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叶温

叶温的相关文献在1987年到2021年内共计100篇,主要集中在农作物、园艺、植物学 等领域,其中期刊论文87篇、会议论文3篇、专利文献119254篇;相关期刊69种,包括气象科技、生态学报、中国水土保持科学等; 相关会议3种,包括2013第三届中国·寿光国际设施园艺高层学术论坛、全国林业气象学术讨论会、2007年中国气象学会年会等;叶温的相关文献由322位作者贡献,包括宋朝鹏、王谦、张劲松等。

叶温—发文量

期刊论文>

论文:87 占比:0.07%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:119254 占比:99.92%

总计:119344篇

叶温—发文趋势图

叶温

-研究学者

  • 宋朝鹏
  • 王谦
  • 张劲松
  • 路晓崇
  • 侯娜
  • 刘亚
  • 杨喜田
  • 杨晓亮
  • 梁陟光
  • 樊巍
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 赵建贵; 高安琪; 韦玉翡; 白云飞; 李晋蒲; 曹瑞红; 李志伟
    • 摘要: 通过自研发的叶温与环境因子采集系统对叶温、室内光照强度、温湿度、CO2浓度、地温、土壤湿度长期实时监测,研究了温室中环境因子变化对番茄叶温的影响.结果 表明,棉被揭开后,叶温与室内光照强度变化有相似的趋势,但二者变化存在一定差异;全天时间段叶温变化与室温变化一致;叶温变化与CO2浓度变化呈相反趋势;叶温与地温变化趋势相近,但地温变化滞后于叶温2~3h;土壤湿度全天时间段变化微弱,室内湿度变化较大.室温直接影响着叶温的变化,室内光照强度、CO2浓度、土壤温度通过影响室温间接影响着叶温的变化.室温是影响番茄叶温的主要环境因子,通过指导室温变化提高作物新陈代谢,进而提高作物产量与品质.
    • 王光焰; 魏聪; 陈长清; 刘云飞
    • 摘要: 准确了解蒸散发对获取植物生理生态参数非常重要,但目前的蒸散发测量方法依赖于侵入式、固定式的仪器设备,尚缺乏较为方便的移动测量方法.本研究提出一种依赖于移动端设备,获取红外成像技术图片测量得到植物叶温值,随后根据“三温模型”原理测定得到植物蒸腾速率的方法.通过室内盆栽试验数据,研究结果基本验证了技术流程的可行性,且结果之间互为验证,说明该方法具有较好的应用前景.若开后期展大规模的应用和比较,可能获得较好的推广价值.本研究也可作为其他研究的理论参考和技术依据.
    • 于合龙; 李赞; 陈静; 刘鹤
    • 摘要: 为准确测量及监控植物的叶片温度(简称叶温),提出一种基于柔性基质的温度传感器贴片(简称柔性温度计)来测量植物叶温的方法.首先,采用石墨烯纳米片为感温元件,对其工作原理进行阐述,使用蓝牙传输模式,开发无线测温系统.其次,为保证系统测温的准确性,提出一种标定算法对柔性温度计进行标定,通过双面胶将植物叶片与柔性温度计相连接,最终达到厚为2 mm,质量为4.9 g的轻薄装置.最后测试了柔性温度计在君子兰中应用的可靠性;通过求平均值法,柔性温度贴片的精确度能达到0.05°C.试验证明,柔性温度计具有准确、可靠、可持续监控等优点,使得对植物的测温工作更加简单、便捷.
    • 魏硕; 徐宸; 王松峰; 汪代斌; 李常军; 江厚龙; 王洪峰; 朱晓伟; 宋朝鹏
    • 摘要: [目的]研究预凋萎处理烟叶烘烤过程中水分迁移干燥及形态收缩特性,为烘烤工艺优化提供依据.[方法]以烤烟品种K326中部叶为试验材料,烤前对烟叶进行凋萎处理,研究烘烤过程中预凋萎烟叶温度、水分迁移态势、含水率和形态收缩的变化,并利用干燥收缩模型分析烟叶在烘烤过程中的失水收缩行为.[结果]与未进行预凋萎的烟叶相比,变黄期预凋萎烟叶叶温提高0.5~1°C,干筋期叶温、脉温提高0.5~2°C;烘烤过程中预凋萎烟叶主脉水分核磁信号强度明显较弱,主脉水分向叶片迁移效率较高,变黄期主脉的失水比率增大,主脉湿基含水率下降较快;预凋萎烟叶变黄期主脉直径收缩率增幅较大,烘烤过程中烟叶叶片和主脉体积比与水分比呈非线性变化,利用Quadratic收缩模型可以很好地预测烟叶叶片和主脉的失水收缩变化.[结论]与未进行预凋萎的烟叶相比,烘烤过程中预凋萎烟叶主脉水分迁移干燥及形态收缩加快.%[Objective] This study investigated the characteristics of moisture migration,drying and morphological shrinkage of pre-wilted tobacco leaves during curing to provide basis for the optimization of curing process.[Method] The middle leaves of K326 were treated by wilting before curing,and the changes of tobacco leaf temperature,moisture migration trend,moisture content and shape contraction during curing were studied by compared with the control tobacco leaves.The shrinkage behavior of tobacco leaves during curing was also analyzed by common drying shrinkage models.