CN104541726A - Method for testing field nutrient release regulation of urea formaldehyde slow-release fertilizer - Google Patents
Method for testing field nutrient release regulation of urea formaldehyde slow-release fertilizer Download PDFInfo
- Publication number
- CN104541726A CN104541726A CN201510050354.1A CN201510050354A CN104541726A CN 104541726 A CN104541726 A CN 104541726A CN 201510050354 A CN201510050354 A CN 201510050354A CN 104541726 A CN104541726 A CN 104541726A
- Authority
- CN
- China
- Prior art keywords
- soil
- fertilizer
- release
- pipe
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 148
- 235000015097 nutrients Nutrition 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229920001807 Urea-formaldehyde Polymers 0.000 title abstract description 9
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 title abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 182
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 138
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 69
- 238000005070 sampling Methods 0.000 claims abstract description 12
- 230000012010 growth Effects 0.000 claims abstract description 8
- 239000004202 carbamide Substances 0.000 claims description 69
- -1 urea aldehyde Chemical class 0.000 claims description 68
- 230000003578 releasing effect Effects 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 241000209140 Triticum Species 0.000 claims description 13
- 235000021307 Triticum Nutrition 0.000 claims description 13
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 210000003608 fece Anatomy 0.000 claims description 8
- 239000010871 livestock manure Substances 0.000 claims description 8
- 238000010899 nucleation Methods 0.000 claims description 8
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000008635 plant growth Effects 0.000 claims description 4
- 230000003698 anagen phase Effects 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 240000008042 Zea mays Species 0.000 claims description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 claims description 2
- 238000003556 assay Methods 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 235000005822 corn Nutrition 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 244000005700 microbiome Species 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 235000015816 nutrient absorption Nutrition 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 244000037666 field crops Species 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to a method for testing the field nutrient release regulation of a urea formaldehyde slow-release fertilizer. The method comprises the following steps: respectively setting two groups of fertilizer soil tube and blank soil tube of a same number according to experiment requirements; adding the urea formaldehyde slow-release fertilizer and surface soil to be tested into each fertilizer soil tube; only adding surface soil into each blank soil tube; in the growth period of crops, confirming the sampling time and the sampling times according to specific experiment demands; taking out soil samples in the fertilizer soil tubes and the blank soil tubes; testing the valid nitrogen release rate or the nitrogen release activity rate of the urea formaldehyde slow-release fertilizer in soil, thereby judging the nutrient release situation of the urea formaldehyde slow-release fertilizer. Conditions such as the soil humidity, the temperature and the microorganisms in the environment where the urea formaldehyde slow-release fertilizer is used in the soil tubes are generally consistent to the crop growing environment, the practical fertilizer supply situating of a non-coated granular or powder urea formaldehyde slow-release fertilizer can be relatively well reflected through the valid nutrient release regulation tested by using the method, and scientific basis for evaluating the nutrient release regulation and judging whether the nutrient release and nutrient absorption of crops are synchronous is provided.
Description
One, technical field
The present invention relates to a kind of method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule.
Two, technical background
Whether the nutrient element releasing rule of slow-release or control-release fertilizer in field soil is evaluate the important means of slow-release or control-release fertilizer quality with Crop nutrient synchronised, and it more can reflect the actual conditions of nutrient supply than nutrients release method in Static Water.Slow-release or control-release fertilizer field nutrients release speed, accumulative total volume directly affect its nutrient supply situation, and then affect the quality of Crop nutrient situation and growth.Basic and the crop different phase Nutrient Absorption situation synchronised of its nutrients release speed of the slow-release or control-release fertilizer of high-quality, and the nutrients release total amount within crop whole vegetative period can not be less than 80%, otherwise, this slow-release or control-release fertilizer is just undesirable to nutrient controlled-release effect, can not reach the object of the abridged edition that well increases production and improves productivity.At present, the method of field test slow-release or control-release fertilizer nutrient element releasing rule mainly contains hydrostatic water culture, soil dissolution rate method, isotope method, mesh bag method etc., but above method is comparatively suitable for the mensuration of tunicary slow-release or control-release fertilizer nutrients release, and (the method cost had is very high, as isotope method), be not suitable for the graininess of non-coating or Powdered slow release fertilizer, as urea aldehyde slow-release fertilizer.Urea aldehyde slow release fertilizer reacts obtained organic microsolubility nitrogen slow release fertilizer under certain condition by urea and aldehydes, be slightly soluble in cold water, under water in soil and the effect of microorganism, slow releasing nitrogen wherein, the volatilization of nitrogen, leaching loss can be reduced and fix, its plant recovery of nutrient and effect of increasing production, higher than common nitrogenous fertilizer, are once used in a large number and are unlikelyly caused burning seedling, have good using value.Because urea aldehyde slow-release fertilizer finished product is generally in irregular graininess or Powdered, and mainly under edaphon effect decompose discharge nitrogen, if so its nutrients release supply situation in field soil will be measured, by general hydrostatic water culture, soil leaching, mesh bag method etc. can exist and stops that edaphon and urea-formaldehyde fertilizer produce and react, temperature and humidity conditions and field difference large, sampling determination process causes fertilizer loss, the nitrogen measured differs, and to establish a capital be the adverse effects such as available nutrient form, can not its nutrients release of Accurate Determining and nutrient supply situation.
Three, summary of the invention
For the deficiency of existing mensuration slow-release or control-release fertilizer field nutrients release method and technology, the invention provides a kind of method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule.
Measure a method for urea aldehyde slow-release fertilizer field nutrient element releasing rule, comprise the following steps:
(1) two groups of identical fertilizer soil pipes of quantity and blank soil pipe is set respectively according to test requirements document; Fertilizer soil pipe and blank soil pipe are the pvc pipe of the identical diameter 5 ~ 10 centimetres of specification, length 15 ~ 20 centimetres, and mark coding respectively with waterproof marking pen;
(2) on crop seeding and fertilizing same day, get the on-the-spot unmanured topsoil soils in field, cross 2 millimeters (10 orders) sieve;
Urea aldehyde slow release fertilizer 2 ~ 5 grams to be measured is added in every root manure material soil pipe, by urea aldehyde slow release fertilizer and topsoil soils mixing, be filled in fertilizer soil pipe, the two ends of every root manure material soil pipe are encased again with 80 ~ 120 object nylon mesh sheets, and tighten with thin nylon rope, drop out to prevent managing interior soil, moisture can't be hindered to enter in the interior soil of pipe.
In each fertilizer soil pipe, topsoil soils is all identical with urea aldehyde slow release fertilizer quantity to be measured, and should fill up fertilizer soil pipe, and the soil compactness after loading in every root manure material soil pipe is even, and identical with the elasticity of field topsoil soils;
In the native pipe of blank, only load the topsoil soils with fertilizer soil pipe equal number, do not add urea aldehyde slow release fertilizer, other operation is identical.
Measure the percent mass water content of described topsoil soils, according to earth weight in wet base and the water content of soil in loaded fertilizer soil pipe and blank soil pipe, calculate the soil dry ground weight in fertilizer soil pipe and blank soil pipe.
(3) in the side of crop seeding row, distance crops 10 ~ 50 centimetres, parallel two Tu Gou digging dark 10 ~ 40 centimetres, wide 15 ~ 20 centimetres, two ditch spacing are 0.5-1 rice; Wherein fertilizer soil pipe buried underground by a ditch, and blank soil pipe buried underground by another ditch, and the length of ditch enough should bury all soil pipes underground.By step 2) in the fertilizer soil pipe made and the native pipe of blank be placed on the bottom of two ditches respectively; Distance between the adjacent native pipe in same soil ditch, at 3-10 centimetre, is then carried out earthing according to elasticity identical with field soil and is filled and led up, and on native face, indicate the position that fertilizer soil pipe and the native pipe of blank bury in institute respectively, is convenient to promptly and accurately to find during post-sampling.
The time that soil loaded by fertilizer soil pipe and blank soil pipe should carry out with the crop seeding and fertilizing time simultaneously.
(4) during plant growth, in crop primary growth phase or separated in time section (also can need suitably to determine sampling time and number of times according to concrete test), the fertilizer soil pipe be embedded in field soil and blank soil pipe are taken out, fertilizer soil pipe and blank soil pipe respectively get 3 ~ 5 pipes at every turn at random, take back laboratory.
