Brief introduction of agrometeorology

Agriculture is mainly a production activity under natural conditions. A certain combination of light, heat, water and gas is beneficial to a certain production and forms effective agricultural natural resources; Another different combination is harmful to agricultural production and constitutes agricultural natural disasters. The basic task of agrometeorology is to study the temporal and spatial distribution law of these agricultural natural resources and agricultural natural disasters, to serve the division and planning of agriculture, the rational distribution of crops, the artificial adjustment of microclimate and the cultivation and management of crops, to carry out agrometeorological forecasting and information services, and to provide advice and suggestions for agricultural production, so as to make rational use of climatic resources, avoid unfavorable meteorological factors, and take appropriate agricultural measures to promote high agricultural yield, reduce costs and improve economic benefits. Book name: agrometeorology

Author: Yao Yunsheng

Press: Higher Education Press

Publication date: May 29

ISBN: 978742652

folio: 16th "Agrometeorology" is a national planning textbook for the 11th Five-Year Plan of general higher education. Agricultural Meteorology pays attention to the cultivation of students' practical ability, and simplifies the theoretical knowledge which is abstract and far from practical application. The main contents include solar radiation and agriculture, soil temperature and air temperature, moisture in the atmosphere, air pressure and wind, weather system and weather process, climate and agricultural climate, agricultural microclimate and meteorological training guidance.

In order to enrich the teaching methods and improve the teaching effect, the teaching courseware of Agricultural Meteorology has been developed. The content includes meteorological observation, instrument principle, weather system, etc., and shows the real scene in the form of multimedia to make up for the deficiency of traditional teaching methods.

agrometeorology can be used as a book for students majoring in agriculture, forestry, animal husbandry and fishery in higher vocational colleges, secondary colleges of undergraduate colleges, adult education and five-year higher vocational colleges. It can also be used for reference by people in related industries. Overview

Section 1 Basic concepts of agrometeorology

I. Concepts of meteorology and its research fields

II. Concepts, tasks and research methods of agrometeorology

III. A brief history of agrometeorology development

Section 2 Composition and vertical structure of atmosphere

I. Composition and pollution of atmosphere

II. Vertical structure of atmosphere

The formation of day and night and four seasons

II. The number of sunshine hours and illumination time

III. The elevation angle and azimuth angle of the sun

IV. Seasons and agricultural production

Section II. Radiation and solar radiation

I. General knowledge of radiation

II. Solar radiation in the upper atmosphere

III. Attenuation of solar radiation in the atmosphere

Changes of solar radiation spectrum reaching the ground

III. Reflection and absorption of solar radiation on the ground

IV. Ground radiation, atmospheric radiation, ground effective radiation and ground radiation difference

Section IV. Solar radiation and agricultural production

I. Effects of solar radiation spectrum on plants

II. Illumination and crop growth

III. Illumination time and crop growth and development

. The utilization rate of light energy and the ways to improve it

A brief introduction to meteorological observation

Chapter II Soil temperature and air temperature

Section I Soil temperature

II Factors affecting soil temperature

III Effects of soil freezing and thawing on plants

Section II Air temperature

I Main heat sources and heat transfer in the atmosphere. Vertical distribution of air temperature

IV. Adiabatic change of air and atmospheric stability

Section III. Temperature and agricultural production

I. Basic temperature of plant life activities

II. Influence of periodic temperature change on plants

III. Agricultural boundary temperature

IV. Influence of soil temperature on plants

V. Accumulated temperature and its application in agricultural production

. Regulation measures of ambient temperature Training II Temperature observation

Chapter III Moisture in the atmosphere Section I Air humidity

I Expression method of air humidity

II Time variation of air humidity

II Evaporation, transpiration and evapotranspiration

I Water surface evaporation

II Soil evaporation

III Plant transpiration

IV. Conditions of water vapor condensation in the atmosphere

II. Water vapor condensation

III. Atmospheric precipitation

Section IV. Moisture and agriculture

I. Air humidity and crops

II. Precipitation and crops

III. Critical period and critical period of crop moisture

IV. Soil moisture status and its relationship with crops

V, Water use efficiency and ways to improve it

observation of air humidity in practice 3

observation of precipitation and evaporation in practice 4

Chapter 4 Air pressure and wind

Section 1 Air pressure and pressure field

I. Concept of air pressure

II. Variation of air pressure with height

III. Air pressure field

Section 2 Horizontal movement of air

I. Wind in the friction layer

Section III Atmospheric circulation

1. Basic factors for the formation of atmospheric circulation

2. Role of surface properties

Section IV Wind and agriculture

1. Wind can regulate farmland microclimate

2. Wind can spread pollen and seeds

3. Wind's harm to agriculture. 5. Observation of air pressure and wind

Air mass

II. Front

III. Cyclone

IV. Anti-cyclone

V. Warm high pressure, the main weather system affecting China

Section II. Introduction to weather forecast

I. Types of weather forecast

II. Weather forecast methods

Section III. Major agricultural disaster weather in China

Sandstorm

Chapter VI Climate and Agricultural Climate

Section I Factors of Climate Formation

1. Solar radiation

2. Atmospheric circulation

3. Properties of underlying surface

4. Human activities

Section II Climate zone and climate type

1. Climate zone

2. Basic features of climate in China

Section IV Agroclimatic Regionalization and Rational Utilization of Agroclimatic Resources

I. Agroclimatic Regionalization in China

II. Rational Utilization of Agroclimatic Resources

Training VI Statistics and Analysis of Agroclimatic Data

Chapter VII Agromicroclimate

Section I Physical Basis of Agromicroclimate Formation

I. Function Surface and Function Layer

Heat balance of action surface

IV. Turbulent flow exchange of action surface

V. Water balance of action surface

Section II. Characteristics of farmland microclimate

Section II. Microclimate effect of farmland cultivation and cultivation measures

Section III. Terrain microclimate

1. Slope microclimate

2. Valley microclimate

4. Microclimate in solar greenhouse

Section 5 Microclimate in shelterbelt

1. Windproof effect of shelterbelt

2. Improvement of temperature and humidity in field by shelterbelt

3. Effect of shelterbelt on preventing dry hot wind

Training 7. Observation of agricultural microclimate

Schedule 1 sunshine hours

Schedule 2 solar declination

Schedule 3 air relative humidity.