Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (1): 134-144.DOI: 10.3969/j.issn.1004-1524.20240005

• Environmental Science • Previous Articles     Next Articles

Adaptability and influencing factors of Atriplex canescens growth in Zhejiang Province, China

WANG Xiangjie1(), HAN Kefeng1, MA Zhengbo2, LOU Jin3, WANG Shuai4,5, WU Lianghuan1,*()   

  1. 1. Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
    2. Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
    3. Zhejiang Approaching Balance Foundation, Hangzhou 310063, China
    4. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    5. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-12-27 Online:2025-01-25 Published:2025-02-14

Abstract:

Atriplex canescens is a perennial semi-evergreen shrub of the genus Atriplex, family Chenopodiaceae. It has excellent characteristics of rapid growth, drought tolerance, barren tolerance, and salt and alkali resistance. In order to explore the adaptability of Atriplex canescens to the newly cultivated land in Zhejiang Province of China and the key factors affecting its growth and development in the typical subtropical monsoon climate, six representative sites of newly cultivated soil in Zhejiang Province were selected, and the survival and growth of Atriplex canescens were analyzed to determine its growth adaptability at each site. The main influencing factors were obtained through correlation analysis and redundancy analysis of the growth and living conditions of Atriplex canescens and climatic factors and soil environmental factors in different regions. The results showed that the survival rate and growth rate of Atriplex canescens planted in coastal salinic-alkali soil were higher than those planted in yellow and red soil. The dry matter weight of aboveground and underground parts in Beilun and Fenghua was significantly (P<0.05) higher than that in the other four areas, and the branching number was increased significantly by 67.48%-346.47% compared with the other areas. The soil electrical conductivity, soil pH value, annual rainfall and soil alkali hydrolysable nitrogen content were the main factors affecting the growth and survival of Atriplex canescens in different regions. In conclusion, Atriplex canescens could be planted in coastal saline-alkali land in Zhejiang Province. Priority should be given to planting sites with soil electrical conductivity of 9.51-14.28 dS·m-1, soil pH value of 7.60-8.16, annual rainfall of 1 087.7-1 359.7 mm and soil alkali hydrolysable nitrogen content of 18.43-35.00 mg·kg-1.

Key words: Atriplex canescens, soil improvement, saline-alkali tolerance, adaptability, newly cultivated land

CLC Number: