Special nitrogen-phosphorus-potassium fertilizer for boron-free pineapple seedlings containing chelated trace elements

A technology of nitrogen, phosphorus, and potassium fertilizers and trace elements, which is applied in the field of nitrogen, phosphorus, and potassium fertilizers for boron-free pineapple seedlings, can solve problems such as difficulty in ensuring boron-free pineapple seedlings, difficulty in controlling dilution ratios, and low content of metal-rich elements, and achieves high cost performance. Improve nutrient absorption efficiency and high absorption and utilization efficiency

Inactive Publication Date: 2017-12-08
东台市富阳肥料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as a kind of chelated compound trace element fertilizer and its preparation method proposed by patent CN103467159A, but EDTA chelate is mostly used. EDTA chelate is not only expensive, but also has less metal-rich element content, and the pH needs to be above 7 to be good. Therefore, i

Method used

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preparation example Construction

[0035] 6. The preparation method of the citric acid chelated copper is: get citric acid and add water, after ultrasonic dissolution, add copper sulfate while stirring, the molar mass ratio of citric acid and copper sulfate is 2:1, adjust pH to 5.9, in Chelating reaction at 70°C for 1.5h, centrifuging the supernatant liquid and adding ethanol, filtering, washing the precipitate, and drying to obtain citric acid chelated copper, the mass percentage content of copper in the citric acid chelated copper is >23%;

[0036] 7. the preparation method of described citric acid chelated iron is: get citric acid and add water, after ultrasonic dissolving, add ferrous chloride and reduced iron powder while stirring, the molar mass proportioning of citric acid and ferrous chloride is 3: 2. Adjust the pH to 5.1, perform chelation reaction at 45°C for 1.5 hours, flush with nitrogen gas during the reaction, centrifuge to take the supernatant liquid, add ethanol, wash, filter and dry to obtain ci...

Embodiment 1

[0040] A preparation method of boron-free pineapple seedling-raising special nitrogen-phosphorus-potassium fertilizer containing chelated trace elements, the preparation method is as follows:

[0041] First, pre-mix 42 parts of ammonium dihydrogen phosphate solution and 57 parts of urea in parts by weight at 300 r / min for 30 minutes, and then evenly add potassium nitrate in 3 times and the number of parts is 102 parts After stirring and mixing for 1h at 250r / min, 3 parts of citric acid chelated iron, 2.8 parts of magnesium sulfate, 1.5 parts of citric acid chelated manganese, 0.7 part of citric acid chelated copper, 0.23 part of citric acid chelated zinc and 0.05 part of ammonium molybdate were stirred and mixed at 180r / min for 1.5h, then dried at 80°C and crushed.

Embodiment 2

[0043] A preparation method of boron-free pineapple seedling-raising special nitrogen-phosphorus-potassium fertilizer containing chelated trace elements, the preparation method is as follows:

[0044] First, in parts by weight, 40 parts of ammonium dihydrogen phosphate solution and 56 parts of urea were pre-mixed for 30 minutes at 350 r / min, and then the potassium nitrate was evenly added in 2 times and the number of parts was 100 parts. 3.1 parts of magnesium sulfate, 2.7 parts of citric acid chelated iron, 1.3 parts of citric acid chelated manganese, 0.6 part of citric acid chelated copper, 0.2 part of citric acid chelated zinc and 0.08 part of ammonium molybdate were stirred and mixed at 200r / min for 1.5h, then dried at 80°C and crushed.

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Abstract

The invention relates to a special nitrogen-phosphorus-potassium fertilizer for boron-free pineapple seedlings containing chelated trace elements. The special nitrogen-phosphorus-potassium fertilizer comprises the following components in parts by weight: 99 to 104 parts of potassium nitrate, 37 to 45 parts of ammonium dihydrogen phosphate, 55 to 60 parts of urea, 0.5 to 0.8 part of chelated copper, 2.5 to 3.5 parts of chelated iron, 0.2 to 0.25 part of chelated zinc and 1.0 to 2.0 part of chelated manganese. The special fertilizer for pineapple is also a formulated fertilizer for seedlings, has an excellent root-promoting effect on just transplanted seedlings, leaf rolling or falling of pineapple leaves can be avoided since no boron is contained, pineapple plant type can be tighter, the leaves are preferably stretched, the pineapple plant is slightly acid, the ionic stability is high, the safety is high, the water-soluble capacity is high, the fertilizer can be used with a plant protection product without strong acid or strong base simultaneously, the chelated trace elements are easily absorbed, the utilization rate can reach more than 90%, the cost is greatly reduced, the root-promoting effect of pineapple seedlings is improved, and the conditions such as soil hardening and salinization are relieved.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a boron-free nitrogen, phosphorus and potassium fertilizer specially used for pineapple seedling cultivation containing chelated trace elements. Background technique [0002] Pineapple is one of the famous tropical fruits with short stems. Many leaves, arranged in rosettes, sword-shaped, apex acuminate, entire margin or with sharp teeth, green on the belly, pink-green on the back, often brownish-red on the edge and apex, the leaves on the top of the inflorescence become smaller, often red, belonging to Angiosperms, monocots, powdery endosperms, like light, have high food value such as raw food, twisted juice, decoction, etc., and medicinal value such as relieving heat and thirst, digestion and diarrhea, etc., can be used as a food for ruminants High-quality feed, potted flowers, odor removal, etc. [0003] Pineapple is mainly planted in sandy water, and the choice of vigorous crown buds or desce...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05B7/00C05G3/80C05C3/00C05C5/02C05C9/00C05D5/00C05D9/02
Inventor 邓媛媛
Owner 东台市富阳肥料科技有限公司
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