Is it better to use water-soluble fertilizers or compound fertilizers for fruit trees?
For most women, let's take a look at the content about whether it is better to use water-soluble fertilizers or compound fertilizers for green plants and flowers!
Is it better to use water-soluble fertilizers or compound fertilizers for fruit trees?
Fruit trees can do without top-dressing with compound fertilizers when using water-soluble fertilizers normally. This is because water-soluble fertilizers should be used alone or mixed with non-alkaline pesticides to avoid the reaction between metal ions and precipitation, which can cause leaf damage or phytotoxicity. It is a fast-acting fertilizer with good water solubility and no residue, completely dissolvable in water, and can be directly absorbed and utilized by the roots and leaves of the crops.
I grow apples, and regarding whether it is better to use large chemical fertilizers or water-soluble fertilizers for fruit trees, I think both have their advantages and disadvantages. It is necessary to choose according to the different fertilizer requirements of fruit trees at different stages. Let me share my views.
Differences between large chemical fertilizers and water-soluble fertilizers
Usually, we refer to various chemical fertilizers as large chemical fertilizers, such as urea, diammonium, and various compound fertilizers.
Water-soluble fertilizers, as defined, are fertilizers that can be completely dissolved in water. I will not go into the specific concepts and classifications of each, and will only talk about their differences here.
In fact, the elements contained in large chemical fertilizers and water-soluble fertilizers are almost the same. It's not that large chemical fertilizers contain elements that water-soluble fertilizers don't have, or vice versa. Their main difference lies in their fast-acting and lasting effects.
Relatively speaking, large chemical fertilizers have a slightly lower fast-acting effect than water-soluble fertilizers, but a better lasting effect.
How to choose between large chemical fertilizers or water-soluble fertilizers
Fruit trees have different fertilizer requirements at different growth stages, and the fertilization method is not constant. It is not possible to generalize whether large chemical fertilizers or water-soluble fertilizers are better and decisions should be based on the specific situation of the fruit trees.
Taking apple trees as an example, now that the apples are about to be bagged, many fruit farmers will top-dress the apple trees before bagging. At this time, because there is a stage of spring shoot stopping and bud differentiation in the later period, water and fertilizer control is required.
Therefore, not only should fertilization be done early, but also the fast-acting effect should be good, not requiring a long-lasting effect, and even a shorter-lasting effect is preferred. In this case, water-soluble fertilizers are the best choice.
When applying base fertilizers in autumn, the chemical fertilizers used together with organic fertilizers should have a longer-lasting effect, and there is not much requirement for the fast-acting effect. At this time, choosing large chemical fertilizers is more appropriate.
When choosing between large chemical fertilizers and water-soluble fertilizers, it should be tailored to the specific tree. It should be noted that water-soluble fertilizers are different from what people commonly call "drip fertilizers," and special attention should be paid to distinguishing between true and false when purchasing water-soluble fertilizers.
Can compound fertilizers be dissolved in water and used to water fruit trees?
Compound fertilizers can be diluted in water and then used for irrigation, but should not be poured on the leaves of plants to avoid burns. Compound fertilizers are divided into three types of concentrations: high, medium, and low.
For example, with compound fertilizers containing 15-16% nitrogen, phosphorus, and potassium, when used on fruit trees, 1 gram of compound fertilizer can be diluted in 100 milliliters of water; when used on vegetables, 1 gram of compound fertilizer can be diluted in 200 milliliters of water.
The above is a detailed explanation of whether it is better to use water-soluble fertilizers or compound fertilizers for fruit trees, for reference and suggestion only!