(5) soil in fertilizer soil pipe and blank soil pipe is taken out in time, air-dry, cross 2 mm sieve, measure urea aldehyde slow-release fertilizer effective nitrogen release rate or Nitrogen releasing activity rate in soil, judge the nutrients release situation of urea aldehyde slow-release fertilizer.
1. urea aldehyde slow-release fertilizer effective nitrogen release rate assay in soil:
The alkali-hydrolyzable nitrogen content of soil in the native pipe of fertilizer and the alkali-hydrolyzable nitrogen content of the interior soil of blank soil pipe is measured respectively by alkaline hydrolysis diffusion process, with the every one-phase of following formulae discovery use effective nitrogen rate that urea aldehyde slow-release fertilizer discharges (in this method urea aldehyde slow-release fertilizer transform after loss in native pipe few, can ignore):
In urea aldehyde slow-release fertilizer effective nitrogen release rate=(in the native pipe of fertilizer, alkali-hydrolyzable nitrogen content-blank soil of soil manages the alkali-hydrolyzable nitrogen content of interior soil) × soil pipe, soil dry ground weighs urea aldehyde slow-release fertilizer nitrogen total amount × 100% that ÷ applies
In crop growth period, the urea aldehyde slow-release fertilizer effective nitrogen release rate of the latter half deducts the urea aldehyde slow-release fertilizer effective nitrogen release rate of previous stage, is the urea aldehyde slow-release fertilizer effective nitrogen release rate in this stage.
According to the urea aldehyde slow-release fertilizer effective nitrogen release rate of the crop Different growth phases that measure and calculation goes out, in conjunction with Crop Nutrient Properties, the fertilizer evaluating urea aldehyde slow-release fertilizer is good and bad.
2. Nitrogen releasing activity rate:
Nitrogen releasing activity rate refers to that in urea aldehyde slow-release fertilizer, in certain phases-time, hot water soluble nitrogen accounts for the percentage of the total urea aldehyde slow-release fertilizer nitrogen applied, for evaluating the nitrogen release characteristic of urea-formaldehyde fertilizer.Be taken as fertilizer soil pipeclay earth and the blank soil pipeclay earth in thing vegetative period, in boiling water bath, measure the concentration of its hot water soluble nitrogen respectively, go out Nitrogen releasing activity rate according to following formulae discovery:
Urea aldehyde slow-release fertilizer nitrogen total amount × 100% that in Nitrogen releasing activity rate=(in fertilizer soil pipe in hot melt nitrogen concentration-blank native pipe hot melt nitrogen concentration) × soil pipe, the heavy ÷ of soil dry ground applies
In crop growth period, the Nitrogen releasing activity rate of the latter half deducts the Nitrogen releasing activity rate of previous stage, is the urea aldehyde slow-release fertilizer Nitrogen releasing activity rate in this stage.
Preferably, described step 1) in the diameter 6 ~ 7 centimetres of pvc pipe, long 20 centimetres.
Described step 3) in, when described crops are fruit tree, distance capable 50 centimetres of planting fruit trees, digs the ditch of dark 30 ~ 40 centimetres, wide 15 ~ 20 centimetres; Described crops be wheat, corn or vegetables time, distance capable 10 centimetres of crop-planting, dig the ditch of dark 10 ~ 15 centimetres, wide 15 ~ 20 centimetres.
Step 4) in, the pipe time of fetching earth is determined according to different crops, and when principle is crops fast growing period, sampling interval time is short, and when crop growth is slow, sampling interval time is long.Preferably, crops will sample each vegetative period; If according to regular intervals of time time sampling, then sample time is: non-protected ground crop is respectively March to May, every 2 weeks of September to November once, and June to August is every weekly, and every 4 weeks of February in December to the coming year once; Protectorate cultivation crop suitably adjusts according to plant growth feature and soil temperature; Determination period of the present invention is from crop seeding and fertilizing, until till crop maturity results.
Advantage of the present invention is:
1. determinator environment more tallies with the actual situation.
