Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (1): 7-14.DOI: 10.3969/j.issn.1000-2561.2020.01.002

• Crop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Effects of Arbuscular Mycorrhizal Fungi on Nutrient Exchange in Mulberry Plant in Rocky Desertification Areas

WANG Yan1,XING Dan1,*(),SONG Lala1,HAN Shiyu1,CHEN Tingsu2   

  1. 1. Sericulture Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou 550006, China
    2. Institute of Microbiology, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China
  • Received:2019-05-23 Revised:2019-06-17 Online:2020-01-25 Published:2020-01-21
  • Contact: XING Dan

Abstract:

To determine the effect of arbuscular mycorrhizal fungi (AMF) on the nutrient exchange in the plant soil system in rocky desertification areas, the effects of inoculation of arbuscular mycorrhizal fungi on the nutrient content, stoichiometry of plant and soil were studied by simulating seasonal drought in rocky desertification areas. Two periods of normal water supply and natural drought were set up for Fm and Ri treatment. Mulberry was harvested after growth for 90 d, and the content of C, N, P and K in the plant and soil was measured. AMF could effectively enhance the growth of mulberry seedlings in the two periods. After the occurrence of drought stress, the growth promoting effect of Ri and its adaptability to mulberry was better than that of Fm. Drought stress reduced the content of C, N, P and K in mulberry seedlings. The mineral nutrition in the seedling was improved by AMF, especially for N and P. The C content in the root and stem of the seedling was significantly reduced. Under normal water supply conditions, the soil C content after Fm and Ri application decreased by 7.00% and 8.55% respectively. Under drought stress, the content of available N, P and K in the soil significantly increased after Fm and Ri application, but under normal water supply, the content of available N, P and K in soil decreased. AMF also inreased C/P and N/P ratio under drought stress. In summary, AMF could affect the absorption and distribution of C, N and P nutrient of mulberry tree and the coordination of plant soil system in C, N and P according to the changes of water supply and demand of nutrient resources.

Key words: arbuscular mycorrhizal fungi, rocky desertification, drought stress, stoichiometric number

CLC Number: