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Artificial Grassland Had Higher Water Use Efficiency in Year with Less Precipitation in the Agro-Pastoral Ecotone.
Zhao, Kun; Qu, Yan; Wang, Deping; Liu, Zhongkuan; Rong, Yuping.
Afiliação
  • Zhao K; College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China.
  • Qu Y; College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China.
  • Wang D; College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China.
  • Liu Z; Institute of Agro-Resource and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China.
  • Rong Y; College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China.
Plants (Basel) ; 12(6)2023 Mar 09.
Article em En | MEDLINE | ID: mdl-36986927
Improving plant water use efficiency is a key strategy for the utilization of regional limited water resources as well as the sustainable development of agriculture industry. To investigate the effects of different land use types on plant water use efficiency and their mechanisms, a randomized block experiment was designed in the agro-pastoral ecotone of northern China during 2020-2021. The differences in dry matter accumulation, evapotranspiration, soil physical and chemical properties, soil water storage and water use efficiency and their relationships among cropland, natural grassland and artificial grassland were studied. The results show that: In 2020, the dry matter accumulation and water use efficiency of cropland were significantly higher than those of artificial and natural grassland. In 2021, dry matter accumulation and water use efficiency of artificial grassland increased significantly from 364.79 g·m-2 and 24.92 kg·ha-1·mm-1 to 1037.14 g·m-2 and 50.82 kg·ha-1·mm-1, respectively, which were significantly higher than cropland and natural grassland. The evapotranspiration of three land use types showed an increasing trend in two years. The main reason affecting the difference of water use efficiency was that land use type affected soil moisture and soil nutrients, and then changed the dry matter accumulation and evapotranspiration of plants. During the study period, the water use efficiency of artificial grassland was higher in years with less precipitation. Therefore, expanding the planted area of artificial grassland may be one of the effective ways to promote the full utilization of regional water resources.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Clinical_trials Idioma: En Revista: Plants (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Clinical_trials Idioma: En Revista: Plants (Basel) Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China País de publicação: Suíça