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Trace elements include nutrients such as boron, zinc, molybdenum, iron, manganese and copper. Although plants require very little trace elements, their effects on plant growth and development are as important as large amounts of elements. When a trace element is lacking, the growth and development of the crop will be significantly affected, the yield will decrease, and the quality will decline. On the other hand, too much trace elements can poison crops, affecting yield and quality, and even endangering human and animal health in severe cases. With the continuous increase of crop yield and the large-scale application of chemical fertilizers, the demand for correct application of trace element fertilizers has become increasingly urgent. Among the trace element fertilizers, iron, manganese, zinc, copper sulfuric acid, boric acid, molybdate and monovalent salts thereof are usually used.
First, the application method of trace element fertilizer
1. Soil application of trace element fertilizer can be applied as base fertilizer, seed fertilizer or top dressing. In order to save fertilizer and improve fertilizer efficiency, it is usually carried out by means of application or acupoint application. The application of trace element fertilizers in soil has a certain aftereffect and can be applied every other year.
2. Planting shaft fertilization method The quick-acting micro-element fertilizer is mostly applied to plants. The fertilization methods are as follows:
(1) Seed dressing Dissolve the trace element fertilizer with a small amount of water, spray it on the seed, stir while spraying, so that the seed is stained with a layer of fertilizer solution, and dried after sowing. The amount of seed dressing is generally 1-6 g per kg of seed fertilizer and 40-60 mL of water.
(2) The soaking concentration of soaking trace element fertilizer is 0.01%-0.1%, the soaking time is 12-24h, and the seed-solution mass ratio is 1:1.
(3) This method can be used when applying root mineral fertilizer to rice and other transplanted crops. The concentration is from 0.1% to 1.0%. The fertilizer used for rooting does not contain substances that are harmful to the roots.
(4) External application of root spray is a cost-effective application method for the application of trace element fertilizer. The commonly used concentration is 0.02% - 0.1%. It is advisable to wet both sides of the blade with both sides. For the application of iron, zinc, boron, manganese and other trace element fertilizers which are easily fixed by soil, the application method is better.
Second, the application of trace element fertilizer should pay attention to matters
The application of trace element fertilizers has its particularity. If it is not applied properly, it will not only increase production, but will even cause serious damage to crops. In order to improve fertilizer efficiency and reduce injury, the following matters should be noted when applying:
1. Controlling the amount and concentration, and trying to apply uniform crops, the amount of trace elements is very small. The concentration range of many trace elements from lack to moderate amount is very narrow. Therefore, the application of trace element fertilizer should be strictly controlled to prevent the concentration from being too large, and the application must pay attention to uniformity. . It is also possible to mix the trace element fertilizer into an organic fertilizer.
2. The effectiveness and content of trace elements in different types and different textures are different for the trace elements in the soil, and the effect of applying trace element fertilizers is different. In general, the calcareous soil iron, zinc, manganese, copper and boron in the north are low in effectiveness and prone to lack; while the acid soil in the south is low in effectiveness. Therefore, the application of micro-fertilizer should be rationally applied to the condition of trace elements in the soil.
3. The response of various crops to trace elements is different. Different kinds of elements have different reactions. The sensitivity is different, the amount of demand is different, and the application effect is obviously different. For example, the effect of applying zinc fertilizer on corn is good. Sensitive to boron, gramineous crops are sensitive to manganese, and legume crops are sensitive to molybdenum and boron. Therefore, it is necessary to rationally select and apply the sensitivity and fertilizer efficiency of different crops to different trace elements.
4. Insufficient injection improves the supply of trace elements in the soil environment, often due to the influence of soil environmental conditions. The acidity and alkalinity of the ten soils is the primary factor affecting the effectiveness of trace elements, followed by soil texture, soil moisture, and soil redox status. In order to completely solve the problem of trace element deficiency, we should pay attention to improving soil environmental conditions while supplementing trace element nutrients. For example, acidic soil can adjust soil acidity and alkalinity by applying organic fertilizer or applying appropriate amount of lime to improve soil micronutrient status. .
5. The application of poisoning combined with a large amount of elemental fertilizer and organic fertilizer can only show the obvious yield increase effect under the premise that the bamboo element meets the needs of a large amount of elements such as nitrogen, phosphorus and potassium. Organic fertilizer contains a variety of trace elements, as an important source of nutrient supply to maintain soil micro-element fertility, can not be ignored. The application of organic fertilizer can adjust the soil environmental conditions to achieve the day of improving the effectiveness of trace elements. The combination of organic fertilizer and inorganic micro-fertilizer should be an important measure for the management of soil trace element nutrients in agricultural production in the future.
