CN1023475C - Humic acid type compound spray fertilizers - Google Patents

Abstract

The present invention relates to a humic acid type compound spray fertilizer which belongs to a real multielement compound fertilizer and has the key point that materials with a defined content are made into a water soluble fertilizer without any suspended matter or precipitate through chemical reactions. Humic acid, nitrogen, phosphorus, potassium (greater than 25%) with a defined content, the trace elements of zinc, copper, manganese, molybdenum, magnmium, boron and the rare earth elements of lanthanium, cerium, praseodymium, neodynoium, etc. are made into the liquid spray fertilizer. The efficiency is increased, and the cost is reduced. Spray is convenient without toxicity, harm or pollution, the structure of soil can not be influenced by fertilizer application for long time, and the humic acid type compound spray fertilizer provides a trend of fertilizer application.

Description

Humic acid type compound spray fertilizers

The present invention relates to the preparation method of liquid fertilizer, especially relate to the preparation method of high nitrogen, phosphorus, potassium content liquid fertilizer.

At present the kind of liquid fertilizer is a lot, but nitrogen, phosphorus in the most liquid fertilizer, potassium content is on the low side, does not satisfy the requirement of agriculture production.SU1587029 had once put down in writing and has utilized KOH and Tripyrophosphoric acid to produce high N-P-K content liquid fertilizer, but because this method is to adopt two-stage process to obtain high N-P-K content liquid fertilizer material, so the product cost height.SU912725 once described when the inorganic suspension fertilizers of preparation and uses mud coal as stablizer, because mud coal impurity is many, consumption is big, so there are many defectives.

Humic acids can impel the plant root prosperity, except that anti-holding up, can also improve the ability that absorbs nutrient, moisture content, strengthen photosynthesis, when drought, can make the blade face pore reduce 16%, strengthen drought-resistant ability, can also improve the resistance of plant and improve crop quality, chemical fertilizer is had significant synergism.

In order to overcome above-mentioned defective and the advantage that makes full use of humic acids, the object of the present invention is to provide a kind of preparation method of humic acid type compound spray fertilizers material.

The preparation method of the application's humic acid type compound spray fertilizers specifically describes as follows:

One, neutral contains the preparation of urea phosphoric acid hydrogen potassium solution: to boil because of the heat release spray in order reducing to react, add 100kgH in 100kg potassium hydroxide ₂The O dissolving obtains potassium hydroxide solution, in 140kg phosphoric acid, add 140kg water and obtain phosphoric acid solution, slowly add its phosphoric acid solution in the potassium hydroxide solution again, obtaining PH is that neutral does not have the phosphoric acid hydrogen potassium solution that crystal folds, add 300kg urea then while hot, be stirred to the dissolving of whole urea and obtain 780kg and contain urea neutral phosphoric acid hydrogen potassium solution, its solution contains P ₂O ₅〉=10%, K ₂O 〉=8%.

Two, the preparation of complexing humic acid organic zinc solution takes by weighing the zinc humic acid lotion that 50kg contains organic zinc 10% and is dissolved in the 50kg water, as has ready conditions and can adopt colloidal mill that it is dispersed in the water, obtains 100kg solution, and this solution contains humic acids 5%, zinc 5%.

Three, the preparation of cupric nitrate, manganese, magnesium solution

A buys finished product from the market with 10 times of water dissolution, and its solution contains cupric nitrate 10% respectively, manganous nitrate 10%, magnesium nitrate 10%.

B prepares with nitric acid:

Cupric nitrate: use copper scale and nitric acid reaction:

Manganous nitrate: use manganous carbonate and nitric acid reaction:

Magnesium nitrate: use magnesium oxide and nitric acid reaction:

The content of copper, manganese, magnesium and (A's) is identical in above-mentioned three kinds of solution.

Four, ammonium molybdate solution

Buy ammonium molybdate from market with 10 times of water dissolution, obtain containing ammonium molybdate 10% solution.

Five, boric acid solution

The boric acid of buying from market obtains boronic acid containing 10% solution with 10 times of water dissolution.

Six, earth solution

10 times of water dissolution of the rare earth of buying from market obtain containing rare earth 10% solution, get cupric nitrate, manganous nitrate, magnesium nitrate, each 5kg of ammonium molybdate solution that above-mentioned steps makes, boric acid solution 25kg, earth solution 10kg is added to the 780kg neutral respectively and contains in the urea phosphoric acid hydrogen potassium solution, after mixing, add complexing humic acid organic zinc solution 100kg again, add 50kg urea at last, and use H ₂It is the compound spray quinoline of 1000kg humic acid type fertilizer that O is transferred to total amount.

