设施番茄果实生长与环境因子的关系  

Relationship between tomato fruit growth and environmental factors under protected facility cultivation

作　　者：程智慧[1] 陈学进[1] 赖琳玲[1] 滕林[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《生态学报》2011年第3期742-748,共7页Acta Ecologica Sinica

基　　金：国家"十一五"科技支撑计划项目(2007BAD79B01)

摘　　要：在设施环境下,研究环境因子与番茄果实生长的关系,以期为设施番茄精准管理提供参考。以1h为步长,记录设施内温度、光照强度及空气湿度,每7d进行1次果径测定,将采集的环境数据细分为7个变量,分析7个变量与果实日增量随时间的变化,采用DPS软件进行逐步回归,建立显著环境因子与果实日增量的回归模型。春茬两个棚环境因子随时间动态变化规律较一致,秋茬日光温室与其有所不同。番茄品种‘粉冠’和‘金棚’果实日增量呈现先升高后降低的趋势,品种‘珍琪’果实日增量变化波动较大。3个设施内影响果实日增量的显著环境因子有所不同,7个环境变量之间相互影响、相互制约。剔除不显著的环境变量后,建立了3个番茄品种果实日增量与显著环境变量的回归模型,确定了7个环境因子对果实生长的影响及果实生长适宜的环境变量范围。To provide information for precision management in tomato production under protected environments,the relationship between environmental factors and fruit growth of facility-cultivated tomatoes were studied and the optimum range of key environmental variables promoting fruit growth was identified.The temperature,light intensity,relative humidity and soil temperature at depth of 10cm in tomato cultivation facilities were recorded at one hour interval.The variation of daily tomato fruit growth were modeled from the data of fruit diameter increase by measuring transverse and longitudinal diameters of fruit every seven days.Data on seven environmental variables and fruit growth were analyzed,and a regression model was established with the DPS software package based on stepwise regression of key environmental variables and tomato fruit growth.It was shown that,the dynamics of environmental factors over time in two plastic sheds for spring tomato crops was similar.In both cases,there was a gradual increase of temperature,decrease of day/night temperature difference,and fluctuation of light intensity and relative humidity.In contrast,in two greenhouses with autumn tomato crops,there was a gradual decrease of air temperature but insignificant day/night temperature difference.Daily fluctuation of light intensity and relative humidity was similar to that in the plastic sheds in the spring.There was a great dependency among the seven environmental variables.For instance,the soil temperature rose with elevated air temperature while the relative humidity dropped with increase of light intensity.Daily fruit growth in the cultivars Fen Guan and Jin Peng increased dramatically first and decreased afterwards,which,however,fluctuated greatly in the cultivar Zhen Qi.The key environmental factors affecting daily fruit growth were significantly different among the three cultivation facilities.A regression model between daily tomato fruit growth and key environmental variables was developed for each of the three cultivars,Fen Guan,Jin

关 键 词：番茄 果实生长 回归模型 设施栽培 精准农业 

分 类 号：S641.2[农业科学—蔬菜学] S626[农业科学—园艺学]