CN1216759A - Humic acid composite fertilizer and the prepn. method therefor - Google Patents
Humic acid composite fertilizer and the prepn. method therefor Download PDFInfo
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Abstract
The humic acid composite fertilizer is made up by using the following ingredients: (wt%) urea 3-45, diammonium phosphate 12-50, potassium chloride or potassium sulfate 6-42, brown coal 14-55, ammonia water 3-10, bentonite 2-4, sodium silicate 1-2 and trace elements of zinc, boron and manganese 1-2. Said invention also can be made into various special-purpose fertilizers for rice, maize, beans, fruit tree and tobacco by changing the contents of the above-mentioned ingredients. Said invention possesses the advantages of improving soil, raising of the above-mentioned ingredients. Said invention possesses the advantages of improving soil, raising crops yield and quality, raising disease resistance, coldness resistance and dry resistance, and promoting early-maturing and possessing several nutrients necessary for crops growth. Besides, present invention also provides the production method of said humic acid composite fertilizer.
Description
The present invention relates to the agricultural fertilizer field, specifically be meant a kind of humic acid combined fertilizer and production method thereof.
At present, compound manure mainly is divided into two big classes: the first kind is the inorganic composite fertilizer class; Second class is organic and inorganic compound manure class, is representative with composite bio-fertilizer and rotten acids composite fertilizer mainly.Composite bio-fertilizer mainly is to be carrier with chicken manure, deer excrement or rabbit excrement, adds some sulfuric acid, wollastonite, zeolite, silicon sol or some other trace element etc. and makes.Because of some useful microorganisms are contained in such composite fertilizer, so in the southern climates warm moist, application effect is relatively good; And in the north, cold dry because of weather, be unfavorable for microbial activities, so such fertilizer at northern DeGrain, bad adaptability has sectional center sex-limited.The humic acid combined fertilizer mainly is to be main raw material with mud coal (claiming the peat composed of rotten mosses or peat again), brown coal, weathered coal, and according to the height of content of humic acid wherein and with what different of amount of material such as humic acid bonded calcium, magnesium, adopt diverse ways, add some ammoniacal liquor (or hydrochloric acid, sulfuric acid, nitric acid) or bone ground-slag and ground phosphate rock etc. and make humic acids composite fertilizer, once utilized nitro humus acid and the magnesium acid ore deposit reaction that contains of pulverizing to make the magnesium nitro-humate silicon fertilizer as Japan abroad, through calcining.The product of China's production at present has: ammonium nitro-humate, ammonium humate, sodium humate, potassium humate, humic acid phosphorus and humic acid compound nitrogen phosphate fertilizer.The technology of the production method of humic acid fertilizers mainly contains: direct nitridation method, acid wash, salt double decomposition, alkali extraction process, nitric acid oxidation method, comprehensive oxidation style, air ozone oxidation and air oxidation process etc.Their common ground all is insoluble humic acid and insoluble salt thereof will be transformed into the humate of solubility, so that absorbed by plant; Or low the managing of content of humic acid makes its raising.There are many problem and shortage at present in existing production technology of composite fertilizer and the prescription:
1, present compound manure production quantity is few, and kind is single, and it is low to use coverage rate, is the compound manure of lower concentration poor efficiency on the kind, more than 70%, and practical crop mainly concentrates on the corn, cash crop are a small amount of.
2, the contained nutrients ratio of compound manure is fixed at present, can not satisfy the requirement of all kinds of soil and various crops fully, also need to be adjusted additional with straight fertilizer, the phenomenon that has then caused the superfluous waste of indivedual principal elements (among N, P, the K a kind of) that has, this has just increased manpower and labour cost to the peasant, makes the farming complicated operationization.
3, also do not have a kind of composite fertilizer can improve grain yield and quality significantly at present, improve the soil, improve cold-resistant disease-resistant drought-resistant ability, can make the crop premature ripening again, to adapt to the north short characteristics of frostless season.
The purpose of this invention is to provide and a kind ofly can improve the soil, increase crop yield and quality, the cold-resistant disease-resistant drought-resistant ability of raising, promote the crop precocity, be applicable to the multiple kinds of crops needed humic acid combined fertilizer of growing.
Another object of the present invention has provided the production method of humic acid combined fertilizer.
Technical scheme of the present invention is as follows:
The humic acid combined fertilizer is made by the following raw materials according proportioning:
Urea 3-45 diammonium phosphate 12-50
Repone K or vitriolate of tartar 6-42 brown coal 14-55
Ammoniacal liquor 3-10 bentonite 2-4
Water glass 1-2 trace element zinc, boron, manganese 1-2
Above unit is weight percentage.
Corn, paddy rice-dedicated fertilizer are made by the proportioning of following raw materials according by the humic acid combined fertilizer:
Urea 15-45 diammonium phosphate 14--25
Repone K or vitriolate of tartar 6-9 brown coal 20-55
Ammoniacal liquor 4-10 bentonite 2-4
Water glass 1-2 trace element zinc, boron, manganese 1-2
Above unit is weight percentage.
It is special-purpose fertile that pulse family is made by the proportioning of following raw materials according by the humic acid combined fertilizer:
Urea 3-4 diammonium phosphate 40--50
Repone K or vitriolate of tartar 7-10 brown coal 30-40
Ammoniacal liquor 6-8 bentonite 2-3
Water glass 1-2 trace element zinc, boron, manganese 1-2
Above unit is weight percentage.
Fruit-specific fertilizer is made by the proportioning of following raw materials according by the humic acid combined fertilizer:
Urea 30-40 diammonium phosphate 20-25
Repone K or vitriolate of tartar 16-20 brown coal 15-26
Ammoniacal liquor 3.5-5 bentonite 2-3
Water glass 1-2 trace element zinc, boron, manganese 1-2
Above unit is weight percentage.
Fertilizer special for tobacco is made by the proportioning of following raw materials according by the humic acid combined fertilizer:
Urea 8-19 diammonium phosphate 12-33
Vitriolate of tartar 27-42 brown coal 14-34
Ammoniacal liquor 3-6 bentonite 2-3
Water glass 1-2 trace element zinc, boron, manganese 1-2
Above unit is weight percentage.
The production method of humic acid combined fertilizer:
A, the raw material brown coal are carried out drying, make its moisture content, then pulverized and drop into the ammoniacal liquor that adds the raw material quantity of concentration 18% in the ammoniator behind the 80-100 mesh sieve and carry out ammonification and handle less than 20%, at normal temperatures and pressures, slaking made it that chemical reaction take place and generates ammonium humate more than 3 days, and is stand-by;
B, will pulverize, sieve 60-80 purpose mineral manure urea, diammonium phosphate, Repone K or vitriolate of tartar and as bentonite, water glass and the trace element zinc of additive, boron, manganese together with mixing of materials granulation, the oven dry of slaking more than 3 days, cool off, sieve, last packaging final prod, wherein the material moisture content after the oven dry remains on 2.5-5.0%, pH value is 7-8, raw meal particle size 1-4.7mm.
Composite fertilizer of the present invention is except the advantage of inheriting humic acid fertilizers and inorganic composite fertilizer, also overcome humic acid fertilizers N, P, K content is lower, the shortcoming and the pure inorganic composite fertilizer that also need cooperate other inorganic fertilizer to use lose more situation to harm and fertilizer efficiency that soil causes, so this fertilizer can be described as the effect of both having immediate effect, the new-type fertilizer that a kind of high-efficiency multi-function of slow effect is arranged again, its major advantage is studied comparing result by experiment, mainly shows the following aspects:
1, can improve the crumb structure of soil, prevent the soil erosion nutrient loss that causes because of rainwater, moisture content reduces, increases the non-irrigated ability of doing, and replenishes the soil ulmin in the soil, improves the fertility of soil.
2, can increase the surge capability of soil, improvement acid soil and transformation salinity ground.Because of humic acid has stronger ion-exchange capacity and adsorption, to the positively charged ion (Na in the soil
+, Ca
2+, Mg
2+, Fe
3+, Al
3+) and negatively charged ion (Cl
-, SO
4 2-) have very strong exchange capacity, kept the potential of hydrogen in the soil.Simultaneously,, destroyed the condition that salinity rises, played effect, helped keeping a full stand of seedings and plant growth every salt and the salt accumulation of minimizing upper soll layer because of having changed the soil surface structure in saltings.
3, can improve the phosphoric acid salt utilization ratio, nitrogen, phosphorus, potassium are played synergism.Because of in the different soil of potential of hydrogen, have only when containing organic acid in the soil, phosphoric acid just can be converted into mono-calcium phosphate, can be made effect that the absorption of phosphorus is increased 10-30% by plant absorbing, to the absorption increase 5-15% of nitrogen.
4, can promote the source of plant food to increase available nutrient, reduce loss of chemical fertilizer.Because of this fertilizer is organic and the inorganic fertilizer material, it contains a large amount of organic substances, contains the required nutritive element carbon of plant-growth, oxygen, hydrogen, nitrogen etc. in the humic acid especially wherein.And the many mineral nutrient elements in its adsorbable again replacement and the activating soil, and contain the three big main nutrient elements such as nitrogen, phosphorus, potassium of quick-acting and late effect property, for plant provides necessary various nutritive elements.
5, such fertilizer has hormesis to plant, can improve the quality of output and raising product.
(1) it can promote the metabolism of plant.(2) its numerous plants and movable that can activate vegetable acid, help microorganism.(3) can promote the absorption of plant, crop is emerged in advance nutritive element, ripen in advance, the experiment contrast shows, generally can do sth. in advance 4-7 days maturations, improves ripening degree more than 7%.(4) this fertilizer can increase the ability that soil absorbs daylight luminous energy, improves 2-3 ℃ of the soil moisture, can increase the ability of cold-resistant, the diseases prevention of crop.(5) as can be known: this fertilizer not only increases production but also increase income, and also can reduce production costs, and reduces the number of times that topdresses, and saves manpower according to the experiment contrast.For example, in corn experiment field, it is compared with the chemical fertilizer of equivalence, and per hectare can reduce production costs more than 100 yuan, and 4-32% produces more food.Increase economic benefit 321-1980 unit; In paddy rice experiment field, per hectare can be saved fund 300-400 unit, and the 5-22.7% that produces more food increases economic benefit 556-2281.28 unit.
6, be according to the special proportioning of soil regime in Different Crop nutrient uptake feature and Jilin Province because of its each nutritive element content, so, as long as select the special-purpose fertile just passable of its crop, need not to be used when using, just can reach the ideal effect with other chemical fertilizer.In a word, show by proportion of crop planting application effect experiment at Longjing City, Jilin Province and several years small towns of Yanji family property technical station, no matter such fertilizer is to improve the soil, improve disease-resistant cold-resistant, the drought resisting aspect of farm crop, still improving aspects such as product production and quality, very obvious effects is arranged all, and in the farming operation, oversimplify more again, be subjected to peasant's welcome deeply, be worth so this fertilizer has very high promotion and application.
Effect of the present invention, advantage can be with reference to following laboratory report analyses.