Finished mother liquid is that brownish black does not have any suspension and sedimentary water soluble liq, the dilution back is brown transparent liquid, it is real multi-elements composite fertilizer, nitrogen, phosphorus, potassium content meet the required standard (Star 30%) of country to composite fertilizer＞25%, this fertile convenient spraying, cost is low, instant effect, the public 3-5 unit/mu that topdresses once, and can same sterilant.The topdress desinsection or the weeding dual function of topdressing are played in the weedicide coupling, and this liquid fertilizer is not joined any irrelevant chemical substance such as dispersion agent, harmful ions such as tensio-active agent etc. and chlorine, and real is nontoxic, harmless, pollution-free, is applicable to any crop

Another characteristics of the present invention are directly not use phosphorus potash fertilizer, but produce the reaction formula of potassium primary phosphate by changing routine, adopt the KOH amount to be a bit larger tham the amount of producing potassium primary phosphate, obtain not having the neutral colourless transparent liquid that crystal is separated out after the reaction, we claim that it is a potassium hydrogen phosphate liquid, this is the crucial mother liquor of production conformance with standard content spray fertilizer, the pH value one-time-reach-place is used acid again to neutral after having saved, alkali is transferred the trouble of pH value, also make raw material and product more simple, easy technology.

The humic acid type compound spray fertilizers effect of increasing production

Plant root after liquid fertilizer through being added with humic acids sprays is obviously flourishing, and disease-resistant, worm, evil anti-ly hold up ability and drought resistance obviously to strengthen, and spray back two days leaves and obviously turn green, and be obviously elongated after four days.

Concrete yield-increasing efficiency is as follows

Kind amount of increase in production improvement effect

Paddy rice 12%

Wheat 15%

Corn 20%

Beans 15%

Peanut 15% completely filled fruit

Cotton 20%

Tobacco 30% quality strengthens

Tealeaves 30% quality strengthens

Watermelon 30% sugariness increases by 6%

Part increase by 15% of grape 20% sugar

Rape 15%

Vegetables 30%

Peach 20% reduces the shedding quality and strengthens

Apple 20% reduces the shedding sugariness and strengthens

Claims (1)

1, a kind of preparation method of humic acid type compound spray fertilizers material is characterized in that it comprises the steps (by weight):

1, be that ratio that 1: 1 solution slowly joins potassium hydroxide and water is in 1: 1 the potassium hydroxide solution with the ratio of phosphoric acid and water, phosphoric acid solution is 1 with the ratio of potassium hydroxide aqueous solution in its mixing solutions, 4: 1, add urea then, the ratio of its urea and aforementioned mixing solutions is to be stirred to urea at 1: 0.8 all to dissolve, obtain urea-containing neutral phosphoric acid hydrogen potassium solution

2, water dissolves complexing humic acid calamine cream body in 1: 1 ratio,

3, water dissolves cupric nitrate, magnesium nitrate, manganous nitrate, ammonium molybdate, boric acid, rare earth in 1: 10 ratio,

4, get respectively 5 parts of above-mentioned cupric nitrate, magnesium nitrate, manganous nitrate, ammonium molybdate solutions, 25 parts of boric acid solution, 10 parts of earth solutions, be added to 780 parts of above-mentioned containing in the urea phosphoric acid hydrogen potassium solution respectively, add 100 parts of above-mentioned complexing humic acid zinc solutions again, add 50 parts of urea at last, and water to adjust to total amount be 1000 parts, obtain its product.

2, water dissolves complexing humic acid calamine cream body in 1: 1 ratio,

3, water dissolves cupric nitrate, magnesium nitrate, manganous nitrate, ammonium molybdate, boric acid, rare earth in 1: 10 ratio,

4, get respectively 5 parts of above-mentioned cupric nitrate, magnesium nitrate, manganous nitrate, ammonium molybdate solutions, 25 parts of boric acid solution, 10 parts of earth solutions, be added to 780 parts of above-mentioned containing in the urea phosphoric acid hydrogen potassium solution respectively, add 100 parts of above-mentioned complexing humic acid zinc solutions again, add 50 parts of urea at last, and water to adjust to total amount be 1000 parts, obtain its product.