What is the way to use fertilizer for pollution-free vegetables?

With the improvement of living standards, people pay more and more attention to eating, and green pollution-free food is more and more recognized and accepted by consumers. Vegetables are an inseparable food in our lives. Now more and more growers begin to transform themselves into pollution-free vegetables. What are pollution-free vegetables? What is the specific way of using fertilizer?

What are pollution-free vegetables?

Pollution-free vegetables refers to the content of pesticide residues, nitrite, heavy metals and other harmful substances in vegetables within the range of national regulations, people can rest assured to eat vegetables, eat vegetables that will not affect human health.

The quality of pollution-free vegetables is very good, not only the growth and development is good, but also the finished product tastes good and there are no insect pests.

Second, what is the way of fertilizing pollution-free vegetables?

1. Fertilize according to the variety of vegetables

Because there are so many varieties of vegetables, different varieties need different fertilizers. For example, eating vegetables with leaves that need to look green and shiny is generally better if nitrogen fertilizer is applied. If it is melon and fruit vegetables, organic fertilizer is the main, combined with nitrogen, phosphorus and potassium fertilizer. Legume vegetables can generally fix nitrogen according to the roots, so only a small amount of nitrogen fertilizer is needed.

In addition to the variety of vegetables, the amount of fertilizer application needs to be determined according to the growth cycle of vegetables. For example, the pursuit of fertilizer during the fruit expansion period is more, such as cabbage vegetables generally attach importance to organic fertilizer, into the heart period also need additional topdressing, so as to promote its package compactness and expansion.

2. Apply fertilizer according to weather factors.

Fertilization depends not only on vegetable varieties and growth periods, but also on weather factors, such as yellowing temperature, precipitation, light and so on. When the temperature is relatively high, vegetables grow more luxuriantly, so they need more fertilizer, so more fertilizer can be applied during this period, and less or no fertilizer can be applied when the temperature is relatively low.

When there is a lack of water in the soil, even if fertilized, the transformation of fertility is not much. If there is too much precipitation, it will also cause the loss of soil fertility. When there is enough light, the photosynthesis of vegetables is better, and more fertilizer is needed at this time. Therefore, it can be concluded that the effect of fertilization is better under the condition of good light conditions and moderate soil wettability.

3. Fertilizing according to the characteristics of fertilizer

There are many kinds of fertilizers used in the process of vegetable growth, each of which has its own characteristics. Usually, not only organic fertilizer but also inorganic fertilizer should be used. Base fertilizer can choose organic fertilizer, topdressing can choose inorganic fertilizer, so that it can be well coordinated and play the greatest role.