The role of ectomycorrhization with Scleroderma sp. in promoting substrate nutrients mobilization under phosphorus-enriched compost amendment: A case study with Castanea henryi seedlings
The role of ectomycorrhization with Scleroderma sp. in promoting substrate nutrients mobilization under phosphorus-enriched compost amendment: A case study with Castanea henryi seedlings
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DOI：
10.1016/j.foreco.2023.120823
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发表时间：
2023-03
影响因子：
3.7
通讯作者：
Wang Chen;Libing He;Shiyi Tian;D. Yuan;J. Masabni;H. Xiong;F. Zou
中科院分区：
文献类型：
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作者：
Wang Chen;Libing He;Shiyi Tian;D. Yuan;J. Masabni;H. Xiong;F. Zou
生态林业是指从苗期到成熟期的持续、可持续的生产经营。目前，在商品林应用中，外生菌根真菌在苗木生产的养分管理中发挥着重要的作用。此外，富磷堆肥(PEC)被认为是一种环境清洁的土壤改良剂，在苗木生产中具有很大的潜力。然而，关于这两种可持续措施对锥栗幼苗生长和养分吸收的具体拮抗或协同作用，人们知之甚少。本试验旨在评价ECM接种(Sharddermasp.)以及三种不同施肥量(0%、15%、35%v：v)的富磷板栗林绿色垃圾堆肥(CFG；PEC的典型形式)。结果表明，CFG显着增加了植物对大部分养分的积累，但降低了对铜、锌的吸收。土壤根际有效磷含量与地上部分生物量呈极显著正相关(F=111.570，p<；P<0.01)。接种硬皮病。低肥(15%)处理显著促进土壤根际磷的活化，而不施肥(0%)或高肥(35%)处理对土壤根际磷的促进作用有限。结构方程模拟表明，接种处理根际土壤酸性磷酸酶活性的提高是提高土壤磷的生物有效性和植物光合作用能力的主要因素。我们的结果更好地解释了ECM对PEC营养来源的相互作用，并提供了一个以生物调控的营养供应系统为基础的低成本和可持续的商业繁殖系统。
Ecological forestry means continuous and sustainable management of production from the seedling to the adult stage. At present, ectomycorrhizal (ECM) fungi plays an important role in the nutrient management of seedling production in commercial forestry applications. Additionally, phosphorus-enriched compost (PEC) is considered as an environmentally cleaner soil amendment with a great potential in seedling production. However, little is known about the specific antagonistic or synergistic effects of these two sustainable practices onCastanea henryiseedling growth and nutrient uptake. An experiment was conducted to evaluate the effects of ECM inoculation (Sclerodermasp.) and three different application rates (0 %, 15 %, 35 % v:v) of phosphorus-enriched chestnut forest green waste compost (CFG; a typical form of PEC). Results indicated that CFG significantly increased the accumulation of most nutrients in plants but decreased the uptake of Cu and Zn. Without ECM inoculation, there was a significant positive correlation between soil rhizosphere bioavailable P content and aboveground seedling biomass (F = 111.570,p< 0.01). Inoculation ofSclerodermasp. significantly stimulated P mobilization in the soil rhizosphere of the low fertilization treatment (15 %) but had limited benefit in the non-fertilization (0 %) or high fertilization (35 %) treatments. The structural equation modeling indicated that the increase in activity of the rhizosphere soil acid phosphatase was the primary factor that increased soil P bioavailability and plant photosynthetic capacity in the inoculated treatments. Our results better explain the interaction of ECM on PEC sources of nutrients, and provide a low-cost and sustainable commercial propagation system underpinned by biologically regulated nutrient supply systems.