[Result] Compared with control tobacco leaves,the temperature of pre-wilted tobacco leaves increased by 0.5-1 °C during yellowing stage,and temperature of tobacco lamina and midrib increased by 0.5-2 °C during stem drying stage.The midrib moisture nuclear magnetic signal degree of pre-wilted tobacco leaves was significantly weakened,the transfer efficiency of moisture from tobacco midrib to lamina was high,the dehydration distribution ratio of midrib increased during yellowing stage,and the wet basis moisture content decreased fast.The midrib diameter shrinkage ratio of pre-wilted tobacco leaves increased greatly,and the ratio change between volume and moisture of tobacco lamina and midrib was nonlinear,which can be well predicted by the Quadratic model.[Conclusion] Compared with control tobacco leaves,the moisture migration and shape contraction of prewilted tobacco leaves were accelerated during flue-curing.
    • 刘金苹; 刘琳奇; 王谦; 陈景玲; 张劲松
    • 摘要: In order to know the microclimate of the habitat shrubs in the arid and semi-arid area,choosing clear and gentle breeze day,we measured the leaf temperature of Quercus vaviabilis seeding under vervain family and in bare land.At the same time we made a contrast with the high temperature stress index to analyze the nursing effect of Vitex negundo var. heterophylla. The results showed that the leaf temperature of Quercus variabilis seeding was clear different between under vervain family and in bare land,especially the northern part point under canopy was lower than the bare land's. We found the leaf temperature changed little during the observation period,the leaf temperature of Quercus variabilis seeding shaded by vitex shrub was lower than the external natural condition,and vitex shrub had a significant effect on Quercus variabilis seeding nursery shading.There was an evident difference in the leaf temperature between the northern and the southern of shrub. The leaf temperature of southern part point under canopy was higher than the northern at noon.During the summer solstice,this difference was more obvious, and the leaf temperature was much more than the HTSI,but the duration was short at this time.Whether under vitex shrub or in bare land,the trend of leaf temperature change between Quercus variabilis seeding and the air temperature were same,but air temperature was between leaf temperatures of Quercus variabilis in the northern and the southern of canopy.The paper pointed out that Quercus variabilis leaf temperature in natural conditions was about 1°Cin spring and increased about to 2°Cor 3°Chigher than HTSI,and the time lasted 1 h to 4 h everyday.The leaf temperature of southern part point under canopy was greater than HTSI in some cases and the average difference was 4.6°Clasting for 1 h to 2 h.