摘要
番茄生长通过光合作用实现有机物累积,而光合作用和温室温度、光照强度和土壤供水量相关。为此,设计了番茄光合作用模型系统,探究了光合作用与干物质累积之间的关系。引入辐射热积Qz表征番茄生长周期中阳光辐射和温度的累积效应,分析结果表明:当Qz<62时,干物质累积和辐射热积呈线性关系;当Qz>62时,呈M=alnQz-b对数形式关系。探究干物质累积去向,分析结果表明:①地表植株和根系分配干物质累积量、根系分配系数呈指数关系,且随着辐射热积的增加而降低。②叶片、茎和果实等重要部分干物质累积分配方式如下:茎分配系数呈逐步降低趋势;叶片分配系数在苗期显著增长,但到开花期后开始下降;果实分配系数在开花期开始出现,到成熟期时趋于主导地位。
Accumulation of organic compounds was achieved by tomato according to photosynthesis,and photosynthesis had relationship between greenhouse temperature,strength of illumination and water supply for soil.This model for tomato photosynthesis was designed,to explore the relationship between photosynthesis and dry matter accumulation.Thermal radiation accumulation Qz was used to characterize Cumulative effect of sunshine radiation and temperature.The result showed that there was linear relationship between dry matter accumulation and thermal radiation accumulation,while Qz was below 62.The relationship wasM=alnQz-b,while Qz was over 62.To explore distribution for thermal radiation accumulation,the result showed that:①distribution coefficient for root system had exponential relationship between thermal radiation accumulation,and was descended while Qz increased.②Distribution coefficient for stem was descended,Distribution coefficient for leaves increased in seedling stage,and then descended in other stage.Distribution coefficient for fruit was increased in flowering stage,and become main body in mature stage.
作者
刘燕
云兴福
王永
Liu Yan;Yun Xingfu;Wang Yong(Inner Mongolia Agricultural University,Hohhot 010019,China;Inner Mongolia Academy of Agricultural&Animal Husbandry Sciences,Hohhot 010031,China)
出处
《农机化研究》
北大核心
2020年第12期29-33,共5页
Journal of Agricultural Mechanization Research
基金
内蒙古自治区科技计划项目(201702081)。
关键词
温室
番茄
光合热辐射积
干物质累积
分配系数
greenhouse
tomato
thermal radiation accumulation
dry matter accumulation
distribution coefficient
