冬春季节日光温室内栽培番茄植株群体总辐射分布规律

对冬春日光温室内的光照时间、番茄植株群体冠层上方及不同密度番茄植株群体内部太阳辐射分布进行了较为系统的研究。结果表明,冬季日光温室内番茄植株见光时数较少。番茄植株群体冠层上方太阳总辐射值季节间差异明显。番茄群体内部太阳辐射值同时受季节、密度、株高影响。春季太阳辐射值明显高于冬季;同一季节植株上部太阳辐射值明显高于下部;密度越大内部光照环境越差。日照时数、冠层上方总辐射、植株群体结构(株高和密度等)等是影响番茄植株群体光环境的主要因素。

Distributing Laws of Total Radiation in Cultured Tomato Plant Population inside Solar Greenhouse in Winter and Spring

The sunlight duration,solar radiation distributing above tomato canopy and within the plant population of tomato in different densities in solar greenhouse in winter and spring were studied.The results showed that the sunlight duration in tomato plant in solar greenhouse in winter was few.The total solar radiation above tomato plant canopy differed obviously between seasons. The solar radiation within the plant population of tomato was affected by season,density and plant height simultaneity,with the solar radiation in spring being remarkably higher than that in winter and that above plant being remarkably higher than that below plant in the same season.The bigger the density was,the poorer the sunlight environment within plant population was.The sunlight duration,total solar radiation above tomato canopy and plant population structure of tomato included plant height,density etc.were the key factors affecting sunlight environment of tomato.