The laboratory report analysis of the humic acid combined fertilizer of paddy rice special use (hereinafter to be referred as paddy rice-dedicated fertilizer):
One, test process
The experimental control district is two places, and the soil property of first check plot is cold slurry grass ten days soil, and the soil property of second check plot is a grass ten days type blackland, fertilising form and rate of fertilizer application such as table 1:
Table 1 unit: kilogram, hectare
| Test method | Total consumption/standard N | Base manure consumption wherein | Topdress with putting for the first time | Consumption topdresses for the second time | |
| Contrast 1 | Traditional standard fertilizer | ????900 | ????630 | ????90 | ????180 |
| Paddy rice-dedicated fertilizer | ????700 | ????500 | ????200 | ||
| Contrast 2 | Traditional standard fertilizer | ????900 | ????600 | ????150 | ????150 |
| Paddy rice-dedicated fertilizer | ????700 | ????500 | ????200 | ||
Two, test-results is with reference to table 2
Table 2
| The test site | Plant height (Cm) | Strain number/cave | Grain number/cave | Cave number/hectare | Kilogram/hectare | 100-grain weight (g) | Contrast increase and decrease % | |
| Contrast 1 | Tradition is fertile | ????108 | ????22 | ?1584 | ?180,000 | ?7,185 | ????25.2 | ????100 |
| Paddy rice-dedicated fertilizer | ????110 | ????25 | ?1682 | ?180,000 | ?7,720 | ????25.5 | ????108.8 | |
| Contrast 2 | Tradition is fertile | ????105 | ????30 | ?1735 | ?200,000 | ?8,675 | ????25.0 | ????100 |
| Paddy rice-dedicated fertilizer | ????109 | ????32 | ?1882 | ?200,000 | ?9,560 | ????25.4 | ????112 | |
Three, interpretation of result
From using situation, 1 waterlogged lowland, check plot uses special-purpose fertile 700 kilograms to satisfy between whole growing, required nutrient grows, than conventional method volume increase 8.8%, 100-grain weight increases 0.3g, and volume increase per hectare rice is closed 635 kilograms, is 1 by government purchase valency per kilogram paddy, 56 yuan of conversions, per hectare can increase income 990.60 yuan.2 paddy rice-dedicated fertilizer test sites, check plot are that soil layer is deep, fertile calculation first class.Use special-purpose fertile use by 700 kilograms after, status investigation is seen between whole growing, satisfies the required nutrient that grows between whole growing, also fertile a little amount is many, the phenomenon of local lodging occurs, if Shaoshi 50-100 kilogram/hectare ideal very.This fertilization area is than conventional method volume increase 12%, and 100-grain weight increases by 0.4 gram, and 885 kilograms of volume increase per hectare paddy are 1.56 yuan of conversions by government purchase valency per kilogram paddy, and per hectare can increase income 1480.60 yuan.
On the whole, paddy rice-dedicated fertilizer is saved the fertile 150-200 kilogram of standard/hectare than conventional method, shows through test-results, and this paddy rice-dedicated fertilizer has that nutrient is complete, and consumption is moderate, and fertilizer efficiency is higher, and characteristics such as volume increase are applied on the big area Rice Production from now on.
The trial report analysis of the humic acid combined fertilizer of corn special use (hereinafter to be referred as corn fertilizer):
One, test process
Soil property experimental field is a sandy soil, and physical features is smooth.Fertilising form and rate of fertilizer application are with reference to table 3:
Table 3 unit: hectare: kilogram
| Test method | Total consumption/standard fertilizer | Wherein the base manure mouth is fertile measures | Topdressing amount for the first time | Topdressing amount for the second time |
| Conventional criteria fertilizer | ????850 | ???400 | ??200 | ??250 |
| Corn fertilizer | ????750 | ?550+200 |
Two, test-results is with reference to table 4
Table 4
| The test site | 20m results strain number | 20m gathers in the crops spike number | Spike number/hectare | 10 fringe grain weight/grams | Kilogram/hectare | 100-grain weight (g) | Contrast increase and decrease (%) |
| Conventional criteria fertilizer | ????80 | ????84 | 4.2 ten thousand | 1.775 | ?7,455 | ?33.7 | ????100 |
| Corn fertilizer | ????81 | ????86 | 4.3 ten thousand | 1.900 | ?8,170 | ?34.0 | ????108.2 |
Three, interpretation of result
Corn fertilizer comparison more solito fertilization method, volume increase 8.2%, 615 kilograms of volume increase per hectare corns are 1.00 yuan of conversions by government purchase valency per kilogram corn, per hectare can increase income 615 yuan.