First, the application method of trace element fertilizer
1. Soil application of trace element fertilizer can be applied as base fertilizer, seed fertilizer or top dressing. In order to save fertilizer and improve fertilizer efficiency, it is usually carried out by means of application or acupoint application. The application of trace element fertilizers in soil has a certain aftereffect and can be applied every other year.
2. Planting shaft fertilization method The quick-acting micro-element fertilizer is mostly applied to plants. The fertilization methods are as follows:
(1) Seed dressing Dissolve the trace element fertilizer with a small amount of water, spray it on the seed, stir while spraying, so that the seed is stained with a layer of fertilizer solution, and dried after sowing. The amount of seed dressing is generally 1-6 g per kg of seed fertilizer and 40-60 mL of water.
(2) The soaking concentration of soaking trace element fertilizer is 0.01%-0.1%, the soaking time is 12-24h, and the seed-solution mass ratio is 1:1.
(3) This method can be used when applying root mineral fertilizer to rice and other transplanted crops. The concentration is from 0.1% to 1.0%. The fertilizer used for rooting does not contain substances that are harmful to the roots.
(4) External application of root spray is a cost-effective application method for the application of trace element fertilizer. The commonly used concentration is 0.02% - 0.1%. It is advisable to wet both sides of the blade with both sides. For the application of iron, zinc, boron, manganese and other trace element fertilizers which are easily fixed by soil, the application method is better.
Second, the application of trace element fertilizer should pay attention to matters
The application of trace element fertilizers has its particularity. If it is not applied properly, it will not only increase production, but will even cause serious damage to crops. In order to improve fertilizer efficiency and reduce injury, the following matters should be noted when applying:
1. Controlling the amount and concentration, and trying to apply uniform crops, the amount of trace elements is very small. The concentration range of many trace elements from lack to moderate amount is very narrow. Therefore, the application of trace element fertilizer should be strictly controlled to prevent the concentration from being too large, and the application must pay attention to uniformity. . It is also possible to mix the trace element fertilizer into an organic fertilizer.
2. The effectiveness and content of trace elements in different types and different textures are different for the trace elements in the soil, and the effect of applying trace element fertilizers is different. In general, the calcareous soil iron, zinc, manganese, copper and boron in the north are low in effectiveness and prone to lack; while the acid soil in the south is low in effectiveness. Therefore, the application of micro-fertilizer should be rationally applied to the condition of trace elements in the soil.
3. The response of various crops to trace elements is different. Different kinds of elements have different reactions. The sensitivity is different, the amount of demand is different, and the application effect is obviously different. For example, the effect of applying zinc fertilizer on corn is good. Sensitive to boron, gramineous crops are sensitive to manganese, and legume crops are sensitive to molybdenum and boron. Therefore, it is necessary to rationally select and apply the sensitivity and fertilizer efficiency of different crops to different trace elements.
4. Insufficient injection improves the supply of trace elements in the soil environment, often due to the influence of soil environmental conditions. The acidity and alkalinity of the ten soils is the primary factor affecting the effectiveness of trace elements, followed by soil texture, soil moisture, and soil redox status. In order to completely solve the problem of trace element deficiency, we should pay attention to improving soil environmental conditions while supplementing trace element nutrients. For example, acidic soil can adjust soil acidity and alkalinity by applying organic fertilizer or applying appropriate amount of lime to improve soil micronutrient status. .
5. The application of poisoning combined with a large amount of elemental fertilizer and organic fertilizer can only show the obvious yield increase effect under the premise that the bamboo element meets the needs of a large amount of elements such as nitrogen, phosphorus and potassium. Organic fertilizer contains a variety of trace elements, as an important source of nutrient supply to maintain soil micro-element fertility, can not be ignored. The application of organic fertilizer can adjust the soil environmental conditions to achieve the day of improving the effectiveness of trace elements. The combination of organic fertilizer and inorganic micro-fertilizer should be an important measure for the management of soil trace element nutrients in agricultural production in the future.
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Product Name: Iron Powder reduced
Search number: [CAS 7439-89-6
Molecular formula: Fe
Molecular weight: 55.845
Properties: Black amorphous powder. Soluble in dilute acid, insoluble in concentrated acid, dilute alkali solution exposed in the air and ether.
Or in case of water is easily oxidized.
Uses: powder metallurgy products reduced iron powder. Chemical reduction iron powder, mainly used in chemical catalyst, precious metal reduction, alloy addition, copper replacement.
Iron Powder
Iron Powder,Chemical Reducer Iron Powder,Iron Compounds,Low Silicon Iron Powder
Xi'An Lanzhiguang Fine Material CO.Ltd , http://www.lanzhiguangchem.com