What are the requirements for the growth environment and temperature of chrysanthemum?

(1) Morphological characteristics and growth characteristics of chrysanthemum;

(1) Morphological characteristics of chrysanthemum: Chrysanthemum belongs to Compositae and is a perennial flower. There are six parts: root, stem, leaf, flower, fruit and seed, but there are many roots in the following year, which leads to malnutrition, thin branches and flower shape variation. Therefore, in order to ensure the excellent varieties of chrysanthemum, the method of asexual propagation is generally adopted. Chrysanthemum is an annual. Like other seed plants, but in the long-term cultivation process, after everyone's cultivation and improvement, it has its unique morphological characteristics.

① Chrysanthemum leaves: regular leaves, long leaves, round leaves, sunflower leaves, awned leaves, inverted leaves, stipe leaves and serrated leaves.

② Chrysanthemum pattern: flat, thick, spherical, round, casual, natural and open-minded.

(3) The fruit of chrysanthemum: Usually, the fruit will mature in February-March after the flowers are in full bloom, but the life span of the seeds after maturity is very short. Germination ability is generally only seven or eight months. Under special sealing conditions, the germination potential can reach four years. Chrysanthemum seeds have no dormancy period. As long as the temperature and humidity conditions for germination are reached, it can be planted and raised at any time.

(2) Growth characteristics of chrysanthemum:

Chrysanthemum morifolium is a highly hybrid cultivated by artificial cultivation for many years. Its parents are native to China and distributed all over the world.

Chrysanthemum is a short-day plant that likes cool and sunshine. Chrysanthemum sprouts in spring, grows nutritionally in summer, blooms in autumn and overwinters underground in winter. Chrysanthemum has strong adaptability, but due to different varieties of chrysanthemum, the requirements for its environmental conditions are also different. Therefore, in order to make the cultivated chrysanthemum open and achieve the purpose of cultivation, we must master the growth characteristics of chrysanthemum and create the necessary temperature, light, humidity, soil and fertilizer that are most suitable for the growth and development of chrysanthemum.

① Temperature: Chrysanthemum prefers a mild and cool climate and avoids hot summer weather. Its suitable temperature is between 65438 08℃ and 25℃, with a maximum of 30℃ and a minimum of 65438 00℃. Chrysanthemum is cold-tolerant, and most varieties in the underground part can tolerate the low temperature of -5℃- 10℃.

② Lighting: Chrysanthemum likes sunshine, and the place suitable for healthy growth of chrysanthemum should be well ventilated and well lit. However, in hot summer, if the sun is too strong, chrysanthemum should be shaded, and the shading degree should be below 5%, otherwise it will affect the photosynthesis of the plant and be unfavorable to its growth and development. The intensity of light will not only affect the growth of chrysanthemum, but also delay and advance the flowering period and color of chrysanthemum, shortening the flowering period and changing the color.

③ Moisture: Chrysanthemum is a shallow-rooted plant, which needs proper moisture during its growth. Chrysanthemum is drought tolerant, but too dry is not conducive to its growth. But it should not be too wet to avoid waterlogging and water accumulation, and drainage must be done well during the rainstorm season.

④ Soil: Soil is the foundation of chrysanthemum cultivation, so the quality of soil is the first level of chrysanthemum cultivation. First of all, we should choose soft and fertile sandy soil with high terrain, abundant sunshine, rich humus and good drainage, and turn it into acid.

⑤ Fertilizer: The growth and development of chrysanthemum is closely related to the rational use of fertilizer. The fertilizers that chrysanthemum needs are mainly nitrogen fertilizer, phosphorus, potassium and some trace elements. In the process of maintenance, nitrogen, phosphorus and potassium should be used reasonably to make it better.