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南麻北种有何利痹?为什么?

问答题
2022-01-02 17:24
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正确答案

麻类是短日植物,南种北引可推迟开花,营养生长期长,使麻杆生长较长,提高纤维产量和质量,但因为北方地区较难满足短日作物麻类成花所需的短日条件,因而南麻北种会延迟开花,种子不能及时成熟。若在留种地采用苗期短日处理方法,可解决留种问题。


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