| 刘静,王连喜,马力文,李凤霞,张小煜,苏占胜,周慧琴,李剑萍.枸杞的生理因子与外环境气象因子的日变化规律研究[J].干旱地区农业研究,2003,(1):77~82 |
| 枸杞的生理因子与外环境气象因子的日变化规律研究 |
| n experimental study on daily variations of environment factors and physiological parameters of Lycium barbarum L． |
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| DOI：10.7606/j.issn.1000-7601.2003.01.18 |
| 中文关键词: 植物生理因子 微气象因子 日变化规律 枸杞 |
| 英文关键词:physiological factor micrometeorological phenomeno daily variation Lycium barbarum L. |
| 基金项目:国家自然科学基金"宁夏枸杞高产优质的气候形成机理及区划研究"专题(39960036) |
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| 中文摘要: |
| 采用CIRAS-1型光合作用综合测定仪同时测定了3a生枸杞和灌溉春小麦孕穗期蒸腾速率、净光合速率、气孔阻力等植物生理因子的逐时变化,并同时测定了总辐射、照度、光合有效辐射、叶温、气温、湿度和田间微风。通过枸杞诸因子的日变化和同期春小麦的比较,研究了枸杞叶片光合作用、蒸腾作用、气孔导度及其外界光、温、水、气和风的变化.结果表明,枸杞净光合速率大于春小麦,比春小麦更喜光,存在光合午休现象;叶片蒸腾速率全天略高于春小麦,光合午休时段蒸腾速率没有继续加大,维持在相对较高但较平衡的水平上;枸杞气孔导度较低;辐射、气温是影响光合午休的主要因子。相对湿度下层大于上层,风速分布规律则相反。枸杞田间没有明显的CO2吸收低谷。 |
| 英文摘要: |
| The hour-to-hour change of transpiration rate, net photosynthesis rate, stoma resistance of Lycium barbarum L. and sprin g wheat were measured with CIRAS-1 photosynthesis measure system, meanwhile, il lumination,effective radiation of photosynthesis, leaf and air temperature, humidity and breeze in the field were also tested. The study was conducted to d iscover the differences of leaf net photosy nthesis rate, transpiration rate, conductivity of stoma, solar radiation, leaf a nd air temperature,humidity, concentration of CO2 and wind speed between Ly cium barbarum L. and spring wheat. The results showed that the leaf NPR of Lycium barbarum L. was higher than that of spring wheat, but was dropped at no on. Its leaf transpiration rate was a bit higher than spring wheat in whole day, and kept in a relatively high and steady level at noon. Its stoma conductivity was lower than spring wheat. Rediation and air temperature were the main factors that affected the drop of NPR at noon. The relative humidity in the lower canop y was higher than the upper canopy; however, the law of wind speed was on the co ntrary. There was no remarkable valley of CO2 absorption in the field of Ly cium barbarum L. |
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