Moisture in urea aldehyde slow-release fertilizer nutrients release and environment, temperature height particularly microbe species quantity etc. is in close relations.The environment residing for urea aldehyde slow-release fertilizer in the present invention's soil pipe is as basic consistent with the environment facies of plant growth in conditions such as soil moisture, temperature, microorganisms; To graininess or pulverous urea aldehyde slow-release fertilizer of non-coating, the available nutrient release rule that this method measures more can reflect fertilizer actual conditions, for evaluating its nutrient element releasing rule and judging whether to provide scientific basis with Crop nutrient synchronism aspect, and water culture, mesh bag method are owing to contacting with edaphon not or having the reasons such as Nutrient water loss in mensuration process, be difficult to reach this ideal effect.
2. easy to operate, cost is low.
Compared with mesh bag method, isotope method, material, field mounting arrangements and the aspect such as sampling process, lab analysis chemical examination that the inventive method is used, more simple and easy to do, cost is also low.
Four, accompanying drawing explanation
Fig. 1 is the PVC soil pipe measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule;
In figure: 1 nylon wire; 2 native pipe numberings; 3PVC soil pipe; 4 nylon tie strings
The mixture (being directed to fertilizer soil to manage) of test soil used (being directed to blank soil pipe) or soil and urea aldehyde slow-release fertilizer is loaded as required in pipe.
Five, embodiment
Below in conjunction with embodiment, the present invention is done to the explanation of embodiment, but be not limited thereto.Urea aldehyde slow-release fertilizer used in example is that Wuzhoufeng Agricultural Technology Co., Ltd. produces, and Powdered, nitrogen content is 36.0%, and crop is wheat.
The concrete implementation step of example is as follows:
(1) prepare that diameter is 6 centimetres, length is the pvc pipe of 15 centimetres, quantity is 80, and wherein 40 pipe outer wall waterproof marking pens write numbering from F1 to F40, for loading soil and the process of urea aldehyde slow-release fertilizer as fertilizer soil pipe; Other 40 pipe outer wall waterproof marking pens write numbering from CK1 to CK40, only load soil as blank soil pipe.Prepare 100 object nylon mesh sheet 160 in addition, then prepare the nylon marline 160 of Perishing prevention function, for bundling the nylon mesh sheet encasing pvc pipe port.
(2) soil is prepared
On the same day of wheat cultivation fertilising, wheatland 0 ~ 15 centimetre of topsoil was selected at scene, field, crossed the sieve of 2 millimeters of sieve apertures (10 order), and mixing, soil moisture content is 15.0%, and total wet soil amount is 50 kilograms.
(3) field embedded device is made
First make the fertilizer soil pipe adding urea aldehyde slow-release fertilizer: according to the volume of topsoil soils unit weight size and pvc pipe, calculating every root manure material soil pipe needs the soil loaded to be 575 grams (amounting to dry ground 500 grams), every root manure material soil pipe takes urea aldehyde slow release fertilizer 3 grams again, after alleged soil and fertilizer mixing, all join in fertilizer soil pipe, limit Jia Tu limit compacting, make the elasticity of soil in fertilizer soil pipe even and identical with the elasticity of field topsoil soils, then encase the two ends of fertilizer soil pipe with ready gauze, and tighten with thin nylon rope.The fertilizer soil pipe that making 40 is so altogether.
Make 40 blank soil pipes again: only load in pipe and the native step 2 of managing identical amount of fertilizer) process after soil, do not add urea aldehyde slow-release fertilizer, other operation is identical.
(4) field embedded device
After Wheat Sowing finishes, in distance wheat capable side 10 centimeters, start to dig side by side dark 15 centimetres, wide 16 centimetres, the Liang Tiaogou of long 2.5 meters, place clay fertilizer pipe and blank tube respectively, the horizontal range of two ditches is 1 meter.By the fertilizer made soil pipe and the native pipe of blank respectively horizontal Tile be put into the bottom of ditch, in every bar soil ditch, adjacent native tube pitch is 5 centimetres, earthing is filled and led up, soil compactness is identical with land for growing field crops, sign board is plugged in face to soil respectively, be used to indicate the position of buried PVC soil pipe, be convenient to promptly and accurately to find during post-sampling.
