| 基于气象要素的冬小麦分期播种对比分析 |
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| 引用本文： | 陈璐瑶,范伶俐,杨熙昊.基于气象要素的冬小麦分期播种对比分析[J].现代农业科技,2023(12). |
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| 作者姓名： | 陈璐瑶 范伶俐 杨熙昊 |
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| 作者单位： | 广东海洋大学海洋与气象学院,广东海洋大学海洋与气象学院,广东海洋大学海洋与气象学院 |
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| 基金项目： | 广东省省级人才财政专项(060313452101)；广东海洋大学本科生创新创业团队项目(CCTD201805) |
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| 摘 要： | 本文利用山东省泰安农业气象试验站2019-2020与2020-2021年冬小麦分期播种试验实测数据以及同期气象观测资料，分析不同播期气象条件对冬小麦生长及产量的影响。结果表明：（1）对于泰科麦31品种小麦，日照时数在冬小麦出苗-开花阶段起重要作用，发育期天数与日照时数呈显著正相关，即在冬小麦出苗后日照越充足，苗情越好；抽穗期后日照条件差，对冬小麦灌浆速率起限制作用。（2）越冬过程的开始主要受日最高气温及其持续时间的影响，越冬期持续时间的长短则受日最低气温及其持续时间的影响。（3）适量的降水对冬小麦灌浆速率起促进作用。（4）各播期处理的冬小麦灌浆过程均符合 Logistic 生长规律，灌浆速率与各气象要素之间关系在不同播期的表现不同。（5）冬小麦千粒重受前期生长状况与越冬期积温、负积温影响，冬小麦越冬期低温持续时间短有利于冬小麦产量的提高；千粒重与日照时数呈显著正相关。
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| 关 键 词： | 气候变化 碳中和 分期播种 logistic模型 发育期 叶面积指数 |
| 收稿时间： | 2022/9/26 0:00:00 |
| 修稿时间： | 2022/9/26 0:00:00 |
Comparative Analysis of Winter Wheat Sowing by Stages under Climate Change |
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| Institution: | School of Ocean and Meteorology,Guangdong Ocean University,Zhanjiang//Key Laboratory of Climate,Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province,Guangdong Ocean University//CMA-GDOU joint laboratory for Marine meteorology, |
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| Abstract: | Based on the measured meteorological and wheat growth data of winter wheat during 2019-2020 and 2020-2021 at Tai''an agrometeorological experimental station, and meteorological observation data of the same period, the effects of meteorological conditions at different sowing dates on the growth and yield of winter wheat were analyzed. The results showed that show that (1) Sunshine hours played an important role in the emergence flowering stage of winter wheat. The days of each growth period were significantly positively correlated with sunshine hours, that is, the more sufficient sunshine after the emergence of winter wheat, the better the seedling condition; Poor sunshine conditions after heading stage restricted the grain filling rate of winter wheat.(2)The beginning of wintering was mainly affected by the daily maximum temperature and its duration, while the duration of wintering was affected by the daily minimum temperature and its duration. (3) Proper precipitation promoted the filling rate of winter wheat. (4) The grain filling process of winter wheat treated at each sowing date was in line with the logistic growth law, and the relationship between grain filling rate and meteorological elements was different at each sowing date. (5) The thousand-grain weight of winter wheat was affected by the early growth status, accumulated temperature and negative accumulated temperature in the overwintering period. The short duration of low temperature in the overwintering was conducive to the increase of winter wheat yield. There was a significant positive correlation between thousand-grain weight and sunshine hours. |
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| Keywords: | climate change carbon neutralization sowing by stages logistic model developmental stage leaf area index |
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