To prevent the fertilizer between the ” contradiction” method

1 as much as possible to balance fertilization

The use of fertilizers or more fertilizers for crops is not only a waste of fertilizer, an increase in production costs, but also lead to the lack of some other or some nutritional elements. Fertilization, according to the different needs of the fertilizer structure of the soil and the capacity of the soil for fertilizer, so that the amount of intake, not a lot of nutrient balance, so that you can live in peace.

2 according to different crops on the proportion of various nutritional elements of the relationship between the increase, to increase by

 

Relative to the single fertilizer, the compound fertilizer or compound fertilizer nutritional elements of the proportion of more appropriate and coordinated. Therefore, fertilizer should be based on compound fertilizer, supplemented by a single fertilizer, such as for the tubers, roots for the harvest of vegetables such as vegetables and other large amount of potassium crops can be applied on the basis of sulfur-based compound fertilizer, and then increase the appropriate Potassium sulfate Elemental fertilizer for supplement.

3 staggered application period or application site

Zinc fertilizer and phosphate fertilizer if mixed, will inevitably produce “phase grams.” Therefore, phosphate fertilizer should be used as base fertilizer or base fertilizer application, zinc fertilizer should be applied topdressing. Nitrogen, phosphorus, potassium and other elements of fertilizer should be root-based topdressing, micro-fertilizer should be taken to spray the method of foliage.

4 Narrow the contact range

Nitrogen, potash fertilizer can be used to apply the method; phosphate fertilizer can be used to focus on fertilization method; micro-fertilizer can be used seed dressing, soaking, dipping the root and other methods, so that trace elements in the root of this smaller range, as far as possible with a large number Element contact.

Fertilizers contain a variety of elements, different crops, different soils, different periods of the required elements and dosage are different, but these elements have a relationship between each other? What elements will have antagonism? These basic problems can be grasped in the future fertilization must be used! Today we will learn together.

The elements will be counterproductive

Nitrogen: the absorption of nitrate nitrogen than the absorption of ammonia nitrogen difficult; the application of excessive potassium and phosphorus are affecting the absorption of nitrogen; boron is not conducive to nitrogen absorption.

Phosphorus: increased zinc can reduce the absorption of phosphorus; nitrogen is not conducive to the absorption of phosphorus; iron on the absorption of phosphorus also have antagonistic effect; increased lime can make phosphorus can not be given to the state; magnesium can promote the absorption of phosphorus.

Potassium: increased boron to promote the absorption of potassium, zinc can reduce the absorption of potassium; nitrogen is not conducive to the absorption of potassium; calcium, magnesium on the absorption of potassium antagonistic effect.

Calcium: potassium affects the absorption of calcium and reduces the level of calcium nutrition; magnesium affects the transport of calcium, magnesium and boron have antagonistic effects on calcium; ammonium salts can reduce the absorption of calcium and reduce the transfer of calcium to fruit; Can also reduce the absorption of calcium; increase the soil of aluminum, manganese, nitrogen, will also reduce the absorption of calcium.

Magnesium: potassium and more affect the absorption of magnesium, a large number of sodium and phosphorus is not conducive to the absorption of magnesium, nitrogen can cause magnesium deficiency. Magnesium and calcium, potassium, ammonium, hydrogen have antagonistic effect, increased sulfate can cause magnesium deficiency. Magnesium can eliminate calcium poisoning. Magnesium deficiency is easy to induce zinc deficiency and manganese deficiency. Magnesium and zinc have a mutual effect.

Iron: the effect of iron on the absorption of iron and reduce the content of iron in the plant, nitrate nitrogen affect the absorption of iron, vanadium and iron have antagonistic effect, causing more iron deficiency elements, the order of which is Ni> Cu> Co> Gr> Zn> Mo> Mn. Potassium deficiency can cause iron deficiency; large amounts of nitrogen, phosphorus and calcium can cause iron deficiency.

Boron: iron and aluminum oxides can cause boron deficiency; aluminum, magnesium, calcium, potassium, sodium hydroxide can cause boron deficiency; long-term lack of nitrogen, phosphorus, potassium and iron will lead to the lack of boron; The lack of boron, potassium deficiency will lead to a small amount of boron poisoning; increased nitrogen, boron also increased, will lead to the lack of boron. Manganese is disadvantageous to the absorption of boron, and the plants need appropriate Ca / B and K / B ratios (eg, C / B is 1234 milliequivalents and K / B is 1142 milliequivalents). As well as the appropriate Ca / Mg ratio. Boron has a controlled effect on Ca / Mg and Ca / K ratios. Several elements that form complexes, such as strontium, aluminum and germanium, have a temporary effect on boron deficiency.

 

Manganese: calcium, zinc, iron hinder the absorption of manganese, iron hydroxide can make manganese precipitation. Application of physiological alkaline fertilizer to make manganese fixed. Vanadium can slow the poisoning of manganese. Sulfur and chlorine can increase the release state and the effective state of manganese, is conducive to the absorption of manganese, copper is not conducive to the absorption of manganese.

 

Molybdenum: nitrate nitrogen is conducive 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 lot of calcium, aluminum, lead and iron, copper, manganese are hinder the absorption of molybdenum. In the state of phosphorus deficiency and lack of sulfur, the inevitable lack of molybdenum, phosphorus increased absorption of molybdenum beneficial to increase sulfur is detrimental; phosphorus for many times to be more molybdenum, so excessive phosphorus sometimes lead to the lack of molybdenum.

 

Zinc: Zinc formation of hydroxides, carbonates and phosphates are not available. Plants require an appropriate p / Zn ratio (typically 100 to 120, greater than 250 for zinc deficiency). Phosphorus excess will lead to zinc deficiency, nitrogen and zinc for many times, and sometimes lead to zinc deficiency, nitrate nitrogen is conducive to the absorption of zinc, ammonia nitrogen is not conducive to zinc absorption. Increase the absorption of potassium and calcium adverse zinc. Manganese, copper, molybdenum is not conducive to zinc absorption. Magnesium, zinc between the role of mutual absorption. Zinc deficiency leads to less potassium in the roots. Soil in the Si / Mg ratio of low clay particles will be lack of Zn, zinc antagonistic iron absorption.

 

Copper: the application of physiological acid nitrogen or potash fertilizer can improve the activity of copper, is conducive to absorption. The formation of copper phosphate, carbonate and hydroxide are hinder the absorption, so rich in Co2, carbonic acid and calcium-rich soil, is not conducive to the absorption of copper. Phosphorus can cause copper. Soil anaerobic H2S also hinders copper absorption. Copper is also antagonized with aluminum, iron, zinc and manganese. Nitrogen for a long time is not conducive to the absorption of copper.

 

Soil physical and chemical properties of the bad

 

The physical and chemical properties mentioned here mainly refer to factors related to nutrient uptake. The growth of the normal and vigorous topsoil depends on the good development of the roots, the deeper the root distribution, the more the amount of nutrients absorbed, and the more nutrient species that may be absorbed. Strong soil and solid, the bottom of a hard disk, bleaching layer, the groundwater level will limit the extension of the root system to reduce crop absorption of nutrients, aggravated or trigger deficiency disease.

 

In the calcareous soil, high groundwater levels also increase the amount of bicarbonate ions (HC03-) in the soil solution and affect the iron content of the soil in the low-lying groundwater level during the meadow rainy season. Of the effectiveness, thus triggering or exacerbating iron deficiency and so on. Unreasonable land formation makes the poor nature of the poor barren bottom of the soil also often become a lack of reasons.

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