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首页> 外文期刊>Journal of Arboriculture >Response of English oak (Quercus robur L.) trees to biostimulants application in the urban environment
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Response of English oak (Quercus robur L.) trees to biostimulants application in the urban environment

机译：英国栎树（Quercus robur L.）对城市环境中生物刺激剂施用的响应

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The influence of two biostimulants on leaf gas exchanges and leaf characteristics of English oak (Quercus robur L.) was evaluated in a urban environment over two growing seasons. Trunk diameter and shoot growth were also monitored. Treatments included 1) control (no biostimulants); 2) Root Grow WP~(TM), a commercial hydrosoluble powder made of a mix of humic acids, marine algae, Yucca extracts, vitamins, amino acids, and nitrogen-fixing bacteria; and 3) Mycobacter DP~(TM), a commercial granular mixof endo- and ectomycorrhizal fungi, biostimulants bacteria, humic acids, carbohydrates, vitamins, acrylamide, Yucca extracts, and marine algae. No statistical differences were found on trunk diameter increase and shoot growth. Photosynthesis, evaporation rate, and water-use efficiency were higher in plants treated with biostimulants than control plants on every observation date. No differences were found regarding leaf fresh/dry weight ratio and specific leaf weight, while chlorophyll content, leaf area, and leaf dry weight were higher in the treated plants, especially in the second year after planting. Nitrogen concentration in leaf tissue was higher in the treated trees, while the content of the other mineral nutrients was not affected by the products. No differences emerged between the two biostimulants used. Though this study supports the utility of biostimulants application as an aid to promote plant establishment in adverse sites, especially in terms of plant physiology, it is difficult to makespecific recommendations on their application and on the choice of the best biostimulant product for Quercus robur in our conditions.
机译：在两个生长季节的城市环境中，评估了两种生物刺激剂对英国橡木（Quercus robur L.）的叶片气体交换和叶片特性的影响。还监测了树干直径和枝条生长。治疗包括1）对照（无生物刺激剂）; 2）Root Grow WP_TM，一种由腐殖酸，海藻，丝兰提取物，维生素，氨基酸和固氮菌的混合物制成的商业水溶性粉末; 3）分枝杆菌DP TM，其为内生和外生菌根真菌，生物刺激性细菌，腐殖酸，碳水化合物，维生素，丙烯酰胺，丝兰提取物和海藻的商业颗粒混合物。树干直径增加和枝条生长没有统计学差异。在每个观察日期，生物刺激剂处理过的植物的光合作用，蒸发速率和水分利用效率均高于对照植物。在处理后的植物中，叶鲜/干重比和比叶重没有发现差异，而叶绿素含量，叶面积和叶干重更高，尤其是在种植后的第二年。处理过的树木叶片组织中的氮含量较高，而其他矿质养分的含量不受产品的影响。所使用的两种生物刺激剂之间没有差异。尽管这项研究支持使用生物刺激剂作为辅助手段，以促进不良地点的植物生长，特别是在植物生理学方面，但是在我们的应用中以及在我们的栎类选择最佳生物刺激产品的选择方面，尚难以做出具体建议。条件。

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