Instantly summer harvest busy, be about to begin to sow the crop such as corn, earthnut then, choose good chemical fertilizer special key. Nevertheless, the chemical fertilizer variety that sells on the market is miscellaneous difficult argue of much, true and false. A few knowledge that buy manure are shared with everybody below, learn these everybody to won't be deceived. Had bought the farmer friend of fertilizer, everybody also mights as well contrast, the fertilizer that sees oneself buy has a problem.
One, urea of true and false of simple and fast distinction
Urea is the most commonly used nitrogenous fertilizer. We are commonly used the true and false that Wen Laijian trying water fastens urea: Put a cup of Wen Shui, catch an urea to be put into water, urea dissolves very quickly, after dissolving very clear, water is warm drop quickly, showing the quality that puts urea is eligible; If water is warm,the off quality that subtle fall explains place puts urea contains nitrogen the amount is small; If what put urea is a holiday, water is warm won't drop.
Additional, the country has firmer normative demand to urea, have already implement a standard compulsively relevantly, have relevant label demand again. Outer packing bag can be examined to whether accord with the following when everybody is bought, only should one does not accord with ought to special discretion:
What ① urea carries out is GBT 2440-2017 of national new standard (on the bag that pack must mark has) , what should pack the executive standard on bag to write only is not GBT 2440-2017, uniform it is fake.
The azotic content of ② eligible urea (N) must not under 45 ％ (be being counted under this is fake, be more than be equal to 46% it is classy article) , any other adding in adding composition not to calculate nutrient total content.
Write on ③ outer packing have " organic urea " , " actor peptide urea " , " the urea that contain sulfur " , " new-style urea " , " the urea that contain zinc " , " rare earth urea " wait for a name, the likelihood is fake urea, when buying, must take care, suggest to be not bought.
In addition, ammonium sulphate serves as a kind of nitrogenous fertilizer, if be written on outer packing bag, is not ammonium sulphate, change however cry " ammonium sulphate zinc " , " rare earth ammonium sulphate zinc " , " sulfur nitrogenous fertilizer " , " the nitrogenous fertilizer that contain sulfur " , " nitrogenous fertilizer of polypeptide Niao ammonium " wait for a name, false conduct propaganda, misdirect is bought fake perhaps the problem of the product, also remind broad farmer the friend must take care, do not want to buy as far as possible.
2, how to differentiate phosphate fertilizer
The calcium superphosphate of phosphate fertilizer nothing is more... than that everybody often uses. The country is GB/T 20413-2006 to the executive standard of calcium superphosphate, what write on outer packing belt is not this state level, perhaps produce license number without paint from life, it is fake undoubted, scarcely wants to buy.
Additional, to the phosphate fertilizer that sells on the market, always the name is " polypeptide phosphor " , " phosphorous zinc acid is calcic " , " humic acerbity phosphor is calcic " , " organic and active phosphor " , free acid is calcic " those who wait, basically also may not is true agricultural phosphate fertilizer, fake perhaps crop, perhaps put in the suspicion that misdirect consumes, everybody also does not want to buy certainly.
In addition, phosphoric acid 2 ammonium also are commonly used phosphate fertilizer, true and false is differentiated also have exquisite. The country of 2 ammonium carries out phosphoric acid the standard is GBT 10205-2009 (qualification of the quantity that contain phosphor tastes lowest to be not gotten under 39.0% ) , what always tag is not this state level or phosphorous content under 39 ％ is fake, additional, have to tagging " American technology " , " organic phosphoric acid 2 ammonium " wait for fertilizer name, what perhaps carry out a standard to write is Q/CGYZ004-2006 (this is industry standard) , also do not want to buy, be in an unfavorable situation easily otherwise be deceived.
1, true phosphoric acid 2 ammonium are very hard, not easy by pulverize, false phosphoric acid 2 ammonium are easy by pulverize.
2, catch a fertilizer to be grasped a few times forcibly, have " oil is wet " of feeling it is quality goods namely, and dry probable be to use inferior and compound fertilizer to pretend to be.
3, in taking grain of a few fertilizer to put recipient, solve with Shui Rong, add a few alkaline areas to the middle of solution, cross one small conference the fertilizer qualification that risks a bleb is tasted. What risk a bleb immediately is OK concluding is not phosphoric acid 2 ammonium.
3, compound / the true and false that mix fertilizer is differentiated
Compound / mix fertilizer, can say the most fertilizer that is big housekeeping money is phyletic, it is compound fertilizer no matter, answer mix fertilizer, still be mix into mixes fertilizer (BB is fat) , there must be address of business of grade of specific and clear fertilizer title, brand, norms, clean content, nutrient content, production, phone and lot number, production on the bag that pack number of the card of license number, fertilizer that register and executive standard.
Country of of all kinds to packing the mark on bag to have where which country which country imports country of technology, where, what what international technology, with which research and development of courtyard of which scientific research, what what is efficient or complete nutrition, and have those who fight what disease to combat what insect is compound / mix fertilizer, put basically in the problem such as exaggerated conduct propaganda, ambiguous sale, have the suspicion that misdirect consumes, when everybody is bought, want to notice.
Current, come from national level say, the national level that compound fertilizer carries out is GBT 15063-2009, organic - the national level that inorganic compound fertilizer carries out is GBT 18877-2009, the national level that mix into mixes fertilizer to carry out is GB/T 21633-2008, to fertilizer outer packing the standard that implements on bag is not above state level, perhaps register card number and manufacturing licence without fertilizer date, or number of license number, the card that register is not total, everybody does not want to buy certainly.
