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油菜越冬冻害
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油菜越冬冻害
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农学
油菜越冬冻害
释
overwintering freezing damage of winter rapeseed
油菜越冬冻害
油菜在越冬期间受持续0℃以下低温造成的灾害。主要发生在冬季(12月至次年2月),受一个或多个低温(一般在-5~0℃)天气过程影响,造成冻伤和生理机能障碍,导致减产或死亡。
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