草地学报

草地学报 ›› 2021, Vol. 29 ›› Issue (7): 1584-1588.DOI: 10.11733/j.issn.1007-0435.2021.07.027

• 研究简报 • 上一篇    下一篇

不同水分梯度对碱茅农艺性状的影响

王佳岚, 李春杰   

  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/兰州大学草地农业教育部工程研究中心/兰州大学微生物研究中心/兰州大学甘肃省西部草业技术创新中心/兰州大学草地农业科技学院, 甘肃 兰州 730020
  • 收稿日期:2021-01-23 修回日期:2021-03-30 出版日期:2021-07-15 发布日期:2021-07-31
  • 通讯作者: 李春杰,E-mail:chunjie@lzu.edu.cn
  • 作者简介:王佳岚(1997-),女,哈尔滨木兰人,硕士研究生,主要从事内生真菌牧草种子资源选育研究,E-mail:wangjl2019@lzu.edu.cn
  • 基金资助:
    国家973项目（2017CB138702）；国家自然科学基金（31971756）；中央高校基本科研业务费项目（LZUJBKY-2020-kb10）资助

Effect of Different Water Gradients on Agronomic Characters of Puccinellia distans

WANG Jia-lan, LI Chun-jie   

  1. State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, Center for Grassland Microbiome, Gansu Technology Innovation Center of Western China Grassland Industry, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu Province 730020, China
  • Received:2021-01-23 Revised:2021-03-30 Online:2021-07-15 Published:2021-07-31

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摘要： 为了探究碱茅（Puccinellia distans）对不同水分的耐受能力及生长最适的供水量，本试验通过温室盆栽方法对碱茅进行全生育期灌溉，按照土壤田间最大持水量（Field water content，FWC）共设定6个不同水分梯度，分别为W50（50% FWC），W60（60% FWC），W70（70% FWC），W80（80% FWC），W90（90% FWC），W100（100% FWC），观察不同水分梯度处理对碱茅多种农艺性状的影响。结果表明：碱茅的株高、分蘖、叶长、叶宽、叶面积、叶绿素含量、鲜重、干重和根干重等均随着水分含量增加而呈现先增加后减少的趋势，整体在W80处理下获得最大值，但多种指标与W70处理差异不显著；碱茅生长期对水分需求较大，在W90和W100处理下仍能维持生长但产量较差，而在W50长期处理下无法正常生长发育。综上所述：W70至W80处理为碱茅长势最好的水分处理梯度，整个生育期中水分过低条件下碱茅长势较差，但对水分较高时具有一定耐受性。

关键词: 碱茅, 水分梯度, 生长发育, 农艺性状

Abstract: In order to explore the tolerance of Puccinellia distans to different water gradients and the optimum water supply for growth. According to the maximum field capacity (Field water content),Puccinellia distans in this experiment was irrigated in the whole growth period in greenhouse by six different water gradients,which were W50 (50%FWC),W60 (60%FWC),W70 (70%FWC),W80 (80%FWC),W90 (90%FWC),and W100 (100%FWC).The effects of different water gradient treatments on various agronomic characters of Puccinellia distans were observed. The results showed that， many indexes such as plant height,tiller,leaf length,leaf width,leaf area,chlorophyll content,fresh weight,dry weight and root dry weight were increased at first and then decreased with the increase of water content. As a whole,the maximum value was obtained under W80 treatment,but there was no significant difference between W80 treatment and W70 treatment. Puccinellia distans had a large demand for water in the growing period,and it maintained normal growth with poor yield under the high water content of W90 and W100,but did not grow and develop normally under W50 long-term treatment. In this experiment,it found that W70 and W80 were the best water supply gradients for the growth of Puccinellia distans. To a certain extent,Puccinellia distans grew poorly under the low water content,but had a high tolerance for the high water content in their whole growth period.

Key words: Puccinellia distans, Different water gradients, Growth and development, Agronomic character

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