Causes of dry leaves and black spots The harm of dry leaves and black spots The prevention and control methods of dry leaves and black spots are a common problem among many flower lovers in the process of growing flowers. This not only affects the ornamental value of flowers, but also May pose a serious threat to the growth of flowers. This article will deeply analyze the causes, harms and prevention methods of dry leaves and black spots to help flower lovers solve this problem. Causes of dry and black spots 1. Pathogen infection: Pathogens are one of the main causes of dry and black spots of flowers and leaves. For example, pathogens such as fungi and bacteria invade flower leaves, causing yellowing, dryness, and black spots on the leaves.
2. Pests: Some pests, such as aphids, red spiders, etc., will absorb the juice of flower leaves, causing the leaves to wither and appear black spots.
3. Malnutrition: During the growth of flowers, if necessary nutrients, such as nitrogen, phosphorus, potassium, etc. are lacking, it will also lead to dryness of leaves and black spots.
4. Environmental factors: Environmental factors such as insufficient light, too high or too low temperature, and inappropriate air humidity can also cause dried leaves and black spots. Harm of dried leaves and black spots 1. Affects ornamental value: dried leaves and black spots cause flowers to lose their beautiful appearance and reduce their ornamental value.
2. Affect growth: Dry and black spots of flowers and leaves may cause slow growth or even death of flowers.
3. Spread of diseases: Dry and black spots of flowers and leaves may become a transmission route for bacteria, further harming other flowers. Prevention and control methods for dry and black spots of flowers and leaves 1. Clean flowers: Regularly clean the dust and dirt on the flower leaves and keep the leaves clean.
2. Reasonable fertilization: Reasonably apply nitrogen, phosphorus, potassium and other fertilizers according to the growth needs of flowers to avoid excessive fertilization.
3. Control pests: When pests are found, spray pesticides in time to prevent the spread of pests.
4. Moderate watering: Keep the soil moist, avoid stagnant water, and prevent root rot.
5. Adjust the light: Ensure that flowers receive sufficient light and avoid being in a dark environment for long periods of time.
6. Control environmental factors: Adjust environmental factors such as temperature and humidity according to the growth habits of flowers.
7. Spraying agent: For dry black spots of flowers and leaves, you can choose a fungicide to spray to kill bacteria.
Dry and black spots of flowers and leaves are common problems during the growth of flowers. Understanding their causes, hazards and prevention methods will help flower lovers better maintain flowers. In the actual maintenance process, we must pay attention to details and reasonably adjust maintenance measures to ensure that flowers grow healthily.
(Note: The content of this article is for reference only, and the specific prevention and control methods need to be adjusted according to actual conditions.)
References: 1."Flower Pest Control Technology", China Agricultural Press, 2018.
2."Flower Conservation and Management", China Forestry Press, 2017.
3."Diagnosis and Control of Flower Diseases", China Agricultural Press, 2019.