LIU Qi,CHEN Yan-li,FAN Fei,et al.Effects of Shading Treatments on Growth of Eggplant Seedlings in Summer and Autumn in Tropics[J].Northern Horticulture,2014,38(03):23-27.
热带地区夏秋季不同遮光处理对茄子幼苗生长的影响
- Title:
- Effects of Shading Treatments on Growth of Eggplant Seedlings in Summer and Autumn in Tropics
- 文章编号:
- 1001-0009(2014)03-0023-05
- Keywords:
- eggplant seedlings; shading; morphological indexes; physiological indexes; photosynthesis parameters
- 分类号:
- S 641.1
- 文献标志码:
- A
- 摘要:
- 以“杭茄一号”茄子为试材，设置热带地区夏秋季棚内不同遮光率(30%、50%、70%、90%)的遮阳网覆盖，以防雨棚内不遮阳为对照，研究了不同遮荫处理对茄子幼苗形态指标、生理指标和光合参数的影响。结果表明：随着棚内遮阳网遮光率的增大，茄子的形态指标、壮苗指数、叶绿素、可溶性蛋白质和可溶性糖含量均呈下降趋势，对照显著高于遮光率为50%、70%、90%的遮阳网处理；遮光率为50%、70%、90%遮阳网处理的质膜透性和丙二醛（MDA）含量显著高于对照和遮光率为30%遮阳网处理；遮光过多抑制茄子的光合作用，对照幼苗在晴天中午12：00～14：00之间光合速率下降明显。因此，在热带地区夏秋季防雨棚内育茄子苗可以只在中午高温时段用30%遮光率的遮阳网进行短期遮光，其它时间无需遮阳。
- Abstract:
- Taking ‘Hangqie No.1’ as material，the eggplant seedlings in the sun-shading screen with different shading rates (30%，50%，70%，90%) were set，compared with no shading in the rain shelter，the effect of different shading treatments on morphological indexes，physiological indexes and photosynthesis parameters of eggplant seedlings in the summer and autumn in the tropics were studied.The results showed that，the morphological indexes，seedling indexes，chlorophyll contents，soluble protein and soluble sugar content of the eggplant seedlings were declined with the shading rate increased，the control was significantly higher than other treatments，membrane permeability and MDA content of 30% shading treatment and CK were lower than that of other treatments，and the photosynthetic parameters showed that shading too much light would decrease the Pn of the eggplant seedlings，however，the Pn of the eggplant seedlings of CK decreased in 12:00～14:00.In conclusion，the eggplants seedlings in the rain shelter only need by 30% shading net at noon.
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备注/Memo
第一作者简介：刘其（1990-），男，海南临高人，本科，研究方向为蔬菜设施栽培。