添加高炉渣对水培生菜生长的影响
本文选题：无土栽培 切入点：生菜 出处：《内蒙古农业大学》2017年硕士论文
【摘要】：[目的]探究适合生菜生长的水培地下水配方,在适合水培地下水配方基础上,进一步探究添加高炉渣对水培生菜生长的影响。[方法]以生菜(品种为GRAND RAPIDS TBR)为试验材料,采用水培方式,以全素、无钙无镁、半钙无镁、半镁无钙、半钙半镁营养液配方为处理,定植45天后测量其对生菜形态指标、营养指标的影响。再将筛选出的适合的营养液配方(60L)中添加0、100、200、300g高炉渣,定植45天后测定其对生菜形态指标、营养指标和光合指标的影响。[结果]①半钙无镁的营养液配方比对照CK和其他各处理显著提高了株高、地上部鲜重、维生素C、维生素E、叶绿素等指标,显著降低了亚硝酸盐的含量。②当60L营养液中添100和200g高炉渣的情况下,生菜的生长状况均佳,长势旺盛;添加100g高炉渣显著提高了株高、地上部鲜重、地上部干重、维生素E含量、气孔导度、胞间CO2浓度、蒸腾速率等,添加200g高炉渣显著提高了生菜地下部相关指标以及可溶性糖、叶绿素含量、净光合速率等。[结论]半钙无镁的营养液配方表现最好,显著提高生菜和品质,且栽培效果优于全营养液配方。60L营养液中添加100-200g高炉渣,对生菜的生长、品质都起到明显的促进作用,可以提高生菜的叶绿素含量和光合作用性能。
[Abstract]:[objective] to explore the formula of hydroponic groundwater suitable for lettuce growth and the effect of adding blast furnace slag on the growth of hydroponic lettuce.[methods] lettuce (GRAND RAPIDS TBR) was used as the experimental material. After 45 days of planting, the morphological indexes of lettuce were measured by hydroponics, with the formula of total element, no calcium and magnesium, half calcium without magnesium, half magnesium without calcium, and half calcium and half magnesium.Effects of nutritional indicators.After 45 days of planting, the effects of 0100200300g blast furnace slag on the morphology, nutrition index and photosynthetic index of lettuce were determined.[results] 1the formula of semicalcium-magnesium free nutrient solution significantly increased plant height, fresh weight of shoot, vitamin C, vitamin E, chlorophyll and so on, compared with CK and other treatments.Under the condition of adding 100 and 200 g blast furnace slag to 60L nutrient solution, the growth condition of lettuce was good, and the growth of lettuce was strong, and the plant height, fresh weight of shoot and dry weight of aboveground were significantly increased by adding 100 g blast furnace slag.Vitamin E content, stomatal conductance, intercellular CO2 concentration, transpiration rate and 200g blast furnace slag significantly increased the contents of soluble sugar, chlorophyll and net photosynthetic rate.[conclusion] the formula of semicalcium-magnesium free nutrient solution has the best performance, and obviously improves the lettuce and quality, and the effect of cultivation is better than that of adding 100-200g blast furnace slag to the nutrient solution of total nutrient solution .60L, which plays a significant role in promoting the growth and quality of lettuce.It can improve chlorophyll content and photosynthesis performance of lettuce.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S636.2
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