水培绿叶菜生长模型参数的季节变异规律研究  

Coefficient of hydroponic leafy vegetables growth model change with season

作　　者：严振宁 李兴杰 尹艺璐 张样平 李东波 苏连泰[1] 奥岩松[1] YAN Zhenning;LI Xingjie;YIN Yilu;ZHANG Yangping;LI Dongbo;SU Liantai;AO Yansong(School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China;College of Life Science and Resources and Environment,Yichun University,Yichun 336000,China;Shanghai Green Cube Agricultural Development Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]上海交通大学农业与生物学院,上海200240 [2]宜春学院生命科学与资源环境学院,宜春336000 [3]上海市绿立方农业发展有限公司,上海200120

出　　处：《上海农业学报》2021年第5期132-138,共7页Acta Agriculturae Shanghai

基　　金：上海市科技兴农项目[沪农科推字(2018)第3-1号]。

摘　　要：在植物工厂水培条件下,以散叶莴苣‘巴达维亚’、不结球白菜‘京研4号’和‘艳春’的3个品种为材料,进行涵盖全年的12个茬口栽培试验。根据试验数据,拟合出各个栽培茬口的生长曲线。分析结果表明:①3种绿叶菜的周年基本生长模型为指数型,其中散叶莴苣模型为y=0.242e^(0.192t),不结球白菜的杭白菜模型为y=0.360e^(0.190t),不结球白菜的青菜模型为y=0.410e^(0.137t)。②通过对特定品种多茬口模型参数比较,发现参数a变化较小,参数b的变化则与季节变化紧密相关。③利用绿叶菜生长最适温度时的b_(max)和周年基本生长模型的b结合温室实际温度,将1周年分为3个区间。当生长模型的b值低于b时,温度较低不利于绿叶菜的生长,需要采取主动加温措施;当b值介于b_(max)和b之间且温度低于生长最适温度时,为追求效益最大化,不需要采取主动调温措施;当b值小于b_(max)且温度高于生长最适温度时,需要采取适度降温措施。Under the condition of hydroponic culture in plant factory,a total of 12 times cultivation experiments covering the whole year were conducted using 3 varieties of lettuce and pakchoi as materials.The growth curves of each time were fitted according to the experimental data.The results showed that:①The annual average growth models of the three leafy vegetables were exponential model,of which the lettuce model was y=0.242e^(0.192t),the Chinese cabbage of pakchoi model was y=0.360e^(0.190t),the green grocery of pakchoi model was y=0.410e^(0.137t).②By comparing the coefficient of 12 models of a specific variety,it was found that the change in coefficient was small and the change in coefficient b was closely related to the temperature change in different seasons.③Use the b_(max) at the optimum temperature, b of the average growth model and the greenhouse temperature to divide one year into 3 groups of intervals.When b value of the growth model was lower than b,the temperature was too low for the growth of leafy vegetables,so the heating measures were needed.When b value was between b_(max) and b,the temperature was lower than the optimal growth temperature,so the temperature adjustment measures were not needed.When b value was less than b_(max) and the temperature was higher than the optimum temperature,active cooling measures were needed.

关 键 词：绿叶菜 生长模型 参数变异 季节 

分 类 号：S636[农业科学—蔬菜学]