国内棉花干物质及养分的积累与分配研究进展

Study Progress on Dry Matter and Nutrient Accumulation Distribution of China Cotton

棉花干物质积累苗期缓慢,蕾期加快,开花到结铃盛期达到高峰,此后逐渐平稳,且积累的干物质在生长前期主要分配于根、茎和叶等营养器官,后期分配于蕾铃等生殖器官。棉花对养分的吸收与分配,与其干物质积累分配的趋势基本一致,前期逐渐增加,开花结铃期达到高峰,吐絮以后缓慢下降。但是,不同地区、不同栽培条件下,棉花干物质积累分配与养分吸收分配特点也表现出一定的差异。

Cotton plant biomass accumulated slowly in the seedling period,faster in squaring and reached the peak in flowering and boll setting period,and then slowed down in maturity.Biomass of cotton plant was distributed mainly to vegetative organs such as root,stem and leaf in the early growing period,and to the reproductive organs such as bud,boll in the late growing period.Cotton plant absorbed and distributed nutritious elements almost the same way as biomass accumulation and distribution.Cotton plant absorbed the nutrients slowly in the early growing period and reached the peak at flowering and boll setting period and then falling down at maturity.However,the increasing and partitioning pattern of cotton biomass and nutrients would be altered by locations or management.