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. 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. 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. 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.

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土壤曝气处理对有机质覆盖下真竹生理生化特性的影响

毛竹是我国南方广泛栽培的竹种之一。冬季普遍采用有机材料覆盖技术，以增加竹笋的产量和利润。然而，P. praecox 在连续使用该技术时不可避免地会下降。因此，我们进行了曝气研究，以探索竹子衰退的机制。对P. praecox进行覆盖和曝气处理50 d，在根和叶组织中研究了抗氧化酶、厌氧呼吸代谢酶和光合作用特性。覆盖处理导致竹子缺氧胁迫，而曝气改善了竹子生长。与覆盖处理相比，曝气处理显着提高了土壤氧含量。曝气处理导致竹根呼吸活性增加19.74%，但ADH、LDH、PDC、SOD、CAT、APX、GR活性分别降低64.98%、36.58%、57.78%、21.57%、33.33%、22.60%、和 32.06%，分别。此外，曝气处理大大增强了叶绿素的合成并改善了竹子的光合作用。有机材料覆盖引起的土壤缺氧抑制了竹子的生长，这可能是竹子衰退的关键因素。我们的结果表明，曝气有利于防止P. praecox 竹林的退化。曝气处理大大增强了叶绿素的合成，提高了竹子的光合作用。有机材料覆盖引起的土壤缺氧抑制了竹子的生长，这可能是竹子衰退的关键因素。我们的结果表明，曝气有利于防止P. praecox 竹林的退化。曝气处理大大增强了叶绿素的合成，提高了竹子的光合作用。有机材料覆盖引起的土壤缺氧抑制了竹子的生长，这可能是竹子衰退的关键因素。我们的结果表明，曝气有利于防止P. praecox 竹林的退化。