What are the fertilization methods for pollution-free vegetables?

With the improvement of living standards, people are becoming more and more particular about what they eat, and green pollution-free foods are increasingly recognized and accepted by consumers. Vegetables are an indispensable food in our lives, and now more and more growers are starting to shift to pollution-free vegetable cultivation. So what are pollution-free vegetables? What are the specific fertilization methods?

1. What are pollution-free vegetables?

Pollution-free vegetables refer to vegetables in which the content of harmful substances such as pesticide residues, nitrites and heavy metals is within the range stipulated by the state, vegetables that people can eat with confidence, and vegetables that will not affect human health when eaten.

The quality of pollution-free vegetables is very good. Not only do they grow well, but the finished products they produce taste great and are not attacked by pests.

2. What are the fertilization methods for pollution-free vegetables?

1. Fertilize according to the vegetable variety

Because there are very many vegetable varieties, the fertilizers needed by different varieties also differ somewhat. For example, for leafy vegetables, if you want the leaves to look tender green and glossy, applying nitrogen fertilizer generally gives a relatively good effect. For melon and fruit vegetables, organic fertilizer is the main thing, combined with nitrogen, phosphorus and potassium fertilizers. For legume vegetables, since they can generally fix nitrogen through their roots, only a small amount of nitrogen fertilizer is needed.

In addition to the vegetable variety, the amount of fertilizer applied also needs to be decided according to the vegetable's growth cycle. For example, during the fruit-swelling period, the demand for fertilizer is relatively high. Vegetables such as cabbage generally value organic fertilizer, and when they enter the head-forming period they also need additional topdressing, so that the heads can be promoted to be firm and enlarged.

2. Fertilize according to weather factors

Fertilization depends not only on the vegetable variety and growth period, but also on weather factors, such as temperature changes, the amount of rainfall, the amount of sunlight, and so on. When the temperature is relatively high, vegetables grow relatively luxuriantly, so the fertilizer demand is also relatively large; therefore, more fertilizer can be applied during this period, and when the temperature is relatively low, less fertilizer can be applied or none at all.

When the soil is lacking in moisture, even if fertilizer is applied, not much of the fertility is converted. If there is too much rainfall, it will also cause soil fertility to be lost. When there is sufficient sunlight, the photosynthesis of vegetables is relatively good, and at this time more fertilizer is needed. Therefore, it can be concluded that the fertilization effect is relatively good when the light conditions are good and the soil moisture is moderate.

3. Fertilize according to the characteristics of the fertilizer

There are relatively many types of fertilizers used during vegetable growth, and each has its own characteristics. Usually, not only organic fertilizer but also inorganic fertilizer should be used. For base fertilizer, organic fertilizer can be chosen, and for topdressing, inorganic fertilizer can be chosen, so that they can coordinate well and play the greatest role.