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单词 hotbed
释义

hotbed


hot·bed

H0290200 (hŏt′bĕd′)n.1. An environment conducive to vigorous growth or development, especially of something undesirable: a hotbed of intrigue.2. A bed of soil that is covered with glass, fiberglass, or plastic, is heated with fermenting manure or by electricity, and is used for germinating seeds or protecting tender plants.

hotbed

(ˈhɒtˌbɛd) n1. (Botany) a glass-covered bed of soil, usually heated by fermenting material, used for propagating plants, forcing early vegetables, etc2. a place offering ideal conditions for the growth of an idea, activity, etc, esp one considered bad: a hotbed of insurrection.

hot•bed

(ˈhɒtˌbɛd)

n. 1. a boxlike glass structure covering a bed of earth that is heated by electric cables or fermenting manure, for growing plants out of season. 2. a place or environment favoring rapid growth or spread, esp. of something unwanted. [1620–30]

Hotbed

A heated bed of soil used for early planting of vegetables. Heating was usually from buried decaying animal waste.
Thesaurus
Noun1.hotbed - a situation that is ideal for rapid development (especially of something bad); "it was a hotbed of vice"situation, state of affairs - the general state of things; the combination of circumstances at a given time; "the present international situation is dangerous"; "wondered how such a state of affairs had come about"; "eternal truths will be neither true nor eternal unless they have fresh meaning for every new social situation"- Franklin D.Roosevelt
2.hotbed - a bed of earth covered with glass and heated by rotting manure to promote the growth of plantsbed - a plot of ground in which plants are growing; "the gardener planted a bed of roses"

hotbed

noun breeding ground, nest, den a hotbed of racial intolerance
Translations
focolaio

hotbed


hotbed of (something)

A place or environment full of something or where something is apt to proliferate, often something unpleasant. It seems our old town has become a hotbed of crime in the years since we've lived there.See also: hotbed, of

hotbed of something

Fig. a nest of something; a gathering place of something. This office is a hotbed of lazy people. My class is a hotbed of nerds.See also: hotbed, of

hotbed of something

n. a nest of something; a gathering place of something. This office is a hotbed of lazy people. See also: hotbed, of, something

hotbed


hotbed,

low, glass-covered frame structure for starting tender plants. It differs from a cold framecold frame,
in horticulture, sun-heated board frame covered with a removable top of glass or other transparent material and sunk into the ground. The top may be solid or slatted or screened for shade.
..... Click the link for more information.  only in that the soil is heated—either artificially as by underground electric wiring or steampipes, or naturally with partially fermented stable manure, which is mixed with dead leaves or straw, placed in the bottom of the hotbed frame, and covered with a layer of soil. Heat is produced by the decaying organic matter. Proper ventilation is important, as is thermostatic control of artificially heated hotbeds. Tomatoes, cucumbers, celery, and other crops can be grown in hotbeds in the spring.

Hotbed

 

a structure for starting vegetable and flowering plants and for raising vegetables and seeds. Hotbeds are commonly used in countries located at northern latitudes above 40°. There are two types of hotbeds: single-pitched and double-pitched. Both types may be sunken or aboveground. Above-ground hotbeds may be stationary or portable. The heating source may be solar, biological (biological fuels), or technological (water, steam, or electrical). In cold weather, hotbeds are covered with a glass sash or, less frequently, translucent film. Hotbeds may be used at various times during the growing season (early, middle, or late).

Sunken single-pitched hotbeds are essentially trenches covered with sashes. Such hotbeds usually are heated by fermenting vegetable substances. Less frequently, they are heated with water or electricity. Besides the trench and sash, a hotbed has a reinforced-concrete or wooden frame to ensure that the sash fits tightly and securely. Early-season hotbeds are used from late February to early March (in the central European USSR), mid-season hotbeds are first used in late March, and late-season hotbeds are used beginning in early April. The standard dimensions of hotbeds are 160 X 106 cm. Hotbeds with reinforced-concrete frames are common in the central European USSR and in the south. Hotbeds with wood frames last eight to 12 years, and those with reinforced-concrete frames last 20 to 25 years.

In northern regions characterized by swamps or permafrost, stationary single-pitched hotbeds are used. The structures are built aboveground, and no foundation pits are dug. The hotbeds and the spaces between them are filled with biological fuel.

Portable single-pitched aboveground hotbeds are constructed without foundation pits and have four to six sashes. Heated biological fuel is distributed on an area cleared of snow. The fuel is 50–60 cm thick for mid-season hotbeds and 30–40 cm thick for late-season hotbeds. The frame is placed above the fuel.

Double-pitched hotbeds are not widely used owing to the looseness of seams between the glass sashes set up on both sides of the hotbed. Exceptions are the Riga and Suzdal’ double-pitched hotbeds.

Before the construction of hotbeds, the site is leveled, and the distribution of the trenches is planned. Hotbeds are distributed within a rectangular area, with 30 standard-size hotbeds, or 600 sashes, in each area. The rectangular area is 72 m long and 21.2 m wide (equal to the length of a 20-frame hotbed). The end paths, measuring 10 m wide and running from north to south, prevent soil erosion. Paths measuring 15 m wide help conserve the biological fuel. Wide paths alternate with narrow ones. Paths between rectangles, running parallel to the hotbeds, are 5 m wide. Such a distribution of hotbeds makes possible the construction of 2,500 frames on 1 hectare. On farms using hotbeds heated by biological fuel, the hotbeds are arranged in strips leaving a path 2.5 m wide between every two hotbeds and a path 0.7 m wide between hotbeds.

Seedlings and hotbed crops are raised on various substrates (soil mixtures), which are spread over the biological fuel or on top of heaters.

REFERENCES

Boos, G. V. Ovoshchnye kul’tury v zakrytom grunte. Leningrad, 1968.
Rubtsov, M. I., and V. P. Matveev. Ovoshchevodstvo. Moscow, 1970.
Spravochnik po ovoshchevodstvu. Editor in chief V. A. Bryzgalov. Leningrad, 1971.

G. V. BOOS

hotbed

[′hät‚bed] (agriculture) A bed of soil enclosed by a low frame with glass panels and heated by fermented manure or electric cables; used for forcing tender plants to grow out of season or to protect tender exotic plants. (metallurgy) An area where hot-rolled metal is placed to cool. Also known as cooling table.

hotbed

A small low enclosure heated by fermented manure or electric cables and usually covered with glass; used for forcing bedding plants and vegetables to grow out of season or for protecting tender exotics.

hotbed

a glass-covered bed of soil, usually heated by fermenting material, used for propagating plants, forcing early vegetables, etc.

HOTBED


AcronymDefinition
HOTBED➣Handing on Tradition by Electronic Dissemination (UK)

hotbed


  • noun

Synonyms for hotbed

noun breeding ground

Synonyms

  • breeding ground
  • nest
  • den

Words related to hotbed

noun a situation that is ideal for rapid development (especially of something bad)

Related Words

  • situation
  • state of affairs

noun a bed of earth covered with glass and heated by rotting manure to promote the growth of plants

Related Words

  • bed
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更新时间：2025/1/31 9:35:34