Effect of soil aeration treatment on the physiological and biochemical characteristics of Phyllostachys praecox under th
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Effect of soil aeration treatment on the physiological and biochemical characteristics of Phyllostachys praecox under the organic material mulching Zhuangzhuang Qian & Shunyao Zhuang & Renyi Gui & Luozhong Tang
Received: 23 August 2020 / Revised: 12 November 2020 / Accepted: 15 November 2020 # Springer Nature Switzerland AG 2020
Abstract Aims Phyllostachys praecox is one of the bamboo species that cultivated extensively in southern China. An organic material mulching technique is commonly adopted in winter to increase the yield of bamboo shoots and profits. However, P. praecox is inevitable to be declined when using the technique continuously. Accordingly, we conducted an aeration study to explore the mechanism of the bamboo recession. Methods P. praecox were subjected to mulching and aeration treatments for 50 days, antioxidant enzymes, anaerobic respiratory metabolizing enzymes, and photosynthesis characteristics were investigated in root and leaf tissues. Results The mulching treatment led to bamboo hypoxia stress, while the aeration improved bamboo growth. Compared with mulching treatment, the aeration
treatment significantly increased the soil oxygen content. Aeration treatment led to increases in the bamboo root respiratory activity by 19.74%, but decreased ADH, LDH, PDC, SOD, CAT, APX, GR activities by 64.98%, 36.58%, 57.78%, 21.57%, 33.33%, 22.60%, and 32.06%, respectively. Moreover, the aeration treatment greatly enhanced chlorophyll synthesis and improved bamboo photosynthesis. Conclusions Soil hypoxia induced by the organic material mulching inhibited bamboo growth, which might be the critical factor in the bamboo recession. Our results indicated aeration was conducive to preventing the degeneration of the P. praecox bamboo forest. Keywords Phyllostachys praecox . Organic material mulching technique . Drilling aeration . Hypoxia . Physiology . Photosynthesis efficiency
Responsible Editor: Gustavo Gabriel Striker. Z. Qian : L. Tang (*) Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, People’s Republic of China e-mail: [email protected] S. Zhuang State Key Lab of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China R. Gui State Key Lab of Sub-tropical Silviculture, Zhejiang A & F University, Hangzhou 311300, People’s Republic of China
Introduction Bamboo is one of the most important species in the forest resources of the world, with a total area of 31.5 million ha globally, and represents approximately 0.8% of the total global forest area (Zhang et al. 2019; Guo et al. 2020a). China has abundant bamboo resources, as one of the major bamboo species, Phyllostachys praecox bamboo has been cultivated over large areas in southern China for its edible bamboo shoots due to the high economic profit (Liu et al. 2017; Guo et al. 2020b). In order to produce the bamboo shoots earlier and increase the yield, an in
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