山东夏玉米土壤干旱阈值研究与影响评价
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董智强,李曼华,李楠,薛晓萍,陈辰,张继波,赵红,侯英雨,潘志华
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The Thresholds of Soil Drought and Its Impacts on Summer Maize in Shandong Province
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DONG ZhiQiang,LI ManHua,LI Nan,XUE XiaoPing,CHEN Chen,ZHANG JiBo,ZHAO Hong,HOU YingYu,PAN ZhiHua
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表7 花粒期轻旱、中旱与重旱不同持续天数的各指标变化程度
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Table 7 The variation degree of each index of light drought, medium drought and severe drought with different duration days at grain stage of summer maize (%)
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干旱程度
Drought degree | 干旱持续时间
Duration days of drought | TAGP | TWSO | TWLV | TWST | MAXLAI | 轻旱
Light drought | 3 d | -0.7 | -1.1 | 0.0 | -0.2 | 0.0 | | 5 d | -0.9 | -1.3 | 0.0 | -0.3 | 0.0 | | 10 d | -0.9 | -1.3 | 0.0 | -0.3 | 0.0 | | 15 d | -0.9 | -1.3 | 0.0 | -0.3 | 0.0 | | 20 d | -0.9 | -1.3 | 0.0 | -0.3 | 0.0 | 中旱
Medium drought | 3 d | -1.6 | -2.3 | 0.0 | -0.5 | 0.0 | | 5 d | -2.1 | -3.0 | 0.0 | -0.6 | 0.0 | | 10 d | -2.4 | -3.5 | 0.0 | -0.7 | 0.0 | | 15 d | -2.8 | -4.0 | 0.0 | -0.7 | 0.0 | | 20 d | -2.9 | -4.1 | 0.0 | -0.7 | 0.0 | 重旱
Severe drought | 3 d | -2.8 | -4.0 | -0.1 | -0.8 | 0.0 | | 5 d | -4.0 | -5.8 | -0.1 | -1.2 | 0.0 | | 10 d | -5.4 | -7.8 | -0.1 | -1.4 | 0.0 | | 15 d | -6.8 | -9.8 | -0.1 | -1.6 | 0.0 | | 20 d | -7.8 | -11.3 | -0.1 | -1.6 | 0.0 |
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