2025年1月28日 · Gardeners and gardening articles often talk about NPK, which stands for nitrogen, phosphorus, and potassium. The initials N, P, and K are the chemical symbols for those elements on the periodic table (yes, potassium is represented by K.

Fertilizers are usually labeled with three numbers, as in 18-20-10, indicating the relative content of the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), respectively.

2024年7月1日 · The letters "NPK" on a fertilizer label stand for nitrogen, phosphorus, and potassium, the three primary nutrients plants need to grow. The numbers on the label indicate the ratio (by percentage) of nitrogen, phosphorus, and potassium in the fertilizer container.

These three numbers are what's called the fertilizer's N-P-K ratio. (Remember the periodic table from chemistry class? The letters are element symbols.) The ratio reflects the proportion of three plant nutrients, always in the same order: nitrogen (N), phosphorus (P) and potassium (K).

2024年5月23日 · Every fertilizer label will give information about its “N-P-K” content, the amount of nitrogen, phosphorus, and potassium (standardized in that order) in the particular fertilizer blend. This is expressed as a series of three numbers that give the percentage (also called “ratio” in this sense of the word) of each nutrient by weight.

2023年7月28日 · These fertilizer numbers, also referred to as NPK values, should appear on any fertilizer you purchase, whether it is an organic fertilizer or a chemical fertilizer. The NPK numbers on fertilizer are a way to provide the nutrients that may be missing in your garden soil, which is why the soil test is important as a first step.

What insight do these symbols and numbers give the gardener and why is this ratio important? In the gardening world, nitrogen, phosphorous, and potassium (N-P-K) are known as primary or macronutrients, because they are required in larger quantities than other elements for plant growth and survival.

To botanists and gardeners, N, P, and K are known as "macronutrients," the most important elements to plants and therefore key ingredients in fertilizers. The N-P-K ratio listed on fertilizer packages defines the relative amounts of each nutrient.

2021年5月18日 · NPK stands for Nitrogen, Phosphorus and Potassium (K in the periodic table). These are essential for every plant to have a steady, healthy growth. It's usually found in fertilisers, described with the following format: NPK 1-7-11.

2015年9月8日 · The letters are the chemical symbols for the three major components of NPK mineral fertilizers (compound fertilizers, complete fertilizers): „N“ is the chemical symbol for nitrogen. Nitrogen takes on an array of different functions in the plant and is …