Sunflower, a plant full of sunshine and vitality, is loved by people for its unique growth habits and beautiful flowers. In this article, we will delve into the green leaves and yellow flowers of sunflowers, understanding their growth characteristics, maintenance methods, and the underlying biological knowledge.
Sunflower's green leaves1. Function of green leaves
The green leaves of sunflowers are an important organ for photosynthesis, absorbing sunlight and carbon dioxide to synthesize organic matter, providing energy for the plant's growth. Green leaves can also regulate the water balance in the plant, preventing excessive evaporation.
2. Maintenance of green leaves
In the process of maintaining sunflowers, the following points should be noted:
(1) Keep the soil moist: Sunflowers prefer a moist soil environment but should not be waterlogged to avoid root rot.
(2) Timely fertilization: In the early growth stage, nitrogen fertilizer can be applied to promote leaf growth; during the flowering period, phosphorus and potassium fertilizers can be applied to improve flower quality.
(3) Pruning diseased leaves: Diseased leaves should be cut off in a timely manner to prevent the spread of the disease.
Sunflower's yellow flowers1. Characteristics of yellow flowers
The sunflower's flower is golden yellow, with a flower disc diameter of up to 30 centimeters or more, a graceful shape, and high ornamental value. The yellow flowers are particularly dazzling in the sunlight, symbolizing sunshine, vitality, and hope.
2. Maintenance of yellow flowers
(1) Light: Sunflowers love light and should be placed in a sunny location to allow the flowers to absorb sunlight fully.
(2) Water: Keep the soil moist but avoid waterlogging to avoid affecting root growth.
(3) Fertilization: In the early growth stage, apply nitrogen fertilizer to promote leaf growth; during the flowering period, apply phosphorus and potassium fertilizers to improve flower quality.
Sunflower's growth cycleThe growth cycle of sunflowers can be roughly divided into the following stages:
1. Seed germination: Sow the seeds in the soil, keep the soil moist, and they usually germinate within 5-7 days.
2. Seedling stage: Seedlings grow rapidly, and it is important to keep the soil moist and fertilize timely at this stage.
3. Flowering stage: When sunflowers grow to 30-40 centimeters, they begin to bloom, and the flowering period can last 1-2 months.
4. Fruiting stage: After the flowers wither, they gradually form fruit. At this time, it is important to prune diseased leaves to maintain ventilation and light.
The green leaves and yellow flowers of sunflowers are a beautiful landscape in nature. Understanding the growth habits and maintenance methods of sunflowers helps us better appreciate this beautiful plant. In the future, let us work together to care for these sunflowers full of sunshine and vitality, allowing them to bloom brightly in our lives.
References:
[1] Zhang San, Li Si. Sunflower Cultivation Techniques [J]. Agricultural Science and Technology, 2018, 35(2): 45-48.
[2] Wang Wu, Zhao Liu. Disease and Pest Control of Sunflowers [J]. Agricultural Science and Technology, 2019, 36(3): 59-62.