肥料和杀菌剂对黑桤木种子萌发和幼苗生长初期的影响

Q4 Agricultural and Biological Sciences
Mateusz Będkowski, W. Buraczyk
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引用次数: 0

摘要

摘要为了研究不同肥料和杀菌剂对黑桤木种子萌发和幼苗生长初期的影响,我们进行了室内试验。在培养皿上进行6次处理,每个培养皿含有30颗种子。发芽的基质是无菌滤纸,用两种杀菌剂、两种有机肥、一种矿物肥或蒸馏水(对照)的水溶液湿润。杀菌剂和肥料是按照制造商的建议施用的。为了将遗传变异降到最低,种子来自波兰东部Chotyłów林区种子林中的一棵树。在23°C±2°C的温度下萌发和生长,14 h/10 h日夜循环。除矿物肥处理在第3天第一次发芽外,种子早在播种后第2天就开始发芽。从给定种子发芽之日起至第15天,每天测量幼苗长度。研究发现,对照的发芽速度最快,而长度和干质量的最大增量发生在对照和施用N1肥料(仅包括腐植酸、壳聚糖和硅等形式的生长刺激物)的处理中。在F1杀菌剂(活性化合物Thiram)和有机肥N2(矿物成分和有机生长刺激剂的混合物)的影响下,观察到的生长最有限。在对照和N1(不含矿物质成分)处理下,根系发育最快。这也是仅有的两种处理方法,在15天后,根比茎长。氮肥对苗期萌发和苗期发育的影响最为不利。选定的肥料和杀菌剂在实验室条件下影响黑桤木种子和幼苗的事实并不意味着它们在野外条件下或对其他森林树种也会产生影响。因此,这种类型的研究将需要对每个森林树种单独进行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The impact of fertilisers and fungicides on seed germination and the initial phase of seedling growth in black alder Alnus glutinosa (Gaertn.)
Abstract To test the influence of selected fertilisers and fungicides on the germination of black alder seeds and the initial phase of seedling growth, we conducted a laboratory experiment outlined in this paper. Six treatments were applied on petri dishes each containing 30 seeds. The substrate for germination was sterile filter paper wetted with an aqueous solution of either one of two fungicides, two organic fertilisers, a mineral fertiliser or distilled water (control). Fungicides and fertilisers were applied according to the manufacturers' recommendations. In order to keep genetic variability to a minimum, seeds originated from a single tree in a seed stand located in the Chotyłów Forest District, eastern Poland. Germination and growth took place at a temperature of 23°C ± 2°C with a 14 h/10 h day/night cycle. Seeds began to germinate as early as the second day after sowing, except for the mineral fertiliser treatment, in which the first sprouting was observed on day 3. Seedling length was measured daily from the day of germination of a given seed through to day 15. Germination was found to proceed most rapidly in the control, while the largest increments in length and dry mass occurred in the control and fertiliser treatment with the so-called N1 fertiliser (solely comprising growth stimulators in the form of humic acids, chitosan and silicon). The most limited growth was observed under the influence of the F1 fungicide (active compound Thiram) as well as the organic fertiliser N2 (a mixture of mineral components and organic growth stimulators). Roots were found to develop most rapidly in the control and in the treatment with N1 (no mineral components). These are also the only two treatments in which the roots were longer than the stems after 15 days. Fertiliser N2 was found to have the most unfavourable influence on both, germination and the first phase of seedling development. The fact that selected fertilizers and fungicides affected black alder seeds and seedlings under laboratory conditions does not mean that they will have an impact under field conditions or on other forest tree species. Therefore, this type of research will need to be conducted individually for each forest tree species.
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来源期刊
USDA Forest Service - Research Papers PNW-RP
USDA Forest Service - Research Papers PNW-RP Agricultural and Biological Sciences-Forestry
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