摘要
[目的]获得适合醋糟基质栽培水果型黄瓜的营养液配方和与其相配套的营养液管理方案。[方法]以水果型黄瓜‘戴多星’为试材,通过三因素(N、K、Ca)五水平二次回归响应面设计方法,建立水果型黄瓜产量与三因子的二次回归数学模型,选出适合水果型黄瓜无土栽培的营养液配方,并对优选出的配方进行验证。[结果]三因素对产量均有一定的影响,影响的大小依次为N、K、Ca;N和K之间存在极显著的交互作用(P<0.01),Ca与N、K之间的交互作用对产量影响不显著(P>0.05);多元二次回归分析结果显示,N、K与产量之间的回归模型极显著(P<0.01)。统计分析确定水果型黄瓜醋糟无土栽培最优营养液配方为20.67mmol·L-1N、10.58mmol·L-1K、4.54mmol·L-1Ca,在此条件下,水果型黄瓜的产量预测值为每株638.8g。验证试验表明,模拟最优营养液配方处理(20.67mmol·L-1N、1mmol·L-1P、10.58mmol·L-1K、4.54mmol·L-1Ca、2mmol·L-1Mg)的植株开花结果期生长状况良好,各叶位的净光合速率和蒸腾速率均显著高于其他处理,单株产量最高,且果实品质显著优于其他处理。[结论]本文通过建立二次回归数学模型获得了黄瓜醋糟基质栽培最优营养液配方,为实际应用提供了理论依据和技术支持。
[Objectives]We expand the test in order to get the nutrient solution formula for the cucumber cultivation with substrate and its corresponding nutrient solution management solution.[Methods]As test materials to mini-cucumber deltastar,a quadratic regression mathematical model of yield and three factors（N,K,Ca） was set up by the method of quadratic regression response surface design.[Results]The results showed that three factors had certain effects on mini-cucumber yield,and the order of the influence was： N,K,Ca.There were obvious interactions between N and K（P〈0.01）.However,the interactions between Ca and N,K were not significantly different（P〉0.05）.The multivariate quadratic egression model of the yield of mini-cucumber and N,K was highly significant（P〈0.01）.The optimal nutrient solution formula was that the nitrogen level was 20.67mmol·L^-1,the potassium level was 10.58mmol·L^-1and the calcium level was 4.54mmol·L^-1.Under this condition,the yield of mini-cucumber was 638.8 g per plant.The results of verification test showed that plants in the treatment of the optimal nutrient solution formula（20.67mmol·L^-1N,1mmol·L^-1P,10.58mmol·L^-1K,4.54 mmol·L^-1Ca,2mmol·L^-1Mg） grew well in the blossom period.The net photosynthetic rate and the transpiration rate of three positions were obviously higher than other treatments.The fruit quality of the treament was significantly better than other treatments and the yield per plant was the highest.[Conclusions]Through the establishment of quadratic regression mathematical model for the optimal nutrient solution formula of cucumber cultivation,this paper should provide the theoretical basis and technical support for practical applications.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
2015年第2期197-204,共8页
Journal of Nanjing Agricultural University
基金
国家大宗蔬菜产业技术体系(CARS-25-C-03)
关键词
黄瓜
基质
营养液配方
产量
cucumber
substrate
nutrient solution formula
yield
