In daily life, we can always hear the word "g", I did not expect that fertilizer can be used to describe this word. There is a subtle relationship between the fertilizers and the fertilizers have a great effect on the soil. For example, if the phosphorus fertilizer is applied more, it will cause the lack of zinc in the soil. So how to apply fertilization correctly? Before understanding the scientific fertilization, Xiao Bian suggested that you still understand the relationship between the fertilizer elements and which elements will have antagonistic effects? These basic questions!

The relationship between different elements of fertilizer

In order to facilitate a better understanding of the various fertilizers, we now use a contact map to express the relationship between the various fertilizers, where the black line indicates antagonism and the green line is synergistic.

Fertilizer element "phase grams" effect

Nitrogen fertilizer: The physiological acid ammonium nitrogen excess of nitrogen fertilizer easily causes the excessive ammonium ion in the soil solution to antagonize magnesium and calcium ions, affecting the absorption of magnesium and calcium by crops. Excessive application of nitrogen fertilizer will lead to a large increase in potassium demand, which may easily lead to potassium deficiency in crops.

Phosphate fertilizer: It cannot be applied together with zinc because phosphorus and zinc can react to form a zinc phosphate precipitate, resulting in a decrease in the utilization of phosphorus and zinc. If the excessive application of phosphate fertilizer in the crop planting process will make the phosphorus out, it will inhibit the nitrogen uptake of the crop, resulting in copper deficiency, boron deficiency and magnesium deficiency.

Potassium fertilizer: Excessive application, first cause concentration disorder, making plants susceptible to pests and diseases, and then antagonizing calcium, magnesium, boron, etc. in soil and plants, causing crop diseases in severe cases, such as peppers, tomatoes and other fruits appearing umbilical rot and The yellowing of the leaves can cause a reduction in production in severe cases.

Calcium fertilizer: If there is too much calcium fertilizer, it will hinder the absorption of nitrogen and potassium, which will easily cause the new leaves of the crop to be burned and the leaves are light. If lime is applied to cause excessive calcium ions in the soil solution, it will antagonize the magnesium ions and affect the absorption of magnesium by the crop. Ammonium salt can reduce the absorption of calcium and reduce the transfer of calcium to fruits; the application of sodium and sulfur can also reduce the absorption of calcium; increasing the aluminum, manganese and nitrogen in the soil will also reduce the absorption of calcium.

Magnesium fertilizer: Potassium affects magnesium, too much will affect its absorption, and excessive sodium is also not conducive to the absorption of magnesium, which will cause magnesium deficiency. Magnesium has antagonistic effects with calcium, potassium, ammonium and hydrogen. Increasing sulfates can cause crops to be deficient in magnesium. Magnesium can eliminate the toxicity of calcium, and it is easy to induce zinc deficiency and manganese deficiency. However, magnesium and zinc have mutually reinforcing effects.

Iron fertilizer: Polyboron affects the absorption of iron and reduces the iron content in plants. Nitrate nitrogen affects the absorption of iron. Vanadium and iron have antagonistic effects, causing more iron-deficient elements. Their order is Ni>Cu>Co. >Gr>Zn>Mo>Mn. In general, potassium is insufficient and causes iron deficiency, but a large amount of nitrogen, phosphorus and calcium can cause iron deficiency.

Boron fertilizer: Iron and aluminum oxides can cause boron deficiency, and aluminum, magnesium, calcium, potassium, and sodium hydroxides can cause boron deficiency. Long-term lack of nitrogen, phosphorus, potassium and iron leads to a lack of boron. Increasing potassium can increase the lack of boron. If potassium is absent, it will cause a small amount of boron poisoning. The amount of nitrogen and the amount of boron are interactions, and both must advance and retreat. Other complex elements such as lanthanum, aluminum and lanthanum have an effect of improving boron deficiency.

Manganese fertilizer: Calcium, zinc, and iron react with manganese, which hinders its absorption. Iron hydroxide can cause manganese to precipitate. Therefore, physiological alkaline fertilizer can be applied to fix manganese. Vanadium can slow the toxicity of manganese. Sulfur and chlorine can increase the manganese in the released state and the effective state, which is beneficial to the absorption of manganese, which is not conducive to the absorption of manganese.

Molybdenum fertilizer: nitrate nitrogen is beneficial to the absorption of molybdenum, ammonia nitrogen is not conducive to the absorption of molybdenum; sulfate is not conducive to the absorption of molybdenum. A large amount of calcium, aluminum, lead, and iron, copper, and manganese all hinder the absorption of molybdenum. In the state of phosphorus deficiency and sulfur deficiency, molybdenum is inevitably deficient, increasing phosphorus is beneficial to the absorption of molybdenum, and increasing sulfur is unfavorable; when phosphorus is abundant, more molybdenum is required. Therefore, excessive phosphorus sometimes leads to the lack of molybdenum.

Zinc fertilizer: makes zinc form hydroxide, carbonate and phosphate into an unacceptable state. Plants require an appropriate p/Zn ratio (typically 100-120, more than 250 zinc deficiency). Excessive phosphorus can lead to zinc deficiency. The amount of zinc needed is proportional to the nitrogen demand. Nitrate is beneficial to the absorption of zinc, which is not conducive to the absorption of zinc. If potassium and calcium are added, it is also not conducive to the absorption of zinc. Also, manganese, copper, and molybdenum do not absorb zinc well, but magnesium and zinc have mutual effects.

Copper fertilizer: application of physiological acid nitrogen or potassium fertilizer can increase the activity of copper and facilitate absorption. The formation of copper phosphates, carbonates and hydroxides hinders absorption, so carbon dioxide, carbonic acid and calcium-rich soils are not conducive to copper absorption. Phosphorus can cause copper. The generation of hydrogen sulfide in the anaerobic state of the soil also hinders the absorption of copper. Copper is also antagonized with aluminum, iron, zinc and manganese. Nitrogen is also not conducive to the absorption of copper.

After reading the relationship between the above various fertilizers, the farmers should be careful to fertilize. In the same plot, it is best to apply different fertilizers that have a promoting effect. If the antagonistic effect is applied, it will not only affect the crops, but Continued use of soil is also disadvantageous.

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