(5) field trial sample is gathered
After wheat cultivation 1 day, the seeding stage, the early winter tillers phase, Wintering Period, period of seedling establishment, the shooting stage, heading stage, flowering stage, the pustulation period, harvest time, the PVC soil pipe be embedded in field soil is taken out, fertilizer soil pipe and blank soil pipe respectively get 4 pipes at every turn, take back laboratory.
(6) urea aldehyde slow-release fertilizer fertilizer situation is measured
Two kinds of native pipes take out all soil after fetching in time from native pipe, air-dry, cross 2 mm sieve, measure the alkali-hydrolyzable nitrogen in soil, according to formulae discovery urea aldehyde slow-release fertilizer available nutrient release rate (the results are shown in Table 1), judge the nutrients release situation of urea aldehyde slow-release fertilizer.
Computing formula:
Urea aldehyde slow-release fertilizer effective nitrogen release rate=(in the native pipe of fertilizer, alkali-hydrolyzable nitrogen content-blank soil of soil manages the alkali-hydrolyzable nitrogen content of interior soil) × 500 grams of ÷ 10
6÷ 3 × 36.0% × 100%
Urea aldehyde slow-release fertilizer effective nitrogen release rate during table 1 wheat growth
Shown by the determination data of table 1, from urea aldehyde slow-release fertilizer is manured into soil a few days ago, its nutrients release is comparatively slow, and along with passage of time, the decomposition of microorganism to urea aldehyde slow-release fertilizer is constantly carried out, nutrients release is accelerated to some extent, arrive overwintering season, because temperature is low, at the bottom of microbial activity, little to the decomposition of urea aldehyde slow-release fertilizer, nutrient release rate reduces; Spring in the coming year, from wheat period of seedling establishment, along with the rise of temperature, urea aldehyde slow-release fertilizer nutrients release is accelerated, until Wheat in Grain Filling Stage, keep higher nutrient release rate always, along with the decomposition of urea aldehyde slow-release fertilizer discharges, its supply quantity reduces, to wheat ripe harvest time, nutrient release rate reduces again, and last nitrogen adds up release rate and reaches 80.56%, from urea aldehyde slow-release fertilizer in wheat Nitrogen releasing analysis throughout the growing season, the basic and wheat of its nitrogen nutrient supply trend adapts to nitrogen nutrient demand.
Claims (3)
1. measure a method for urea aldehyde slow-release fertilizer field nutrient element releasing rule, it is characterized in that comprising the following steps:
1) two groups of identical fertilizer soil pipes of quantity and blank soil pipe is set respectively according to test requirements document; Fertilizer soil pipe and blank soil pipe are the pvc pipe of the identical diameter 5 ~ 10 centimetres of specification, length 15 ~ 20 centimetres, and mark coding respectively with waterproof marking pen;
2) on crop seeding and fertilizing same day, get the on-the-spot unmanured topsoil soils in field, cross 2 mm sieve;
Urea aldehyde slow release fertilizer 2 ~ 5 grams to be measured is added in every root manure material soil pipe, by urea aldehyde slow release fertilizer and topsoil soils mixing, be filled in fertilizer soil pipe, the two ends of every root manure material soil pipe are wrapped again with 80 ~ 120 object nylon mesh sheets, and tighten with thin nylon rope, drop out to prevent managing interior soil, moisture can't be hindered to enter in the interior soil of pipe;
In each fertilizer soil pipe, topsoil soils is all identical with urea aldehyde slow release fertilizer quantity to be measured, and should fill up fertilizer soil pipe, and the soil compactness after loading in every root manure material soil pipe is even, and identical with the elasticity of field topsoil soils;
In the blank native pipe of every root, only load the topsoil soils with fertilizer soil pipe equal number, do not add urea aldehyde slow release fertilizer to be measured, other operation is identical;
Measure the percent mass water content of described topsoil soils, according to earth weight in wet base and the water content of soil in loaded fertilizer soil pipe and blank soil pipe, calculate the soil dry ground weight in fertilizer soil pipe and blank soil pipe;