Corn fertilizer is than conventional fertilizer application method in general, and it is complete to have a long-acting nutrient, does base fertilizer or mouthful fertile disposable characteristics such as the higher volume increase of fertilizer efficiency that apply.
Below in conjunction with accompanying drawing embodiments of the invention are done a step explanation.
Fig. 1 is technological process of production figure of the present invention.
Embodiment 1:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 41 kilograms in urea, 22.5 kilograms of diammonium phosphate, 8 kilograms in Repone K, 20 kilograms in brown coal (content of humic acid＞20%), 4.5 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
In present embodiment and the following embodiment process, it is 40% that mineral manure urea contains N, and containing N and containing P of diammonium phosphate is respectively 18%, 46%, and it is 60% that Repone K contains K, and containing N in the ammoniacal liquor is 17%, and it is 50% that vitriolate of tartar contains K.
Production method (with reference to Fig. 1):
A, the raw material brown coal are carried out drying, make its water content, then pulverized and drop into the ammoniacal liquor that adds the raw material quantity of concentration 18% in the ammoniator behind the 80-100 mesh sieve and carry out ammonification and handle less than 20%, at normal temperatures and pressures, slaking made it that chemical reaction take place and generates ammonium humate more than 3 days, and is stand-by;
B, the 60-80 purpose mineral manure urea of will pulverizing, sieve, diammonium phosphate, Repone K and as bentonite, water glass and the trace element zinc of additive, boron, manganese together with the mixing of materials granulation of slaking more than 3 days, dry, cool off, sieve, last packaging final prod, wherein dry material moisture content and remain on 2.5-5.0%, pH value is 7-8, raw meal particle size 1-4.7mm.
This humic acid combined fertilizer can be used as the special-purpose fertile of corn, paddy rice high density nutrient content (percentage composition of N, P, K is respectively 24,11,5)＞40%.
Embodiment 2:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 30 kilograms in urea, 18 kilograms of diammonium phosphate, the Repone K 6.5 public Rooms, 33.4 kilograms in brown coal (content of humic acid＞20%), 8.1 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer can be used as the special-purpose fertilizer of concentration nutrient content (percentage composition of N, P, K is respectively 18,8,4)＞30% in corn, the paddy rice.
Embodiment 3:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 19.6 kilograms in urea, 15.4 kilograms of diammonium phosphate, 6 kilograms in Repone K, 46 kilograms in brown coal (content of humic acid＞20%), 9 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer can be used as the special-purpose fertilizer of concentration nutrient content (percentage composition of N, P, K is respectively 14,7,4)＞25% in corn, the paddy rice.
Embodiment 4:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 3.5 kilograms in urea, 43.5 kilograms of diammonium phosphate, 8 kilograms in Repone K, 33 kilograms in brown coal (content of humic acid＞20%), 8 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 11,20,5)＞36% can be used as the special-purpose fertile of soybean.
Embodiment 5:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 3.5 kilograms in urea, 43.5 kilograms of diammonium phosphate, 8.7 kilograms of vitriolate of tartar, 32.6 kilograms in brown coal (content of humic acid＞20%), 7.7 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 11,20,5)＞36% can be used as the special-purpose fertile of soybean.
Embodiment 6:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 33 kilograms in urea, 22 kilograms of diammonium phosphate, 17 kilograms in Repone K, 19.2 kilograms in brown coal (content of humic acid＞20%), 4.8 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
It is special-purpose fertile that this humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 20,10,10)＞40% can be used as the apple pear tree.
Embodiment 7:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 33 kilograms in urea, 22 kilograms of diammonium phosphate, 19.3 kilograms of vitriolate of tartar, 17.5 kilograms in brown coal (content of humic acid＞20%), 4.2 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
It is special-purpose fertile that this humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 20,10,10)＞40% can be used as the apple pear tree.
