| 河套灌区籽用葫芦终霜冻指标研究 |
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| 引用本文： | 孙向伟.河套灌区籽用葫芦终霜冻指标研究[J].中国农学通报,2018,34(7):111-115. |
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| 作者姓名： | 孙向伟 |
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| 作者单位： | 内蒙古巴彦淖尔市农业气象试验站 |
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| 基金项目： | 内蒙古自治区气象局青年“河套地区籽用葫芦终霜冻指标研究”(nmqnqx201617)。 |
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| 摘 要： | 为了完善当地气象灾害指标,更好地开展籽用葫芦春霜冻气象服务,本研究选用籽用葫芦‘(丰产一号)’幼苗为试验材料,利用MSX-2F人工模拟霜箱系统模拟自然降温过程,通过测定幼苗的叶温记录植株冻伤、冻死情况,结合荧光参数值,综合确定河套灌区籽用葫芦终霜冻指标。结果表明：(1)籽用葫芦幼苗全部冻死的最低温度为≤-4℃；(2)籽用葫芦幼苗结冰点的范围为-0.2~-2.8℃之间,过冷却点的范围为-1.5~-4.5℃之间；(3)苗龄越大的籽用葫芦幼苗,耐受冻害的能力越强；(4)籽用葫芦幼苗轻霜冻地表温度指标为-1℃,重霜冻地表温度指标为-3℃。
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| 关 键 词： | 铅 铅 污染土壤 稳定化 土壤修复 |
| 收稿时间： | 2017/2/27 0:00:00 |
| 修稿时间： | 2018/2/1 0:00:00 |
Last Frost Index of Seed-calabash in Hetao Irrigation District |
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| Abstract: | The paper aims to better develop the meteorological service for last frost on seed-calabash, the authors chose seed-calabash variety‘Fengchan No.1’as material, simulated the natural frost cooling process by using the MSX-2F artificial frost box system, and detected the frostbite and death statistics by measuring leaf temperature with the thermocouple probe. Combining the changes in fluorescence, the authors preliminarily established the meteorological index of last frost of seed-calabash. The results showed that: (1) the minimum temperature for seed-calabash seedlings’freeze to death was ≤-4℃; (2) the freezing point of seed-calabash was in the range of -0.2℃- -2.8℃, the super cooling point concentrated in the range of - 1.5℃- -4.5℃; (3) the seed-calabash with relatively large seedling age had a stronger cold-resistance; (4) the land surface temperature index of light frost and heavy frost on seed-calabash seedlings was -1℃ and -3℃, respectively. |
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