Pig manure vermicompost as a component of a horticultural bedding plant medium: effects on physicochemical properties and plant growth.
Pig manure vermicompost as a component of a horticultural bedding plant medium: effects on physicochemical properties and plant growth.
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DOI：
10.1016/s0960-8524(00)00172-3
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发表时间：
2001-05
影响因子：
11.4
通讯作者：
R. Atiyeh;C. Edwards;S. Subler;J. Metzger
中科院分区：
文献类型：
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作者：
R. Atiyeh;C. Edwards;S. Subler;J. Metzger
本实验的目的是表征一个标准的商业园艺，温室容器，垫植物培养基（Metro-Mix 360）的物理，化学和微生物学特性，已被替换为一系列增加浓度（0%，5%，10%，25%，50%和100%体积）的猪粪蚯蚓粪，并将这些特性与植物生长反应。生长试验使用番茄（Lycopersicon esculentum Mill.），在温室条件下在替代培养基中生长31天，对于每个处理，在20个盆中记录幼苗生长。一半的番茄幼苗（每个处理10盆）每天用液体无机肥料浇水，而另一半只接受水。总孔隙率的百分比，空气空间的百分比，pH值和铵浓度的容器介质都显着下降后，与等量的猪粪蚯蚓粪的Metro-Mix 360替代;而体积密度，容器容量，电导率，整体微生物活性和硝酸盐浓度，都增加了蚯蚓粪的替代。番茄幼苗在含有100%猪粪蚯蚓粪的盆栽混合物中的生长减少，可能是由于蚯蚓粪中的可溶性盐浓度高，孔隙度和通气性较差。番茄幼苗的生长是最大的Metro-Mix 360与25%和50%之间的猪粪蚯蚓粪，与更多的增长发生在组合的猪粪蚯蚓粪定期处理的液体肥料溶液比那些没有施肥。这些混合物中的一些生长增强似乎与介质中改进的孔隙度、通气性和保水性以及基质的高硝酸盐含量的综合效应有关，这产生了植物组织对氮的吸收增加，从而导致植物生长增加。当番茄幼苗每天浇水与液体无机肥，Metro-Mix 360与一个非常少量的（5%）的猪粪蚯蚓粪的替代导致番茄幼苗的生长显着增加。这种影响不能仅仅归因于猪粪蚯蚓粪的营养或物理特性。因此，似乎可能是猪粪蚯蚓粪提供了其他生物投入，如植物生长调节剂进入容器介质，仍然需要充分确定。
This experiment was designed to characterize the physical, chemical and microbial properties of a standard commercial horticultural, greenhouse container, bedding plant medium (Metro-Mix 360), that had been substituted with a range of increasing concentrations (0%, 5%, 10%, 25%, 50% and 100% by volume) of pig manure vermicompost and to relate these properties to plant growth responses. The growth trials used tomatoes (Lycopersicon esculentum Mill.), grown in the substituted media for 31 days under glasshouse conditions, with seedling growth recorded in 20 pots for each treatment. Half of the tomato seedlings (10 pots per treatment) were watered daily with liquid inorganic fertilizer while the other half received water only. The percentage total porosity, percentage air space, pH and ammonium concentrations of the container medium all decreased significantly, after substitution of Metro-Mix 360 with equivalent amounts of pig manure vermicompost; whereas bulk density, container capacity, electrical conductivity, overall microbial activity and nitrate concentrations, all increased with increasing substitutions of vermicompost. The growth of tomato seedlings in the potting mixtures containing 100% pig manure vermicompost was reduced, possibly as a result of high soluble salt concentrations in the vermicompost and poorer porosity and aeration. The growth of tomato seedlings was greatest after substitution of Metro-Mix 360 with between 25% and 50% pig manure vermicompost, with more growth occurring in combinations of pig manure vermicompost treated regularly with a liquid fertilizer solution than in those with no fertilizer applied. Some of the growth enhancement in these mixtures seemed to be related to the combined effects of improved porosity, aeration and water retention in the medium and the high nitrate content of the substrate, which produced an increased uptake of nitrogen by the plant tissues, resulting in increased plant growth. When the tomato seedlings were watered daily with liquid inorganic fertilizer, substitution of Metro-Mix 360 with a very small amount (5%) of pig manure vermicompost resulted in a significant increase in the growth of tomato seedlings. Such effects could not be attributed solely to the nutritional or physical properties of the pig manure vermicompost. Therefore, it seems likely that the pig manure vermicompost provided other biological inputs, such as plant growth regulators into the container medium, that still need to be identified fully.