LED光源对番茄生长的影响研究+文献综述
本论文以玻璃温室自然光下生长的番茄植株作为对照组，室内LED灯下生长的植株作为实验组，分别测定对照组和实验组的光合作用指标、含糖量、叶绿素含量和蛋白质含量等数据，以分析LED灯光对番茄生长的影响。结果表明，实验所用的LED等光强有待提高，LED光照下番茄和黄瓜叶绿素含量明显比对照组高，可溶性糖含量也略高于对照组，说明LED光照可促进叶绿体发育，增加植物体内糖含量。5814
关键词：番茄生长;led光照
Influence of LED Radiation on the Growth of Tomato
Abstract: Tomato can not grow up without illumination, since it performs photosynthesis only under the condition of illunmination. LED (Light Emitting Diode), as light-emitting diode, is a solid state semiconductor devices converting electrical energy into visible light. It differs from the halogen lamps which have merely one color of light is , LED are colorful, illuminating pure color, have narrow spectral range and radiate colorful or white light through red, green and blue color blending. The LED lamp use up extremely low energy compared with common energy-save lamp.
Here the tomato plants grown under LED lamp in culture room were compared with that under natural light in green house. The photosynthetic efficiency, sugar content, chlorophyll content and protein content of the tomato plants were measured to analyze the effect of LED light on tomato growth. The result here indicated that LED light intensity need to be increased, and the chlorophyll content of tomato and cucumber plants cultured under LED were much higher than control, indicating that LED illumination may promote chloroplast development.
Key Words: Tomato growth ; led illumination
目 录
1 绪论1
1.1番茄背景 1
1.1.1番茄形态特征1
1.1.2 番茄生长周期1
1.1.3 番茄生长习性2
1.1.4 番茄的研究价值2
1.2LED灯背景2
1.2.1 LED灯的发光原理2
1.2.2 LED灯的特点3
1.2.3 LED灯的作用3
1.3 LED灯作为植物灯的国内外研究现状4
1.3.1 LED灯作为植物灯的国内研究现状4
1.3.2 LED灯作为植物灯的国外研究现状4
1.4LED对番茄生长的影响研究背景5
2 实验方法5
2.1 试验材料5
2.1.1植物材料 5
2.1.2 试验器材 5
2.2试验方法5
2.2.1番茄植株、黄瓜植株的分组5
2.2.2 光照的设置6
2.2.3 测定指标的设置6
3 实验结果8
3.1 番茄、黄瓜在自然光下和在LED灯下的光合作用比较8
3.2番茄、黄瓜在自然光下和在LED灯下的含糖量比较10
3.3番茄、黄瓜在自然光下和在LED灯下的叶绿素含量比较12
3.4番茄、黄瓜在自然光下和在LED灯下的蛋白质含量比较14
4 讨论与总结16
致谢18
参考文献19
1 绪论
1.1番茄背景
1.1.1 番茄形态特征
番茄为茄科草本植物，包括有限生长型、半有限生长型和无限生长型。条件适宜时可多年生长。植株高0.7～2m。全株被粘质腺毛。茎为半直立性或半蔓性，易倒伏，高0.7～1.0m或1.0～1.3m不等。茎的分枝能力强，茎节上易生不定根，茎易倒伏，触地则生根，所以番茄扦插繁殖较易成活。奇数羽状复叶或羽状深裂，互生；叶长5～40cm；小叶极不规则，大小不等，常5～9枚，卵形或长圆形，长5～7cm，前端渐尖，边缘有不规则锯齿或裂片，局部歪斜，有小柄。花为两性花，黄色，自花授粉，复总状花序。果实为浆果，浆果扁球状或近球状，肉质而多汁，橘黄色或鲜红色，光滑。种子扁平、肾形，灰黄色，千粒重3.0～3.3g，寿命3～4年。花、果期夏、秋季。根系发达，再生能力强，但大多根群分布在30～50cm的土层中。