冬春季不同番茄品种株型特征及其对植株群体光强分布的影响

Tomato Plant Type Character of Different Cultivars in Winter and Spring and Its Effect on Light Distribution Plant Population

以卡特琳娜和佳源大粉番茄为试材,研究了在北方日光温室长季节栽培条件下不同类型番茄品种株型特征及其对植株各叶层光照分布的影响。结果表明番茄植株具有自我调节叶片生长形态以适应环境的能力,这种能力品种间差异显著。卡特琳娜冬季叶片稀疏,中部叶片平展,株型紧凑,春季节间缩短,叶片密度加大,具有良好的光适应性。佳源大粉株型稳定,自我调节能力较差。优越的株型可以增加透光率,使植株的中、下部叶片处于良好的受光状态。

Plant type character of two tomato cultivars, Katerina and Jiayuandafen, which were long-term cultivated in different seasons in solar greenhouse and its effect on light distribution at different leaf layers were studied. The results showed that the tomato plants had the ability of self-adjusting leaf pose to adapt environment, and this kind of ability of two cultivars were significantly different. Katerina has good light adaptability with low density of leaves, patulous midlayer leaves, compact plant type in winter, and short internode, high density of leaves in spring. As compared with Katerina, this kind of adaptability of Jiayuandafen was worse and its plant type was steady. The superior plant type can make midlayer, underlayer leaves in good light apperance.