include tags Meteorology

Agricultural meteorological experiment research method

Knowledge Title: Agricultural meteorological experiment research method Other Title: agrometeorological experimental method Knowledge Content:  A method for studying the relationship between agricultural production objects and their production processes and meteorological conditions. Parallel observation and analysis of the growth and development, yield formation and corresponding agrometeorological elements of agricultural production objects is the basic way to carry out agricultural meteorological experiments. In practice, the orthostations and techniques of meteorology, biology, mathematics, physics and geography are often used. Generally, we have to go through 3 processes of obtaining, organizing and analyzing the data. The scientific, representative and comparative nature of the technical methods selected for each process will directly affect the effect of the study.  Access to data is the basis of research, and it often has a decisive impact on the results of the study. At present, the research methods commonly used to obtain data are artificial environment simulation, natural environment experiment, field expedition and remote sensing information analysis, agricultural meteorological numerical simulation 5 categories.……

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Agricultural Meteorology

Knowledge Title: Agricultural Meteorology Other Title: agrometeorology Knowledge Content:  The study of the relationship between agricultural production and meteorological conditions and its laws. One of the basic disciplines of agricultural science, an important branch of applied meteorology in meteorology. The purpose of agrometeorology research is to constantly understand and solve the meteorological problems in production around the development and modernization of agriculture, and to put forward the optimal meteorological conditions and measures to promote agricultural production.  A brief history More than 3000 years ago, people have recognized the seasonal changes in spring, summer, autumn and winter and its agricultural significance. In ancient Chinese works, there have long been the discussion of “spring farming, summer, autumn harvest, winter collection” and “not contrary to the time of agriculture”; In the West, the Greeks were also able to determine the agricultural and sailing times of the year based on climate change, with two-to-two accounts.……

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Agricultural meteorological disasters

Knowledge Title: Agricultural meteorological disasters Other Title: meteorological hazards of agriculture Knowledge Content:  Natural disasters that have suffered losses in agricultural production as a result of adverse meteorological conditions. In ancient times, agricultural meteorological disasters caused great disaster to mankind. Plato in ancient Greece regarded “fire and water”, that is, drought and flooding as the main cause of the crisis of human destruction. China's history is also a frequent disaster of water and drought, not only agricultural production and people's lives and property suffered serious losses, but also many dynasties of social unrest is one of the important reasons. Even in recent times, meteorological disasters pose a great threat to agricultural production, such as severe drought, which has devastated agricultural land in the African region, and the constant reduction in agricultural production caused by adverse meteorological conditions worldwide is even more difficult to numerate.……

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Livestock Meteorology

Knowledge Title: Livestock Meteorology Other Title: meteorology concerning animal husbandry Knowledge Content:  An important aspect of agrometeorology. It mainly studies the relationship between meteorological conditions and animal husbandry production and its changing laws, including the effects of meteorological conditions on livestock and poultry fertility, introduction, disease control, grazing and feeding, grazing and grazing, and storage, transportation and preservation of livestock and poultry products. The study of livestock meteorology can also provide a basis for the development of livestock climate zoning.  Meteorological conditions and livestock fertility factors are: (1) temperature and humidity. Temperature is the main meteorological factor that affects the growth and development of livestock and poultry. Each animal has a suitable temperature range, in which the productivity, feed utilization, resistance and reproductive power of the livestock and poultry are high. Most livestock suitable temperature range is generally 8 to 20 degrees C.……

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Agricultural meteorological models

Knowledge Title: Agricultural meteorological models Other Title: agrometeorological model Knowledge Content:  A mathematical expression or text logic schema that represents the relationship between an agricultural production object or process and meteorological conditions. The former is an equation consisting of variables, parameters and constants based on various theoretical assumptions, while the latter is a logical block diagram of various words and symbols. Complex pattern system, by a special calculation program to solve the calculation. The application mode can study the favorable and adverse conditions in the process of agricultural production in different regions, estimate the process of agricultural production, and forecast the final output with high precision, so it is an important way to improve the quality of agricultural meteorological work and accelerate its quantification and theoreticalization.  Since the 1950s, the development of mathematical statistics has provided a prerequisite for the study of agricultural meteorological models in empirical statistics.……

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Forest meteorological disasters