Embodiment 8:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 10 kilograms in urea, 13.3 kilograms of diammonium phosphate, 40 kilograms of vitriolate of tartar, 26.7 kilograms in brown coal (content of humic acid＞20%), 6 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 8,6,21)＞35% can be used as fertilizer special for tobacco.
Embodiment 9:
Per 100 kilograms of raw materials used proportionings: 1 kilogram in 18.5 kilograms in urea, 32.8 kilograms of diammonium phosphate, 27.7 kilograms of vitriolate of tartar, 14 kilograms in brown coal (content of humic acid＞20%), 3 kilograms of ammoniacal liquor, 2 kilograms of bentonites, 1 kilogram of water glass, trace element zinc, boron, manganese.
Production method is with embodiment 1.
This humic acid combined fertilizer's nutrient content (percentage composition of N, P, K is respectively 15,15,15)＞45% can be used as fertilizer special for tobacco.
Claims (6)
1, a kind of humic acid combined fertilizer, it is characterized in that making: urea 3-45 diammonium phosphate 12-50 Repone K or vitriolate of tartar 6-42 brown coal 14-55 ammoniacal liquor 3-10 bentonite 2-4 water glass 1-2 trace element zinc by the following raw materials according proportioning, boron, the above unit of manganese 1-2 is weight percentage.
2, humic acid combined fertilizer according to claim 1, it is characterized in that proportion of raw materials is: urea 15-45 diammonium phosphate 14-25 Repone K or vitriolate of tartar 6-9 brown coal 20-55 ammoniacal liquor 4-10 bentonite 2-4 water glass 1-2 trace element zinc, boron, the above unit of manganese 1-2 is weight percentage.
3, humic acid combined fertilizer according to claim 1, it is characterized in that proportion of raw materials is: urea 3-4 diammonium phosphate 40-50 Repone K or vitriolate of tartar 7-10 brown coal 30-40 ammoniacal liquor 6-8 bentonite 2-3 water glass 1-2 trace element zinc, boron, the above unit of manganese 1-2 is weight percentage.
4, humic acid combined fertilizer according to claim 1, it is characterized in that proportion of raw materials is: urea 30-40 diammonium phosphate 20-25 Repone K or vitriolate of tartar 16-20 brown coal 15-26 ammoniacal liquor 3.5-5 bentonite 2-3 water glass 1-2 trace element zinc, boron, the above unit of manganese 1-2 is weight percentage.
5, humic acid combined fertilizer according to claim 1, it is characterized in that proportion of raw materials is: urea 8-19 diammonium phosphate 12-33 vitriolate of tartar 27-42 brown coal 14-34 ammoniacal liquor 3-6 bentonite 2-3 water glass 1-2 trace element zinc, boron, the above unit of manganese 1-2 is weight percentage.
6, a kind of production method of humic acid combined fertilizer is characterized in that:
A, the raw material brown coal are carried out drying, make its moisture content less than 20%, then pulverized and drop into the ammoniacal liquor that adds the raw material quantity of concentration 18% in the chlorinator behind the 80-100 mesh sieve and carry out ammonification and handle, slaking is more than 3 days, and is stand-by;
B, will pulverize, sieve 60-80 purpose mineral manure urea, diammonium phosphate, Repone K or vitriolate of tartar and as bentonite, water glass and the trace element zinc of additive, boron, manganese together with mixing of materials granulation, the oven dry of slaking more than 3 days, cool off, sieve, last packaging final prod, wherein the material moisture content after the oven dry remains on 2.5-5.0%, pH value is 7-8, raw meal particle size 1-4.7mm.
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| CN103274799A (en) * | 2013-06-17 | 2013-09-04 | 山东亿丰源生物科技股份有限公司 | Organic and inorganic compound fertilizer and preparation method thereof |
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| CN115572205A (en) * | 2022-09-02 | 2023-01-06 | 中国烟草总公司黑龙江省公司牡丹江烟草科学研究所 | Flue-cured tobacco biomass silicon fertilizer and preparation method thereof |
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