In addition, can use " look, feel, burn, dissolve, taste, hear " 6 words part will be generalized simply differentiate a method.
Look: Fertilizer whether double deck is packed, whether does outer packing bag indicate the name that number of license of brand, production, agriculture uses company of total content of code name of the number that register, standard, nutrient and nutrient formula, production and address.
Feel: Catch half with the hand answer the rub that mix fertilizer is kneaded, those who powder of a hoar has adhesion feeling stay to be quality on the hand admirable. Inferior answer mix powder of the fat much black that it is ash, without adhesion feeling, white crystal is not had inside grain.
Burn: Put in the burn on bright fire, nitrogen has ammoniac stink, blaze of potassium occurrence yellow, ammoniac stink is thicker, maize blaze is yellower, content is higher, it is conversely inferior answer mix fertilizer.
Dissolve: High grade answer the water-solubility that mix fertilizer is better, the majority can be deliquescent, although have a few precipitation pettier also. And inferior answer mix fat difficult dissolve at water, residual and coarse and hard.
Taste: To gules grain contain potassium answer Hefei to be able to be tasted, quality goods fertilizer has saline taste, and general and sham fertilizer does not have saline taste.
Hear: Compound fertilizer does not have peculiar smell generally speaking (organic - inorganic answer mixes fat except) , if have peculiar smell, it is inferior answer mix fertilizer.
4, delay accuses commentate fat quality actors or actress bad identifies
1. will accuse commentate in the glass that fertilizer puts in Cheng Manshui, gently agitate a few minutes, accuse commentate fertilizer criterion won't be deliquescent, and water quality is clear, without foreign matter, there is bleb to appear all round grain.
2. will shuck of crust accuse commentate fertilizer is put in water, can dissolve more quickly, if shuck crust indiscerptible, it is inferior fertilizer or it is false fertilizer.
If 3. is put in water to accuse commentate fat decolour, water quality is cloudy and the belt is lubricious, the specification is copy risks a product, accuse truly commentate the film outside fertilizer is not of decolour.
Consumer of vast rural area must arrive when buying manure the fixed place, distribute site that dimensions negotiates credit is bought. Above is only the most intuitionistic with the simplest identifying; If want to understand content of the nutrient in fertilizer well and truly, chemical fertilizer of divisional true and false, the room of chemical fertilizer of earthy fertilizer station that had better send place fertilizer has assay identification.
5, does delay accuse commentate does fat true and false discern how?
Delay accuses commentate fertilizer is to pass commonly in film of the biscuit outside chemical fertilizer grain, come to those who control nutrient release rate, achieve slow down nutrient to release the purpose of rate with this. Accordingly, delay accuses commentate fat outside film often is colored. Current, the delay that the market sells accuses commentate fat majority is mixed with common fertilizer mix into, grow in crop so early days offers nutrient by common fertilizer, to the later period in growing, basically rely on delay to accuse commentate fertilizer offers nutrient.
Open delay to accuse commentate after the fat bag that pack, can take 100 fertilizer randomly, count the number of chemical fertilizer bead that brings facial expression, if take the grain of color to exceed 15, demonstrative delay accuses commentate fat content is achieved 15% , belong to eligible product. If short of, unqualified.
In the light of undesirable manufacturer takes common fertilizer the circumstance that intended coloring pretends to be delay to accuse fertilization, can put fertilizer to the bubble in water, normally dye is met in water fade, and eligible delay accuses commentate fat coating is won't of fade.
Different crop is had different growth period and rule needing fertilizer, delay accuses commentate fat development direction is special change. The delay that waits for crop in the light of corn, cotton, paddy accuses commentate fat, release cycle to be in 3 two months.
Accuse for farther appraisal delay commentate fat quality, delay can be boiled to accuse in boiled water commentate fat. If release cycle,accuse in the delay of 3 two months commentate fat, release entirely inside half hour, demonstrative delay accuses commentate quality is general; If only one part is released, explain quality is OK.
If time allows, also can accuse delay commentate fertilizer is in 9 weeks in cold water on bubble, look release a circumstance. If release cycle,accuse in the delay of two months commentate fat, half month releases 1/4 left and right sides, belong to eligible product.
Current, use delay to accuse commentate the summerly corn area that fertilizer has seed manure is sowed together is larger and larger, a lot of farmers think, if 78 month rainfall is much, can bring about delay to accuse commentate fertilizer is released ahead of schedule, lose delay commentate the effect. This is an understanding error.
A large number of experiments prove, the delay after coating accuses commentate fat, no matter be the soil with the soil in water content moderate or overmuch moisture, nutrient releases rate almost identical. Rain much, can affect fertilizer efficiency, basically be nutrient has not been absorbed by crop, go along with current, perhaps issue ooze to arrive underground. Influence delay accuses commentate two when fertilization nutrient releases main factors are temperature and moisture, in corn field, wanting soil only is not special drought, won't affect release rate.
Above is the property of a few common chemical fertilizer and judgement method, the hope is helpful to everybody. Should begin immediately summer planted, everybody is buying chemical fertilizer to wait farming endowment when, besides buy to normal door inn, the product that chooses big company, lest be deceived. Additional, ask for even buy a certificate accordingly, so that appear in the future,oneself legitimate rights and interests can be safeguarded when the problem. (civil / network)
Click " cropland stewards, cultivate management and produce to trade platform " , can [free] use. Cropland chamberlain solves a farmer technically to grow difficult problem, open market for produce!
