Observation and Recording Experiments on Plant Waiting Periods
Source: Experiments in Botany
Operation method
basic program
Principle
Plant phenology is the science of studying the relationship between plants in nature and the cyclical changes in environmental conditions (climate, hydrology, soil conditions). Plant phenology is the study of the effects of climate change and seasonal changes on plant growth and development by observing the changes of the four seasons of spring, summer, fall and winter in a year at an observation point or station (in each place and each region) and by recording the germination, growth, and withering conditions of plants in a year, so that the influence of climate change and seasonal changes on the development of plant growth can be understood. Regular The factors affecting plant climate change are numerous, mainly biological factors and environmental factors, the former are intrinsic factors, including species and variety types, physiological control, etc.; the latter are extrinsic factors, including temperature, light, water and growth regulators, etc., of which temperature, light and water are the main influence factors. Changes in phenology are the result of the combined influence of meteorological factors, natural geographic conditions and ecological environment, and are a comprehensive manifestation of various factors. Therefore, the observation and study of phenology is very meaningful in arranging agricultural time, detecting environmental forecasts and domesticating atmospheric introductions, etc., and its purpose is to recognize the laws of the relationship between plants and natural seasonal phenomena, so as to serve the agricultural production and scientific research.
Materials and Instruments
Plants Move 1 According to the local environmental conditions, select plants suitable for growing and distributing widely, including woody and herbaceous plants, annuals and perennials for fixed-plant and timed observation. Fixed-plant observation; i.e., after selecting a certain plant, the plant should be observed continuously for a long period of time In order to ensure the reliability of the experimental results, more than 5 plants from different locations or habitats should be selected for each plant, and the observations should be recorded at the same time. Timed observation: This refers to the continuous observation of plants for one year after selection (the time can be adjusted from the fall of one year to the summer of the next year), and the number of observations can be changed according to different growing seasons. The number of observations can be varied according to the growing season. Generally, the plants are observed every 1-3 persons in the spring and summer when the climate changes are rapid, and once a week in other seasons. Compare the climatic periods of plants of the same species or different species in the same habitat, and analyze the effects of temperature, habitat, humidity or light on the climatic period of plants. 2 Content of observation records (1) Wooden plants: emergence (bud expansion, bud opening), leaf development (leaf development, leaf development), flowering (inflorescence or flower buds), and the period of flowering (inflorescence or flower buds). Flowering period (the emergence of inflorescences or flower buds, the beginning of flowering, the blooming period, the end of flowering, the second blooming period), the ripening period (the fruit formation period, the fruit ripening period, the beginning of the fruit shedding period, the end of the fruit shedding period) Leaf fall discoloration period (the beginning of the leaf discoloration period, the period of all the leaves discoloration period), and the deciduous period (the beginning of the leaf deciduous period, the end of the leaf branding period). (2) Herbs: Emergence, leaf development, flower sequence or bud emergence, flowering, fruit or seed maturity, fruit abscission, seed dispersal, second flowering, yellowing and dying. (3) Crop observation records pay attention to: sowing, seedling emergence, third, leaf emergence, tillering, nodulation, buds (tasseling), flowering and fruiting, and maturity (harvest). And cooperate with the record of field management measures. 3 With observation records Environmental meteorological conditions: wind, rain, thunder, electricity; temperature; light; frost, freezing, snow, etc., the beginning and end of the period. For more product details, please visit Aladdin Scientific website.
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