It's more effective to apply fertilizer in this way. Don't say I didn't tell you.
The fertilization method of ground-planted roses is still very different from that of potted roses. The growth range of roses is limited, so fertilization is easier to control, while the roots of ground-planted roses can take root dozens of meters deep underground and radiate dozens of meters wide to the surroundings. More suitable methods can be used to improve the absorption rate of fertilizer.
Take a vine rose or shrub rose that has grown for two or three years, with branches growing four meters high and crown width of three meters as an example. If it is that granular nutrient solution, the general dosage is about 100 grams. Without an accurate scale, how could such an approximate value be estimated? It would be possible to use the amount of an adult's grasp.
It is best to do some preparatory work before fertilizing, such as shoveling up the top layer of soil within a meter or two around the plant and pushing it aside. The range of shoveling soil is centered on the plant, and the range can be determined according to the size of the plant. Generally, about two meters is a suitable range, at least not less than one meter.
After doing this step, grab the granular fertilizer in your hand and sprinkle a thin layer in this area, covering it evenly as much as possible, not sprinkling more than one piece of land and less than one piece of land. After the fertilizer is spread, the soil that was shoveled aside is again spread thinly over the fertilizer in the original area.
What are the benefits of covering fertilizer with a layer of soil rather than exposing fertilizer directly to the surface? Without this layer of soil cover, fertilizer is easily dried, and after rain or watering, the moisture in the surface layer of soil is also easy to evaporate, and the fertilizer that can penetrate into the soil with moisture is extremely limited, so a lot of fertilizer is actually wasted.
The fertilizer covered under the soil is not directly exposed to sunlight, and the soil under the surface contains more water, which can better dilute nutrients and greatly improve the utilization rate of fertilizer. With each watering, nutrients can seep down a little bit and continue to be transported to the roots.
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