3) in the side of crop seeding row, distance crops 10 ~ 50 centimetres, parallel two Tu Gous digging dark 10 ~ 40 centimetre, wide 15 ~ 20 centimetre capable of proportion of crop planting, two native ditch spacing are 0.5-1 rice; Wherein a Tu Gou buries fertilizer soil pipe underground, and another Tu Gou buries blank soil pipe underground, and the length of Tu Gou enough should bury all soil pipes underground;
By step 2) in the fertilizer soil pipe made and the native pipe of blank be placed on the bottom of two Tu Gou respectively; Distance between the adjacent native pipe in same soil ditch, at 3-10 centimetre, is then carried out earthing according to elasticity identical with field soil and is filled and led up, and on native face, indicate the position that fertilizer soil pipe and the native pipe of blank bury in institute respectively, is convenient to promptly and accurately to find during post-sampling;
The time that soil loaded by fertilizer soil pipe and blank soil pipe should carry out with the crop seeding and fertilizing time simultaneously;
(4) during plant growth, test according to concrete the sampling time and number of times that need to determine, managed by the fertilizer soil be embedded in field soil and the taking-up of blank soil pipe, fertilizer soil pipe and the native pipe of blank respectively get 3 ~ 5 pipes at every turn at random;
(5) soil in fertilizer soil pipe and blank soil pipe is taken out in time, air-dry, cross 2 mm sieve, measure urea aldehyde slow-release fertilizer effective nitrogen release rate or Nitrogen releasing activity rate in soil, judge the nutrients release situation of urea aldehyde slow-release fertilizer;
1. urea aldehyde slow-release fertilizer effective nitrogen release rate assay in soil:
Measure the alkali-hydrolyzable nitrogen content of soil in the alkali-hydrolyzable nitrogen content of soil and blank soil pipe in fertilizer soil pipe by alkaline hydrolysis diffusion process respectively, use with the every one-phase of following formulae discovery the effective nitrogen rate that urea aldehyde slow-release fertilizer discharges:
In urea aldehyde slow-release fertilizer effective nitrogen release rate=(in the native pipe of fertilizer, alkali-hydrolyzable nitrogen content-blank soil of soil manages the alkali-hydrolyzable nitrogen content of interior soil) × soil pipe, soil dry ground weighs urea aldehyde slow-release fertilizer nitrogen total amount × 100% that ÷ applies
In crop growth period, the urea aldehyde slow-release fertilizer effective nitrogen release rate of the latter half deducts the urea aldehyde slow-release fertilizer effective nitrogen release rate of previous stage, is the urea aldehyde slow-release fertilizer effective nitrogen release rate in this stage;
According to the urea aldehyde slow-release fertilizer effective nitrogen release rate of the crop Different growth phases that measure and calculation goes out, in conjunction with Crop Nutrient Properties, the fertilizer evaluating urea aldehyde slow-release fertilizer is good and bad;
2. Nitrogen releasing activity rate:
Be taken as fertilizer soil pipeclay earth and the blank soil pipeclay earth in thing vegetative period, in boiling water bath, measure the concentration of its hot water soluble nitrogen respectively, go out Nitrogen releasing activity rate according to following formulae discovery:
Urea aldehyde slow-release fertilizer nitrogen total amount × 100% that in Nitrogen releasing activity rate=(in fertilizer soil pipe in hot melt nitrogen concentration-blank native pipe hot melt nitrogen concentration) × soil pipe, the heavy ÷ of soil dry ground applies
In crop growth period, the Nitrogen releasing activity rate of the latter half deducts the Nitrogen releasing activity rate of previous stage, is the urea aldehyde slow-release fertilizer Nitrogen releasing activity rate in this stage.
2. the method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule as claimed in claim 1, is characterized in that the diameter of described fertilizer soil pipe and blank soil pipe is 6 ~ 7 centimetres, long 20 centimetres.
