| 棉花苗期风沙危害指标试验 |
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| 引用本文： | 郭燕云,李新建,李战超,刘纪疆,蔡芸瞳.棉花苗期风沙危害指标试验[J].农业工程,2022,12(7):56-60. |
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| 作者姓名： | 郭燕云 李新建 李战超 刘纪疆 蔡芸瞳 |
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| 作者单位： | 1.新疆兴农网信息中心，新疆维吾尔自治区农业气象台，新疆 乌鲁木齐 830002 |
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| 基金项目： | 公益性行业（气象）科研专项（GYHY201206047）；新疆气象局面上项目（MS202006） |
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| 摘 要： | 风沙危害对棉花苗期生长的影响及其定量指标的构建对于评估风沙灾害对棉花产量的影响具有重要的指导意义。通过不同风速、风向、持续时间的风沙模拟试验，开展风沙灾害对棉花生长的危害程度研究，得到棉花苗期（1真叶到5真叶）风沙危害的指标。结果表明:从1真叶至3真叶，棉苗抗风沙能力随生长进程的推进不断增强，苗期的棉花幼苗对风沙的抵抗能力在5真叶期发生突变；风沙对棉花苗期的影响划分为3个阶段，8～14 m/s为影响增长阶段，14～17 m/s为影响严重阶段，＞17 m/s为损毁阶段。实际生产过程中可根据具体天气预报，结合棉花苗期风沙危害指标，采取适当的风沙天气预防措施。
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| 关 键 词： | 风沙 棉花 苗期 模拟试验 危害指标 |
| 收稿时间： | 2022-01-16 |
| 修稿时间： | 2022-04-24 |
Experiment on Indexes of Sandstorm Hazard in Cotton Seedling Stage |
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| Affiliation: | 1.Information Centre of Xinjiang Xingnong-Net，Xinjiang Agro-meteorological Observatory，Urumqi Xinjiang 830002，China2.Urumqi Meteorological Bureau，Urumqi Xinjiang 830002，China |
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| Abstract: | Impact of sandstorm hazard on cotton seedling growth and construction of quantitative indicators have important guiding significance for evaluating impact of sandstorm hazard on cotton yield． Through sand simulation experiments of different wind speeds, directions and durations, damage degree of sandstorm hazard to cotton growth was studied, and indicators of sandstorm hazard in cotton seedling stage（one true leaf to five true leaves）were obtained． Results showed that, from one true leaf to three true leaves, ability of cotton seedlings to resist sandstorm hazard increased with progress of growth, and resistance of cotton seedlings to sandstorm hazard at seedling stage changed abruptly at five true leaf stage． Effect of sandstorm hazard on cotton seedling stage divided into three stages, 8～14 m/s was affected growth stage, 14～17 m/s was severely affected stage, and more than 17 m/s was damaged stage． In actual production process, appropriate preventive measures for sandstorm weather could be taken according to specific weather forecast and combined with sandstorm hazard indicators at cotton seedling stage． |
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