Knowledge Title: Forest meteorological disasters Other Title: meteorological damage to forest Knowledge Content:  Various kinds of disaster weather caused harm to the growth and development of trees. Including low temperature, high temperature, drought, floods, snow damage, wind damage, rain, pollution and air pollution. The relationship between tree tree growth and development and meteorological factors can be shown as the most appropriate, highest and lowest limits. When meteorological factors change in the most appropriate interval, the growth and development of trees is the best; Different tree species, even the same tree species at different ages, their most suitable and endurance limits are different. Forest meteorological disasters can be divided into the following categories by way of harm.  Low temperature damage can be divided into the following types: (1) frost damage. Forest stoic hypothermia loses physiological vitality and suffers or dies.……

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Forecast of agricultural meteorological output

Knowledge Title: Forecast of agricultural meteorological output Other Title: agrometeorological yield forecast Knowledge Content:  A forecast of the final yield that may form the object of future agricultural production according to the change of meteorological conditions. One of the basis for drawing up the plan for the transportation, storage and import and export of agricultural products is also an important reference for the optimal management of farmland.  Research Overview The study of agricultural meteorological yield forecasting began in the early 20th century. Early stage of comparative and similar qualitative research, mainly the comparative analysis of crops and meteorological conditions, according to the similarity degree of forecasting harvest. Then there were some simple statistical studies. After the 1950s, with the development of biology and statistics, various regression simulation models of the relationship between crop yield-weather began, the method is usually the trend processing of yield historical data, and then establish a single or pluralistic linear or nonlinear regression model.……

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Fisheries Meteorology

Knowledge Title: Fisheries Meteorology Other Title: fishery meteorology Knowledge Content:  One aspect of agricultural meteorology mainly studies the effects of meteorological conditions on the fishing, breeding and processing of aquatic resources and aquatic products.  Changes in fisheries, changes in the number of fishery resources and the state of fishing operations are greatly affected by the wind. Wind restricts the change of temperature, and the temperature is closely related to the water temperature, which in turn causes the change of fishing position, fish migration and distribution, fishing season morning and evening, fish spawning and so on. In the early stage seiof, prevailing wind direction sways the temperature and water temperature, which can make the fishing season advance or delay. When the wind direction is perpendicular to the coast, the coastal wind can produce a coastal current, the fish can then swim to the nearshore sea, can increase the fixed net catch, the offshore wind is easy to produce rising currents, the seafloor nutrients and bait organisms to the surface, in order to create conditions for the formation of a good fishing ground.……

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Agricultural meteorological indicators

Knowledge Title: Agricultural meteorological indicators Other Title: agrometeorological index Knowledge Content:  It represents the requirements and quantitative values of meteorological conditions and reactions of agricultural production objects and agricultural production processes, which is the scientific basis and basis for measuring the advantages and disadvantages of agricultural meteorological conditions and carrying out agricultural meteorological work. The indicators applicable to agricultural climate analysis and agricultural climate zoning are also known as agricultural climate indicators.  Agricultural meteorological indicators are the use of agricultural meteorological observation, experimental survey data, as well as the use of agricultural and meteorological historical data, analysis, verification, correction, induction of the specific values, in the selected data within the range of relatively stable and representative. There are two kinds of indicators, single factor and multifactor, the latter is also known as the composite index. The single-factor indicator is expressed as the measure of a meteorological parameter, such as average temperature, precipitation, etc.……

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Meteorological and agricultural environmental pollution

Knowledge Title: Meteorological and agricultural environmental pollution Other Title: weather concerning environmental pollution Knowledge Content:  The degree of agricultural environmental pollution is closely related to meteorological conditions. Meteorological factors directly influence the transport, accumulation and diffusion of pollutants in the atmosphere, which also converts certain one-time pollutants into secondary pollutants, and also transforms atmospheric pollution into soil pollution or water pollution. Pollutants formed in the course of agricultural production are also transferred and diffused by meteorological conditions.  Different weather systems and meteorological factors play different roles in agricultural environmental pollution:  (1) Weather system. Under the control of low pressure, the air layer is unstable, and the air flow is rising, which is conducive to the diffusion and dilution of pollutants over farmland. Under the control of high pressure, the air layer is more stable, the air flow is dispersed and subsides, and the pollutants in the air are difficult to diffuse upward.……

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