3. the method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule as claimed in claim 1, when it is characterized in that described crops are fruit tree, Tu Gou distance capable 50 centimetres of planting fruit trees, dark 30 ~ 40 centimetres; Described crops be wheat, corn or vegetables time, Tu Gou distance capable 10 centimetres of proportion of crop planting, dark 10 ~ 15 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510050354.1A CN104541726B (en) | 2015-01-30 | 2015-01-30 | A kind of method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510050354.1A CN104541726B (en) | 2015-01-30 | 2015-01-30 | A kind of method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104541726A true CN104541726A (en) | 2015-04-29 |
| CN104541726B CN104541726B (en) | 2016-08-17 |
Family
ID=53059675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510050354.1A Expired - Fee Related CN104541726B (en) | 2015-01-30 | 2015-01-30 | A kind of method measuring urea aldehyde slow-release fertilizer field nutrient element releasing rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104541726B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875143A (en) * | 2016-04-13 | 2016-08-24 | 安徽省农业科学院土壤肥料研究所 | Testing method of field pipe planting fertilizer |
| CN109804747A (en) * | 2019-03-28 | 2019-05-28 | 河北农业大学 | Fertilizing method for slow release fertilizer of wheat |
-
2015
- 2015-01-30 CN CN201510050354.1A patent/CN104541726B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875143A (en) * | 2016-04-13 | 2016-08-24 | 安徽省农业科学院土壤肥料研究所 | Testing method of field pipe planting fertilizer |
| CN105875143B (en) * | 2016-04-13 | 2018-08-21 | 安徽省农业科学院土壤肥料研究所 | A kind of field pipe plants the test method of fertilizer |
| CN109804747A (en) * | 2019-03-28 | 2019-05-28 | 河北农业大学 | Fertilizing method for slow release fertilizer of wheat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104541726B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Evaluation of nitrogen balance in a direct-seeded-rice field experiment using Hydrus-1D | |
| Maeda et al. | Nitrate leaching in an Andisol treated with different types of fertilizers | |
| Röver et al. | Spatial heterogeneity within the plough layer: low and moderate variability of soil properties | |
| Tafteh et al. | Application of HYDRUS-1D model for simulating water and nitrate leaching from continuous and alternate furrow irrigated rapeseed and maize fields | |
| Kröbel et al. | Modelling water dynamics with DNDC and DAISY in a soil of the North China Plain: a comparative study | |
| Mloza-Banda et al. | Soil properties after conversion to conservation agriculture from ridge tillage in Southern Malawi | |
| Trout et al. | USDA-ARS Colorado maize water productivity data set | |
| Phiri et al. | Water balance and maize yield following improved sesbania fallow in eastern Zambia | |
| Macharia et al. | Soil greenhouse gas fluxes from maize production under different soil fertility management practices in East Africa | |
| Aguilera et al. | Initial and residual effects of organic and inorganic amendments on soil properties in a potato-based cropping system in the Bolivian Andean Highlands. | |
| Alley et al. | Nitrogen management for winter wheat: principles and recommendations | |
| Liu et al. | Spatial variability of soil microbial biomass carbon, nitrogen and phosphorus in a hilly red soil landscape in subtropical China | |
| CN109601282A (en) | The water integrated control of high yield facility Winter-Spring stubble tomato drip irrigation fertilizer and management method | |
| He et al. | Assessing the effects of manure application rate and timing on nitrous oxide emissions from managed grasslands under contrasting climate in Canada | |
| Van Asperen et al. | Properties of anthropogenic soils in ancient run-off capturing agricultural terraces in the Central Negev desert (Israel) and related effects of biochar and ash on crop growth | |
| Sommer et al. | Nitrogen dynamics and nitrous oxide emissions in a long-term trial on integrated soil fertility management in Western Kenya | |
| Payet et al. | Modelling the fate of nitrogen following pig slurry application on a tropical cropped acid soil on the island of Réunion (France) | |
| Gebre et al. | Effects of growth medium and water stress on soybean [Glycine max (L.) merr.] growth, soil water extraction and rooting profiles by depth in 1-m rooting columns | |
| Ju et al. | Interception of residual nitrate from a calcareous alluvial soil profile on the North China Plain by deep-rooted crops: a 15N tracer study | |
| CN104541726A (en) | Method for testing field nutrient release regulation of urea formaldehyde slow-release fertilizer | |
| CN204681875U (en) | A kind of field system measuring slow-release fertilizer nutrient element releasing rule | |
| Millner et al. | Foliar nutrients in Eucalyptus species in New Zealand | |
| CN106385851A (en) | In-situ restoration saline-alkali land vegetable planting method | |
| CN100380121C (en) | Method for discriminating organic agricultural products from conventional agricultural products by using nitrogen isotope index | |
| Macdonald et al. | Soil water deficit effects on soil inorganic nitrogen in alternate-furrow flood irrigated Australian cotton production systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |