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草业学报 ›› 2019, Vol. 28 ›› Issue (5): 185-191.DOI: 10.11686/cyxb2018734

• 研究简报 • 上一篇    

适合于温室盆栽苜蓿的营养液比较研究

成凤花1, 胡进玲1, 史敏1, 党淑钟1, 李彦忠1,2,*   

  1. 1.兰州大学草地农业生态系统国家重点实验室,兰州大学农业农村部草牧业创新重点实验室,兰州大学草地农业科技学院,甘肃 兰州730020;
    2.中国农业科学院草原研究所,内蒙古 呼和浩特010010
  • 收稿日期:2018-11-08 修回日期:2019-02-25 出版日期:2019-05-20 发布日期:2019-05-20
  • 通讯作者: E-mail: liyzh@lzu.edu.cn
  • 作者简介:成凤花(1992-),女,甘肃陇南人,在读硕士。E-mail: chengfh16@lzu.edu.cn
  • 基金资助:
    中央高校基本科研业务费(lzujbky-2017-k02),公益性行业(农业)科研专项经费项目(201303057),国家现代农业产业技术体系(CARS-34),云南省高端科技人才引进项目(2012HA012)和高等学校学科创新引智计划(B12002)资助

A comparative study on nutrient solutions suitable potted alfalfa plants in a greenhouse

CHENG Feng-hua1, HU Jin-ling1, SHI Min1, DANG Shu-zhong1, LI Yan-zhong1,2,*   

  1. 1.State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China;
    2.Institute of Grassland Research, Chinese Academy of Agricultural Sciences(CAAS), Hohhot 010010, China;
  • Received:2018-11-08 Revised:2019-02-25 Online:2019-05-20 Published:2019-05-20
  • Contact: E-mail: liyzh@lzu.edu.cn

摘要: 健康的盆栽苜蓿植株是致病性测定等室内科学试验的前提,其生长极易受土壤营养供应的影响。为选择温室盆栽条件下紫花苜蓿健康生长所需要的适宜营养液,本研究将萌发2 d的苜蓿幼苗移栽于装有灭菌土的花盆中,出苗至第4周收获期间,分别浇灌施可得植物生长液、霍格兰氏营养液、自来水和蒸馏水,分析比较苜蓿幼苗在4周期间的长势、生长速率、株高以及生物量等指标。结果表明:施可得植物生长液明显优于其他处理,此处理下植株生长最旺盛,未出现叶片变色、干枯,且植株高大、枝叶繁茂、叶片嫩绿,分枝数4.28个·株-1,生长速率达1.15 cm·d-1(自来水的仅为0.28 cm·d-1),而其余处理植株在第4周时或多或少出现叶片干枯甚至死亡的植株,也未出现分枝;霍格兰氏营养液次于施可得植物生长液,蒸馏水和自来水处理的植株其各项指标无显著差异;与浇灌自来水相比,浇灌施可得植物生长液的植株的株高、地上鲜重、地上干重、根鲜重、根干重、根表面积、根直径、叶片数和节间数分别增加256%、731%、655%、384%、445%、101%、27%、84%和112%,均显著(P<0.05)增加,浇灌霍格兰氏营养液的以上指标分别显著(P<0.05)增加88%、117%、188%、105%、117%、40%、7%、30%和40%。

关键词: 紫花苜蓿, 施可得植物生长液, 霍格兰氏营养液, 自来水, 生长状况

Abstract: Healthy potted alfalfa plants grown in a greenhouse are commonly used in pathogenicity tests. The growth of such test plants is strongly influenced by the environmental conditions, especially nutrient supply. In order to determine the most suitable nutrient solution for the healthy growth of potted alfalfa plants, two-day-old seedlings were transplanted into pots filled with sterilized soil, and supplied either compound fertilizer (CF), Hoagland's solution (HS), tap water (TW), or distilled water (DW). Plant growth status, plant heights and other data were recorded during the next four weeks, and biomass of seedlings at the end of the fourth week was determined. It was found that CF was obviously superior to other treatments; in this treatment, the plant growth status was the healthiest, and the leaves of the CF plants had no discoloration or dryness. Moreover, the growth rate of these plants was up to 1.15 cm·d-1 with on average 4.28 branches per plant whereas the growth rate of TW plants was just 0.28 cm·d-1 with no branches formed. The leaves of the TW plants were more or less dry or had even died by the end of the 4th week. Hoagland's nutrient solution proved inferior to the plant growth fertilizer. There were no significant differences between the DW and TW plants. Compared with TW plants, plant height, fresh weight, ground dry weight, root fresh weight, root dry weight, root surface area, root diameter, numbers of leaves and internode numbers of CF plants were increased, respectively, by 256%, 731%, 655%, 384%, 445%, 101%, 27%, 84% and 112%, with P<0.05 in all cases. For comparison, corresponding plant size increases for HS plants were 88%, 117%, 188%, 105%, 117%, 40%, 7%, 30% and 40%, respectively (P<0.05).

Key words: Medicago sativa, compound fertilizer, Hoagland's nutrient solution, tap water, plant growth status