, stem, ear, and whole plant from the big trumpet to maturity were significantly (P<0.05) reduced in the flooding and waterlogging treatment, compared with the CK. The dry weight of the whole plant is the most critical physiological index affecting the yield, and the rates of decrease were 53.99% and 23.65% for the dry matter accumulation of whole plant in the flooding and waterlogging treatment, respectively.4) The stem diameter and puncture strength were significantly (P<0.05) reduced in the flooding treatment compared with the CK. Meanwhile, the lodging rate significantly (P<0.05) increased in the flooding treatment, where the rate of increase was 78.53% compared with the CK. 5) The empty rods rate significantly (P<0.05) increased in the flooding and waterlogging treatment compared with the CK. The number of grains per ear is the most critical yield component factor affecting yield, and the grains number per ear and yield of summer maize significantly (P<0.05) decreased in the flooding and waterlogging treatment, compared with the CK, where the rates of decrease for the grain number per ear were 44.48% and 30.61%, respectively, whereas, those for the yield were 57.26% and 34.68%, respectively. The 1000-grain weight and the leaf area and number of grains per leaf were significantly (P<0.05) reduced in the flooding treatment, while, that significantly (P<0.05) increased in the waterlogging treatment, compared with the CK. The findings can provide a theoretical and technical support to the decision-making on the summer maize production in areas prone to the waterlogging disaster. |
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| Keywords: | maize flooding waterlogging growth process photosynthetic traits lodging resistance traits male-female interval leaf to grain ratio yield |
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