Seedlings are an important part of landscape greening, and their growth condition directly affects the aesthetics of the landscape and the improvement of the ecological environment. Fertilization is an indispensable part of seedling maintenance, and proper fertilization methods can promote seedling growth, improve the survival rate and ornamental value of seedlings. This article will introduce in detail the fertilization methods for field-grown seedlings to help seedling growers fertilize scientifically and promote the healthy growth of seedlings.
Principles of Fertilization for Field-Grown Seedlings1. Adjust according to local conditions: Develop a reasonable fertilization plan based on factors such as seedling type, growth stage, and soil fertility.
2. Staged fertilization: Divide the entire growth cycle into different fertilization stages according to the growth characteristics of seedlings to ensure adequate nutrition at different growth stages.
3. Moderate fertilization: Follow the principle of "less is better than more" to avoid excessive fertilization that can lead to poor seedling growth.
4. Combine organic and inorganic fertilizers: Organic and inorganic fertilizers each have their advantages, and a reasonable combination of the two can improve fertilizer utilization.
Methods of Fertilization for Field-Grown Seedlings1. Base fertilizer
Base fertilizer refers to the fertilizer applied to the soil before seedling planting, mainly providing the necessary nutrients for the initial growth of seedlings. Types of base fertilizers include organic fertilizers, inorganic fertilizers, and compound fertilizers.
(1) Organic fertilizers: Such as chicken manure, cow dung, pig manure, etc., rich in organic matter and various trace elements, beneficial for improving soil structure and soil fertility.
(2) Inorganic fertilizers: Such as ammonium sulfate, superphosphate, potassium chloride, etc., providing the necessary nitrogen, phosphorus, potassium, and other nutrients for seedling growth.
(3) Compound fertilizers: Mix organic and inorganic fertilizers in a certain proportion to provide nutrition and improve the soil.
2. Top dressing
Top dressing refers to the application of fertilizer during the growth of seedlings, based on their growth needs and changes in soil fertility.
(1) Nitrogen fertilizers: Nitrogen fertilizers can promote the growth of seedling branches and leaves, improving the ornamental value of seedlings. Common nitrogen fertilizers include urea, ammonium sulfate, etc.
(2) Phosphorus fertilizers: Phosphorus fertilizers can promote the development of seedling roots and improve the resistance of seedlings. Common phosphorus fertilizers include superphosphate, diammonium phosphate, etc.
(3) Potassium fertilizers: Potassium fertilizers can enhance the disease resistance and cold resistance of seedlings, improving the ornamental value of seedlings. Common potassium fertilizers include sulfate potassium, potassium chloride, etc.
3. Foliar fertilization
Foliar fertilization refers to the direct spraying of fertilizer on the leaves of seedlings, absorbing nutrients through the leaves. Foliar fertilization has the characteristics of quick effect and high utilization rate.
(1) Spraying time: During the vigorous growth period of seedlings, such as the spring germination period, the summer vigorous growth period, etc.
(2) Spraying method: Dilute the fertilizer to the appropriate concentration and spray evenly on the leaves of the seedlings.
Precautions for Fertilizing Field-Grown Seedlings1. Timing of fertilization: Choose the appropriate timing for fertilization based on the growth characteristics of seedlings and climatic conditions.
2. Amount of fertilization: Reasonably control the amount of fertilization based on soil fertility, seedling growth needs, and type of fertilizer.
3. Method of fertilization: Choose the appropriate fertilization method based on the type of fertilizer and the growth characteristics of seedlings.
4. Prevent fertilizer burn: After fertilization, water in time to avoid fertilizer concentration that can cause seedling burn.
5. Observe the growth of seedlings: After fertilization, closely monitor the growth of seedlings and adjust the fertilization strategy in a timely manner.
Fertilization of field-grown seedlings is an important part of seedling maintenance. Proper fertilization methods can promote seedling growth, improve the survival rate and ornamental value of seedlings. Seedling growers should fertilize scientifically based on the growth characteristics of seedlings and soil fertility to promote the healthy growth of seedlings.