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五月寒
释义
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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book purchase and selling
Book Quality Guarantee System
book recommendation
book rental industry in ancient China
book retail
book return rate
book review
book reviewer
book review journal
book review science
book sales cycle
book sales exhibition
book sales ranking
books and disks
books and periodicals design for surface finishing
books buying and selling
books editing
Bookseller
Booksellers Association
books from the collection of the Caotang Academy
Books from the Foundation of the City
books from the tomb of Ji Prefecture
book ship
bookshop
book signing for sale
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更新时间:2025/9/2 4:22:21