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五月寒
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五月寒
Encyclopedia
农学
五月寒
释
chilling in May
五月寒
早稻孕穗扬花期间,由于花粉母细胞减数分裂期对环境气象因子十分敏感,日平均气温连续3天以上降到20℃以下,或连续3天最低气温低于15℃,使水稻花器发育不良、花粉败育,空壳率增加,最终影响产量的一种灾害。多出现在小满到芒种农历五月的梅雨季节,又称梅雨寒[注]。
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multiplicative spectrum
multiplicative structure
multiplicative subgroup
multiplicative subset
multiplicative system
multiplicative system of subsets
multiplicative theory
multiplicative topological property
multiplicative type
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multiplicativity
multiplicator
multiplicator equation
multiplicity
multiplicity function
multiplicity of a class
multiplicity of a conjugate point
multiplicity of a covering surface
multiplicity of a critical point
multiplicity of a Gaussian process
multiplicity of a limit cycle
multiplicity of a link
multiplicity of a mapping
multiplicity of a module
multiplicity of an eigenvalue
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