The growth period and flowering period of flowers are different. Both have a slightly different concept.
(1) Flower growth period: generally refers to the time a plant takes from sowing (transplanting) to seed maturity. Expressed in number of days required. The entire flower growth period can be divided into: the vegetative growth period, which mainly concerns the growth of vegetative organs such as roots, stems and leaves, and the reproductive growth period, which mainly concerns the differentiation and the formation of the reproductive organs. organs such as flowers, fruits and seeds.
(2) Flowering time: Usually refers to the season or month when plants flower each year. For example: camellias, plum blossoms, crab claw lilies, spring cuckoos, freesias, calla lilies, cyclamens and spring orchids bloom in February.
Flower growth period: That is, the time it takes for a plant to mature from sowing to maturity. Unit: day.
[Flowering period]: When all parts of the flower are mature, it is a period of time from when the flower opens to the female and stamens are exposed from the perianth until pollination and fertilization are complete and the flower withers. The length of the flowering period varies greatly from flower to flower. The flowering period requires appropriate temperature and sufficient sunshine, such as low temperature and rain, which will affect flowering, pollination and fertilization, leading to flower dropping, fruit falling and empty grains. Generally, the flowering period of cereals is short, only 3 to 10 days, and that of legumes is longer.long, around 10 to 30 days.
For example: plants that bloom in January include nandina, plum blossom, poinsettia, clivia, narcissus, wintersweet, freesia, calla lily, cyclamen, primrose, cineraria, four-season crabapple, etc.
[Plant Growth Period]: The time required for the entire process of growth and development of a plant, from sowing and emergence to mature harvest. The length of a plant's growing period, in addition to being primarily determined by its genetics, also differs from factors such as climatic conditions and growing techniques in the growing area. For example, plants sown in fall and winter will grow slowly and have a long growing period due to low winter temperatures. Plants sown in spring and summer grow quickly and have a short growing period in raiswe have high temperatures. If the same variety is planted in different latitudes, the growing period will also change due to differences in temperature and light.
(1) The growth period of cotton
The life of cotton begins with seed germination and ends with seed formation. Generally, the number of days required from sowing to harvest of cotton is called the field growing period, or full growing period. The number of days required for cotton to germinate from cotton seedlings is called growing period. The length of the growing period provides the main basis for identifying the attributes of cotton varieties. Generally, cotton varieties with a growing period of less than 120 days are called early maturing varieties, those with a growing period of 120 to 140 days are called medium maturing varieties, and those with a periode of growth of more than 140 days are called medium-ripening varieties. called late varieties.
(2) The growth period of cotton
The entire growth period of cotton is divided into four main growth periods according to the order and morphological characteristics of each organ. The growth period of cotton is often used as the basic element recorded in experimental surveys, reflecting the speed and degree of cotton growth. Each period has corresponding basic standards.
1. Emergence Period
After the cotton plants are dug up, the two cotyledons spread out to indicate the date when 50% of the plants emerge in the entire field (area). is the emergence stage.
2. Budburst period
Budburst occurs when young buds with a diameter of 3 mm appear on the first fruit branch of the cotton plant. plants throughoutfield (area) are budding. The date when the fourth fruiting branch appears on all cotton plants is the peak budding stage.
3. Flowering stage
The flowering stage corresponds to the opening of the first floral corolla of the cotton plant. The flowering stage is when 50% of the cotton plants in the entire field (area) have opened. ) have the first flower. The date when the fourth fruit of all cotton plants blooms is the peak flowering period.
4. The Lint Bursting Stage
The lint bursting stage occurs when the shell of the first cotton boll normally cracks and lint appears. this is when 50% of the cotton plants in the field (area) show a burst of lint.
(3) Growth stages of cotton
Due to cultivation and management needs, the time between the previous growth period and the next growth period of the cottonoton is usually divided into a single growth. scene. The life of cotton is divided into five growth stages, namely sowing and emergence stage, seedling stage, budding stage, flowering stage and cultivation stage. In production, field management is generally carried out according to the growth and development characteristics of each growth stage. The time spent in each growth stage is closely related to the maturity of the variety, climatic characteristics and growing conditions.
The above represents relevant knowledge about cotton growth period and cotton growth period, for reference only.