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要预防油菜冬季干旱,需要针对油菜生长不同苗情,采取察颜观色的一套相应管理措施,促进油菜平衡发展,使油菜获得好收成。
To prevent rape winter drought, rape need to grow different seedlings, to adopt a set of appropriate measures to observe Yan color, to promote the balanced development of rapeseed, rape get a good harvest.