LI Xingjie,HU Xiaotao,YANG Xin,et al.Effect of Humic Acid Application on Growth and Metal Elements Absorption of Nutrients by Lettuce in Hydroponic Culture[J].Northern Horticulture,2016,40(20):9-14.[doi:10.11937/bfyy.201620003]
腐植酸对水培生菜生长及矿质元素吸收特性的影响
- Title:
- Effect of Humic Acid Application on Growth and Metal Elements Absorption of Nutrients by Lettuce in Hydroponic Culture
- Keywords:
- humic acid; hydroponic lettuce; yield; WUE; metal elements absorption
- 文献标志码:
- A
- 摘要:
- 以香港玻璃脆生菜为试材，在日本山崎配方中添加6种不同浓度的腐植酸，处理后每10 d测定生菜的产量、水分消耗量及营养液中主要矿质元素含量，以研究腐植酸对水培生菜生长及矿质元素吸收的影响。结果表明：腐植酸浓度在0~1.41 mg·g-1内随着腐植酸浓度的增加，生菜地上部和地下部鲜干质量随之增加，腐植酸浓度为1.41 mg·g-1时，上述指标同时达到最大。腐植酸对营养液的酸碱度有缓冲作用。腐植酸浓度在0~1.41 mg·g-1内，随着其浓度的增加，生菜水分利用效率逐渐增大，对矿质元素的利用效率逐渐提高。腐植酸对生菜吸收矿质元素的影响不显著，不同的腐植酸处理，生菜吸收无机养分的能力不同。综合产量和矿质元素利用等因素，添加1.41 mg·g-1的腐植酸可达到高产、节水、省肥的生产效应。
- Abstract:
- To study the influence of humic acid application on growth and nutrient absorption of lettuce in hydroponic culture，six different mass concentration of humic acid were added in the famous Yamazaki formula，the yield and water consumption of lettuce were measured per ten days after treatments，so main mineral element content in hydroponic culture as.The results showed that the fresh weight and dry weight of hydroponic lettuce increased with the humic acid concentration raising with 0-1.41 mg·g-1.The 1.41 mg·g-1concentration humic acid，which was the concentration of the highest volume for each aforementioned index.Humic acid was cushion for the nutrient solution pH value.At the condition of 0-1.41 mg·g-1 concentration humic acid，water use efficiency (WUE) and use efficiencies of mineralelements increased with the humic acid concentration rising.The effect of humic acid application on nutrient absorption of lettuce was not significant.The ability to absorb inorganic nutrients was different with different humic acid concentration treatments.Synthesize the yield and nutrient absorption factor，effect of high yield，water saving，fertilizer production would achieve when humic acid with 1.41 mg·g-1 concentration were added in Yamazaki formula.
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备注/Memo
第一作者简介：李兴杰（1991-），女，硕士研究生，研究方向为节水灌溉理论与技术。E-mail：lxj33843356@163.com.责任作者：胡笑涛（1972-），男，博士，教授，现主要从事节水灌溉理论与技术研究等工作。E-mail：huxiaotao11@nwsuaf.edu.cn.基金项目：国家高技术研究发展计划（863计划）资助项目（2013AA103004）。