%为了解干旱半干旱地区生境中现有灌木植物群丛形成的微气候,有效利用荆条灌丛对冠下栓皮栎幼苗的荫庇作用,选择晴朗无风或微风试验条件,用红外热成像仪测定荆条灌丛下和无荆条荫庇对照下的栓皮栎幼苗叶温,并与栓皮栎幼苗叶片高温胁迫指标对比,分析遮阴减少高温胁迫的程度和时间.结果表明:荆条灌丛下与对照下栓皮栎幼苗叶温有明显差异,特别是荆条北1/2栓皮栎幼苗叶温明显低于对照下叶温,且叶温在观测期内变化幅度小;荆条南北栓皮栎叶温也有明显差值,荆条南部12:00时因阳光与枝倾角相近,光线透射,叶温差值最大,夏至日附近表现最明显,超过高温胁迫指标较多,但持续时间短;在荆条庇荫下,或在自然状态下,栓皮栎幼苗叶温与气温的变化趋势相同,但气温整体位于荆条灌丛南北侧叶温之间;自然条件下,栓皮栎叶温超过高温胁迫指标的程度逐渐增加,从春季的1°C左右,增加至夏季的2~3°C,时间从1h变化到4h.荆条灌丛下南1/2栓皮栎幼苗叶片中午前后有明显的光斑而出现高于高温胁迫指标的情况,平均高出4.6°C,持续时间1~2h;荆条荫庇的区域栓皮栎幼苗叶温均低于高温胁迫指标.
    • 马黎华; 胡笑涛; 王平; 王振昌
    • 摘要: 【目的】探寻玉米叶温对不同深度土壤含水率、气象因素的响应关系。【方法】采用不同供水条件下的滴灌玉米土箱试验,基于叶温、气象和土层含水率数据设计3种输入项结合线性回归模型和神经网络模型,研究了玉米叶温与环境因素的数据驱动模型及模型的不确定性。【结果】(1)在叶温变化模拟中,与线性模型相比神经网络模型具有优势,在40%和60%滴灌湿润比处理下的全因素模型的决定系数由0.8提升到了0.9;80%湿润比处理下全因素模型的决定系数由0.5提升到0.7;(2)单因素不确定性分析中,与叶温变化最密切的气象因素是空气温度,其次是空气湿度和净辐射;在土层含水率的不确定性分析中,30~40 cm土层含水率与叶温变化的响应关系最密切。【结论】结合MC(Monte Carlo method)设计的模型不确定性分析,以d-factor指标量化单影响因素与叶温的响应关系,不同深度土层含水率与叶温的响应关系存在差异,30~40 cm土层是水分响应关键土层。
    • 王佩舒; 刘金苹; 陈景玲; 王谦; 张劲松; 贾长荣; 孙圣
    • 摘要: Thermal imager can measure surface temperature of matters accurately,it provides a new method for agricultural and forestry research.Temperatures of Vitex negundo var.heterophylla community and Quercus variablis seedling leaves were measured by thermal imager to provide examples of the application of thermal imaging technique in agriculture and forestry.The results showed 1) before applying thermal imager to measuring temperature of plants,the radiation emission rate of plant organs had to be determined.2) The result of the temperature measurement of Q.variablis by using thermal couple was quite similar to that by thermal imager,indicating that the later was suitable for measuring leaf temperature of plants.3) Thermal imager could be used to measure canopy temperature of plant community and leaf surface temperature of the canopy,but the air temperature of the canopy had to be measured by using thermal couple or thermistor temperature instruments.4) Thermal imager could be used to analyze the isotherm of V.negundo var.heterophylla community canopy,and to show its temperature distribution feature.The results would provide not only a method of studying nurse effects of V.negundo var.heterophylla canopy to Q.variablis seedlings,but also a method of measuring other agricultural and forestry plants.%热成像仪能够准确测定物体表面的温度,给农林植物科学研究带来了新的手段.针对热成像仪的特点,为了更好地应用于测定农林植物体温度,将热成像仪应用于荆条灌丛体温和栓皮栎幼苗叶温的测定.结果表明:1)农林植物体温的测量可以使用热成像仪,测定前要确定待测物体的辐射出射率.2)对于栓皮栎幼苗叶温,热成像仪与热电偶测定结果非常一致,说明热成像仪适于叶温测量.3)热成像仪可以测定植物群体冠层内和冠层表面叶片的温度,但不能测定空气温度.气温测量仍需要使用热电偶或热敏电阻等传感器.4)热成像仪可以分析荆条冠层的温度分布等值线,展示群体温度分布特征.既为荆条灌丛对栓皮栎幼苗的保育作用研究提供方法,也为热成像仪在其他农林植物体温测定研究中的应用提供参考.
    • 田月月; 张丽霞; 张正群; 李智; 侯剑; 乔明明
