How should I fertilize the crops? Remember, don't touch these 15 minefields!

At present, there are many problems in farming and fertilizing crops, and it is easy to appear the phenomenon of improper fertilization. How to apply fertilizer in order to avoid poor fertilizer efficiency, slow effect, and even the possibility of no harvest? Be careful not to touch the following 15 minefields, so that the fertilizer you use can really turn into a bumper harvest!

1. When fertilizing, "close to the stem of the plant, fertilizer" is easy to be absorbed.

This is a common phenomenon in rural areas, and this kind of fertilization method has great harm. Because the part of the plant absorbing nutrients is in the root hair area, the plant stem and root (except the root hair area) absorb little or no nutrients, the fertilizer is close to the stem of the plant (except at the seedling stage), and the fertilizer is far away from the nutrient absorption part of the plant. therefore, it is not easy to be absorbed, if the fertilization is too much and the concentration is too high, it is easy to "burn seedlings". Therefore, the fertilization location should be determined according to the aboveground growth of the plant and the root growth of the underground part to ensure the effect of fertilization.

two。 After the crop is short of fertilizer, apply fertilizer again.

After fertilizer is applied, it takes 3-5 days for paddy field to be absorbed by crops, and it takes 5-7 days for dry land to be absorbed and utilized. Therefore, fertilization after crop fertilizer deficiency occurs will result in longer time of fertilizer deficiency and yield reduction. Therefore, fertilization should be carried out according to the fertilizer demand characteristics of crops, 5-7 days in paddy field and 8-10 days in dry land. At the same time, the nutrient uptake of crops is also related to light, temperature, water, fertilization methods (such as dry application, leaching, extra-root topdressing, etc.). Strong light, high temperature and sufficient water accelerate the absorption of crop nutrients, on the contrary, the absorption slows down. Extra-root topdressing takes effect quickly and can be applied late because nutrients are directly absorbed by leaves, but the concentration should be low to prevent damage to leaves. Drenching application can make fertilizer directly into the root of the plant, the effect is faster, it can also be applied appropriately late, dry fertilizer is slow, and should be applied early.

3. As long as the crops grow well, high yields can be obtained.

The growth of crops includes two stages: vegetative growth and reproductive growth (except leafy vegetables and succulent crops). The application of sufficient nitrogen fertilizer in the early growth stage can promote vegetative growth, but if nitrogen fertilizer is applied in the reproductive growth period, it will cause greenness of crops, affect reproductive growth, hinder the transformation of nutrients, and reduce yield and quality. Therefore, fertilization should be carried out according to crop growth, mainly nitrogen fertilizer in the early stage to promote vegetative growth, and combined application of nitrogen, phosphorus, potassium and calcium in the middle and later stage to promote reproductive growth and increase yield.

4. As long as enough fertilizer is applied, high yield can be obtained.

The type and quantity of nutrients required by all kinds of crops are different in the whole growth period and different growth stages. If fertilization is not carried out according to the fertilizer demand characteristics of crops, on the one hand, it will lead to the decrease of element deficiency, stress resistance and disease resistance of crops, resulting in a decrease in yield and quality; second, the residual or loss of nutrients that some crops require little or no absorption, resulting in a waste of fertilizer. Therefore, the type and quantity of fertilization should be determined according to the growth characteristics of the plant, and the fertilizer effect should be brought into full play.

5. As long as fertilizer is applied, it will have a fertilizer effect.

The fertilizer efficiency of fertilization is related to soil characteristics, crop nutrient absorption characteristics, fertilizer nutrient release characteristics, water, air, heat and many other conditions, if the effects of various factors are not fully considered, it is very easy to cause nutrient loss, fertilizer deficiency and other phenomena. The fertilizer effect of sandy soil is fast, but the loss is also fast, so it should be carried out according to the principle of less application and multiple application, while the fertilizer effect of clay loam soil is slow, and sufficient base fertilizer should be applied early. Potash fertilizer is easy to dissolve, but the loss is fast, so it should be fertilized in time according to the characteristics of potassium demand of crops, organic fertilizer and phosphate fertilizer are slow, the loss is less, should be applied early, ammonium bicarbonate is highly volatile, and can be fertilized with organic fertilizer or phosphate fertilizer for 1-2 days, which can reduce the loss of nutrients.

6. Only pay attention to the amount of fertilizer, not the content of nutrients.

At present, some compound fertilizers on the market are widely used in rural areas because of their low prices. It is common in these compound fertilizers that the content of effective components is low or the content of some elements in the three major elements is very low or not at all, but farmers do not pay enough attention to these conditions and continue the fertilization habit of high content compound fertilizer. as a result, the application of nitrogen, phosphorus and potassium is insufficient, resulting in the occurrence of crop fertilizer deficiency and element deficiency, affecting yield and quality. Therefore, when using these compound fertilizers, we should fully understand the contents of nitrogen, phosphorus and potassium in these compound fertilizers, and according to the fertilizer demand characteristics of various crops, apply Jiamei Yinglai, Nekalide, brain Platinum and Gold Point to ensure the normal growth of crops.

