Derong: vegetable planting and fertilization, skills are very important!

Foliar fertilizer is often used in the process of vegetable management, and in many cases, the effect of foliar supplement is the best. In the eyes of many vegetable farmers, foliar fertilizer is a means of foliar supplement, so there is no need for strict methods for vegetables to use foliar fertilizer. Vegetable medical network experts do not agree with this view, and the use of foliar fertilizer should also pay attention to certain rules. Not to spray casually, here, the author will explain several key points of the use of foliar fertilizer for vegetables as follows.

1. Foliar fertilizer can be mixed, but not too much.

It is often seen that when some vegetable farmers use foliar fertilizer, they mix three or four kinds at once, and the nutrition is repeated, according to the vegetable farmers themselves, this can make the plants absorb more nutrients. Vegetable medical network experts believe that this statement is wrong, foliar fertilizer should be selectively supplemented according to the growth of vegetables, otherwise some kind of excess nutrition will cause leaf burns and other side effects.

For example, some conditioner foliar fertilizers can promote plant growth at normal concentrations, but if the concentration is increased, they will play a role in controlling growth; another situation is that nutrient elements can antagonize absorption. for example, when potassium dihydrogen phosphate and calcium fertilizer are mixed, potash fertilizer and calcium fertilizer are mutually exclusive and absorbed.

In general, the author suggests that when you choose foliar fertilizer, when you need to supplement some nutrients, you only need a kind of high-quality foliar fertilizer.

2. Foliar fertilizers with different mechanisms were selected according to plant growth.

The type of foliar fertilizer should be selected according to the plant growth, demand and the characteristics of foliar fertilizer, whether it needs some kind of nutrition or regulation, which can not be used easily.

3. Foliar fertilizer can also be mixed reasonably.

Foliar fertilizer can also be reasonably compounded, but not more than three at most. The purpose of compounding is to better promote the absorption of nutrients, regulate plant growth and balance the supply of nutrients.

For example, when supplementing calcium fertilizer, it is usually necessary to supplement calcium and boron; while replenishing plant nutrition, you can compound conditioner foliar fertilizer with a two-pronged approach.

4. Under specific circumstances, vegetables need to be replenished with foliar fertilizer.

If the root system of the plant is underdeveloped and necrosis occurs inside the stem, it is necessary to supplement foliar nutrition if you want to promote fruit growth; for vegetables to supplement trace elements, foliar spraying is the best and the method is the simplest; the soil moisture is too high. Can not rush to supplement nutrition, can be used foliar supplement, and so on.

Finally, I would like to remind you that when you do not fully understand the pH and composition of foliar fertilizer, try not to mix it with copper preparations and insecticides. of course, it is best if you can be mixed with copper preparations and pesticides after full understanding.