摘要
通过测定全光照(100%)、30%～40%光照和10%～20%光照下栽植3年的筒花开口箭生长状况、光合特性及光合产物的分配。结果表明:全光照下筒花开口箭在夏季生长受阻,开花结实不良,而30%～40%光照和10%～20%光照下,生长和开花状况相对较好;3种光环境下植株的光合日变化曲线均呈"双峰型",全光照下的"午休"程度较其他两种光照条件下深。3种光照下的光饱和点均较低,光补偿点较高,适宜生长的光照范围较窄;全光照下的根冠比比遮光下高,而比叶面积比遮光下低。
Growth status, photosynthetic characteristics and product distribution of 3-year-old Tupistra delavayi under 100% linght, 30%-40% linght and 10%-20% light condition were studied. The results showed that the plants under 100% linght grew badly and couldn＇t flower and fruit better in summer, while the plants under 10%-20% linght and 30%-40% light could grow and flower well relatively. The diurnal photosynthetic variation curves of the plants under three light conditions presented two peaks, the midday depression of photosynthesis of the plants under 100% linght was lower than that of other two conditions. Tupistra delavayi had lower light compensation point and higher light saturation point, and grew well with narrow light range. The ratio of plants＇ root and shoot under 100% light was higher than that of the shading, while the ratio of leaf area and dry matter weight of the plants was lower than that of the shading.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第5期43-46,共4页
Guangdong Agricultural Sciences
基金
四川农业大学优秀本科论文培育计划基金(2010-72)
关键词
光照条件
筒花开口箭
生长
光合特性
light condition
Tupistra delavayi
growth
photosynthetic characteristics