7. The fertilizer is more, the benefit is high

According to the principle of diminishing returns, when fertilization reaches a certain amount, the input-output ratio decreases and the benefit decreases. If too much fertilizer is applied, the yield will be reduced. Therefore, according to the characteristics of fertilizer demand, soil fertility and planting density of crops during the whole growth period, the best fertilization scheme should be found according to the principle of sufficient supply but not waste, so as to give full play to fertilizer efficiency and increase economic benefits.

8. Only pay attention to the application of a large number of elements, not the application of trace elements

A large number of elements are the basic elements for the growth of crops, but some crops require more trace elements during the whole growth period or a long period of a certain life, or lack of trace elements in the soil, if trace elements are not added, it will cause plant deformities, falling flowers and fruits, product yield and quality decline and so on. Therefore, while applying a large amount of elements such as nitrogen, phosphorus and potassium, it is necessary to apply a variety of trace elements such as iron, manganese, zinc and boron according to the fertilizer requirements of crops and the composition of soil nutrients, so as to ensure the normal growth of crops.

9. Only apply base fertilizer, not top dressing

Nowadays, many users are afraid of trouble. after applying base fertilizer, they will no longer apply fertilizer, this method of fertilization is unscientific. Crops have less demand for nutrients in the early stage, and the application of sufficient base fertilizer can indeed ensure the nutrient demand of crops for a long time, but even some fertilizers with sufficient stamina have a limited duration of fertilizer effect. especially for the soil with poor fertilizer and water conservation capacity, not topdressing in time is more likely to cause the phenomenon of de-fertilization. Therefore, the crops with a growth period of more than 2 months should be properly applied with Jiamei Jinli, profitable Lai and Nekalide to ensure the nutrient demand of crops in the peak growth period.

10. Fertilization by looking at flowers in fruit trees

More flowers and less flowers of fruit trees largely depends on the tree potential. In order to make fruit trees differentiate more flower buds and set more fruits in the second year, sufficient fertilizer should be applied in the previous year, especially fertilization after fruit is very important, because fruit trees are greatly damaged after fruit picking. At this time, we should replenish nutrients in time, restore the vitality of the fruit trees, enhance the resistance of the fruit trees, and ensure the production capacity of the fruit trees in the second year. Some people like to apply winter fertilizer, which is useful, but it is not the best time, because the most important part of the fruit tree to absorb nutrients is in the root. At the beginning of winter, the root system of the tree is almost dormant, and the ability to absorb nutrients is very weak. The best time for fruit trees to apply fertilizer is after picking fruit and before falling leaves. The most direct result of flower fertilization is the obvious age phenomenon of fruit trees.

11. The same formula, the same dosage, the same effect.

The reason is very simple, the main difference between fat people and thin people is not the problem of eating more or less, but the problem of absorbing more and less. The same goes for fertilizers, the same formula and the same amount of fertilizer has a significant difference in nutrient use efficiency due to the product itself, which is why some fertilizers with 40% of total nutrients are better than those with 45% nutrients.

twelve。 High price = high cost

Because fertilizer belongs to the category of means of production and non-direct consumer goods, the basis for analyzing the cost is not the price but the input-output ratio. In the case of the same amount or input, which kind of product brings high benefit and high output? the cost of which product is low.

13. After using compound fertilizer, other fertilizers will not be used.

Some users think that after applying compound fertilizer, there is no need to apply other chemical fertilizers, which is wrong. General compound fertilizers generally contain only nitrogen, phosphorus and potassium, and a small number of varieties contain zinc and boron. If we do not pay attention to the timely supplement of effective medium and micronutrient elements, it will also have an impact on crop yield.

14. Topdressing and partial application of nitrogen fertilizer

Many users prefer to apply ammonium bicarbonate, urea and other nitrogen fertilizer when topdressing, although this will have an obvious effect on the growth of crops, it can not increase the yield of users, because nitrogen is very important for the early growth of crops. however, with the growth of crops, the demand for phosphorus and potassium micro-fertilizer is getting higher and higher, but the need for nitrogen is reduced, and partial application of nitrogen fertilizer will only make crops grow. Therefore, in order to ensure the effect of increasing production, attention should be paid to the application of set nutrition series fertilizer Jiamei profitably and Nei potassium de.

15. If the output doesn't go up, the fertilizer is not good.

A small number of users think that the increase in yield is the reason for fertilizer. in fact, there are many reasons for it, such as weather, soil quality, fertilization methods, formula selection of fertilizer products, seeds, pesticides, field management, and so on. Fertilizer is only one of the factors.