    • 摘要: 'Huangjinya', one of light sensitive tea germplasm resources, was bred from natural yellow mutant single plant in Deshi tea plantation, Yuyao City, Zhejiang Province, in 1998.It is prone to cause physical disorder and leaf sunburn when the light intensity is more than 60 klx.The occurrence and symptoms of leaf sunburn of 3-year-old tea cultivar 'Huangjinya' (HJY) were investigated in Taian area from April to July in 2016.At the same time, the leaf temperature and three main meteorological factors including light intensity, air temperature and humidity were also measured.The difference between leaf temperature and air temperature (ΔTL-A) was calculated, and the effects of main meteorological factors on leaf temperature and ΔTL-A were explored to analyze the occurrence conditions of leaf sunburn.The results were as follows.(1) The symptoms of leaf sunburn could be generally divided into three main types: white, red and necrotic, and the degree of burn injury aggravated in turn.(2) Tea cultivar 'HJY' began to show symptoms of leaf sunburn in mid May, and this phenomenon was particularly obvious from late May to June in Taian area.(3) Blaze light intensity and high leaf temperature were the two necessary conditions for causing leaf sunburn of 'HJY'.The phenomenon of leaf sunburn appeared when the daily maximum light intensity exceeded 100 klx and the daily maximum leaf temperature exceeded 38~40°C.The threshold temperature of leaf sunburn was 38°C when the leaf temperature varied greatly throughout the day.However, it could be increased to 40°C if the leaf temperature change was small and the leaves were exercised in high temperature.(4) The leaf temperature and ΔTL-A were significantly affected by light intensity, air temperature and air humidity, but their relevance was various in different periods.According to the above results, some technology measures such as shading, intercropping and sprinkler which could dim light, cool temperature and increase air humidity were put forward, and they could prevent 'HJY' from leaf sunburn effectively in the sensitive period.%'黄金芽'是1998年由浙江余姚市德氏茶场发现的自然黄化变异单株培育而成的光照敏感型茶树种质资源,光照强度超过60 klx时易出现生理障碍,造成叶片日灼.2016年4-7月份调查了泰安茶区三年生'黄金芽'叶片日灼发生情况及其症状,测定了叶温以及同期光强、气温和湿度三个主要气象因子,计算了叶温与气温的差值ΔT叶-气,探究了主要气象因子对叶温以及ΔT叶-气的影响,分析了叶片发生日灼的条件.结果表明:(1)'黄金芽'叶片日灼症状主要分为白化型、红变型和坏死型三种,其日灼伤害程度依次加重;(2) 泰安茶区栽种的'黄金芽'5月中旬开始出现日灼现象,5月下旬至6月发生较为严重;(3)高光强和叶片高温是引起'黄金芽'叶片日灼的两个必要条件.在日最大光强达100 klx以上,日最高叶温38~40°C以上时可出现日灼现象.当叶温日变幅大,发生日灼的叶温阈值较低(38°C);叶温日变幅小且经过高温锻炼后,发生日灼的叶温阈值可提高至40°C;(4) 叶温以及ΔT叶-气受光强、气温和空气湿度的显著影响,但不同时期相关程度不同.根据上述结果,提出了通过在'黄金芽'日灼易发时期采取覆盖遮阳网、间作以及喷灌等减光、降温和增湿技术措施,可以有效预防'黄金芽'叶片日灼的发生.
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