CN108440139B - Anti-yellowing leaf fertilizer, application method and preparation method thereof - Google Patents
Anti-yellowing leaf fertilizer, application method and preparation method thereof Download PDFInfo
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- CN108440139B CN108440139B CN201810522085.8A CN201810522085A CN108440139B CN 108440139 B CN108440139 B CN 108440139B CN 201810522085 A CN201810522085 A CN 201810522085A CN 108440139 B CN108440139 B CN 108440139B
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 36
- 238000004383 yellowing Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 9
- 229930191978 Gibberellin Natural products 0.000 claims abstract description 37
- IXORZMNAPKEEDV-UHFFFAOYSA-N gibberellic acid GA3 Natural products OC(=O)C1C2(C3)CC(=C)C3(O)CCC2C2(C=CC3O)C1C3(C)C(=O)O2 IXORZMNAPKEEDV-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003448 gibberellin Substances 0.000 claims abstract description 37
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 30
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 30
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 26
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004202 carbamide Substances 0.000 claims abstract description 22
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 17
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims abstract description 17
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 17
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 17
- 235000019796 monopotassium phosphate Nutrition 0.000 claims abstract description 17
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims abstract description 12
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 229910052742 iron Inorganic materials 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 235000019441 ethanol Nutrition 0.000 claims description 5
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 241000220324 Pyrus Species 0.000 abstract description 10
- 235000021017 pears Nutrition 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002689 soil Substances 0.000 abstract description 6
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 244000144972 livestock Species 0.000 abstract description 3
- 240000001987 Pyrus communis Species 0.000 description 18
- 235000014443 Pyrus communis Nutrition 0.000 description 18
- 239000007921 spray Substances 0.000 description 10
- 235000013399 edible fruits Nutrition 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 244000088401 Pyrus pyrifolia Species 0.000 description 2
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 2
- 235000011572 Pyrus ussuriensis Nutrition 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000002366 mineral element Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 206010022971 Iron Deficiencies Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000003715 nutritional status Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
- C05F11/10—Fertilisers containing plant vitamins or hormones
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
The invention belongs to the technical field of agricultural cultivation, and particularly relates to an anti-yellowing leaf fertilizer and a preparation method thereof, wherein the anti-yellowing leaf fertilizer is prepared from the following components in percentage by weight: 0.05 to 0.3 percent of urea, 0.1 to 0.5 percent of monopotassium phosphate, 0.1 to 0.4 percent of ferrous sulfate, 0.3 to 0.8 percent of disodium ethylene diamine tetraacetate, 0.01 to 0.05 percent of gibberellin and the balance of water. The foliar fertilizer can effectively make the leaf surfaces of 'golden pears' suffering from the yellowing disease green again and promote the Fe in soil3+The absorption and utilization of the medicine are convenient, the cost is low, the effect is quick, and the medicine is harmless to human and livestock and has no pollution.
Description
Technical Field
The invention belongs to the technical field of agricultural cultivation, and particularly relates to an anti-yellowing leaf fertilizer and a preparation method thereof.
Background
China has broad breadth and more varieties of fruits, wherein pears are the more common fruits and the planting area is larger. As early as 2012, the cultivation area of Chinese pears reaches 108.9hm2The pear tree cultivation area is 70.0 percent, the yield is 1707.3 ten thousand tons, the total yield of the pear tree cultivation area reaches 69.0 percent of the total yield of the world, and the pear tree cultivation area is increased in recent years. The main production area of Chinese pears is mainly concentrated in the northwest sandy loam area, but in the northwest area and the yellow river ancient road area, the pH value of soil is generally 7.5-8.0, the soil is alkalescent, and iron in the soil is generally Fe3+The situation of (a) exists,the pear trees are difficult to be effectively absorbed and utilized. The long-time accumulation can cause the leaf yellowing of the pear tree, the growth of the pear tree suffering from the yellowing is hindered, the fructification of the pear tree is seriously influenced, and the great economic loss is caused. The golden pear is a variety introduced from abroad in China, and is deeply popular with the people due to tender and juicy pulp, high sugar content, high taste, fresh and sweet flavor, great fragrance and fresh and sweet flavor, but the main cultivation area is the yellow river old street area, and the phenomenon of iron deficiency is very serious in the cultivation process of the golden pear due to leaf surface yellowing, and the yield is reduced.
Therefore, the invention researches and develops the special anti-yellowing leaf fertilizer for the golden pears.
Disclosure of Invention
The foliar fertilizer can effectively make the leaf surfaces of 'golden pears' suffering from the yellowing disease green again and promote the Fe in soil3+The absorption and utilization of the medicine are convenient, the cost is low, the effect is quick, and the medicine is harmless to human and livestock and has no pollution.
The invention provides an anti-yellowing leaf fertilizer which is prepared from the following components in percentage by weight:
0.05 to 0.3 percent of urea, 0.1 to 0.5 percent of monopotassium phosphate, 0.1 to 0.4 percent of ferrous sulfate, 0.3 to 0.8 percent of disodium ethylene diamine tetraacetate, 0.005 to 0.04 percent of gibberellin and the balance of water.
Preferably, the anti-yellowing leaf fertilizer is prepared from the following components in percentage by weight: 0.1% of urea, 0.3% of monopotassium phosphate, 0.2% of ferrous sulfate, 0.5% of disodium ethylene diamine tetraacetate, 0.02% of gibberellin and the balance of water.
The application method of the anti-yellowing foliar fertilizer comprises the steps of spraying 80-100 kg/mu in the last ten days of 5 months, and spraying 1 time every 30 days; after 8 last ten days, spraying 1 time every 7-10 days.
The preparation method of the anti-yellowing foliar fertilizer comprises the following steps:
s1, weighing the following components in percentage by weight: 0.05 to 0.3 percent of urea, 0.1 to 0.5 percent of monopotassium phosphate, 0.1 to 0.4 percent of ferrous sulfate, 0.3 to 0.8 percent of disodium ethylene diamine tetraacetate, 0.01 to 0.05 percent of gibberellin and the balance of water, wherein the urea is divided into 4 parts horizontally;
s2, heating and dissolving the disodium ethylene diamine tetraacetate and the ferrous sulfate weighed in the S1 by taking two parts of water in the S1 respectively, mixing the two parts of solution, and stirring uniformly to obtain a chelated iron solution;
and S3, dissolving the urea and the potassium dihydrogen phosphate weighed in the S1 in the other two parts of water in the S1 respectively, dissolving the gibberellin weighed in the S1 in absolute ethyl alcohol, sequentially adding the three solutions into the S2 chelated iron solution, stirring and heating to 50-60 ℃ until the ethyl alcohol is completely volatilized, and finally adjusting the pH value to 5.6-6.0 by hydrochloric acid to obtain the anti-yellowing leaf fertilizer.
Compared with the prior art, the invention has the beneficial effects that:
the foliar fertilizer can effectively make the leaf surfaces of 'golden pears' suffering from the yellowing disease green again and promote the Fe in soil3+The absorption and utilization of the pear tree nutrient solution can improve the fruit tree yield and the pear quality, and has the advantages of convenient use, low cost, quick response, no harm to people and livestock and no pollution; the foliar fertilizer can also be mixed with a bactericide or an insecticide for use, so that the cultivation management efficiency is improved.
Drawings
FIG. 1 shows that the spraying concentration of the FeSO is 0.05 percent4The blade re-green condition of (2);
FIG. 2 shows that the spraying concentration of the FeSO is 0.1%4Blade greening condition of
FIG. 3 shows that the spraying concentration of the FeSO is 0.15%4Blade greening condition of
FIG. 4 shows FeSO with a spraying concentration of 0.2% according to the invention4Blade greening condition of
FIG. 5 shows FeSO spray application according to the present invention4Influence on the Fe content in the blade;
FIG. 6 shows FeSO spray application according to the present invention4Influence on the N content in the leaves;
FIG. 7 shows FeSO spray application according to the present invention4Influence on K content in leaves;
FIG. 8 shows the leaf greening condition of the present invention after spraying gibberellin solution with a concentration of 0.005%;
FIG. 9 shows the leaf greening condition of the present invention after spraying gibberellin solution with a concentration of 0.01%;
FIG. 10 shows the leaf greening condition of the present invention after spraying gibberellin solution with a concentration of 0.02%;
FIG. 11 shows the leaf greening condition of the present invention after spraying gibberellin solution with a concentration of 0.04%;
FIG. 12 is a graph showing the effect of gibberellin spraying on the Fe content in leaves according to the present invention;
FIG. 13 is a graph showing the effect of gibberellin spray on the N content in leaves according to the present invention.
Wherein, in fig. 1-4, 8-11: A. 0d re-green case; B. 3d re-green case; C. 6d re-green case; D. 9d greenish case; E. 12d greenish-back situation.
Detailed Description
Several embodiments of the present invention are described in detail below with reference to fig. 1-13, but it should be understood that the scope of the present invention is not limited to the embodiments.
Example 1
An anti-yellowing foliar fertilizer is prepared from the following components in percentage by weight:
0.1% of urea, 0.3% of monopotassium phosphate, 0.2% of ferrous sulfate, 0.5% of disodium ethylene diamine tetraacetate, 0.02% of gibberellin and the balance of water.
The application method of the foliar fertilizer comprises the following steps: 80-100 kg/mu, beginning spraying in the last ten days of 5 months, and spraying for 1 time every 30 days; after 8 last ten days, spraying 1 time every 7-10 days.
The preparation method of the anti-yellowing foliar fertilizer comprises the following steps:
s1, weighing the following components in percentage by weight: 0.1% of urea, 0.3% of monopotassium phosphate, 0.2% of ferrous sulfate, 0.5% of disodium ethylene diamine tetraacetate, 0.02% of gibberellin and the balance of water, wherein the urea is divided into 4 parts horizontally;
s2, heating and dissolving the disodium ethylene diamine tetraacetate and the ferrous sulfate weighed in the S1 by taking two parts of water in the S1 respectively, mixing the two parts of solution, and stirring uniformly to obtain a light green precipitate-free chelated iron solution;
and S3, dissolving the urea and the potassium dihydrogen phosphate weighed in the S1 in the other two parts of water in the S1 respectively, dissolving the gibberellin weighed in the S1 in absolute ethyl alcohol, sequentially adding the three solutions into the S2 chelated iron solution, stirring and heating to 55 ℃, until the ethyl alcohol is completely volatilized, and finally adjusting the pH value to 5.8 by using hydrochloric acid to obtain the anti-yellowing leaf fertilizer.
Example 2
An anti-yellowing foliar fertilizer is prepared from the following components in percentage by weight:
0.05% of urea, 0.1% of monopotassium phosphate, 0.1% of ferrous sulfate, 0.3% of disodium ethylene diamine tetraacetate, 0.005% of gibberellin and the balance of water.
The application method of the foliar fertilizer comprises the following steps: 80-100 kg/mu, beginning spraying in the last ten days of 5 months, and spraying for 1 time every 30 days; after 8 last ten days, spraying 1 time every 7-10 days.
The preparation method of the anti-yellowing foliar fertilizer comprises the following steps:
s1, weighing the following components in percentage by weight: 0.05% of urea, 0.1% of monopotassium phosphate, 0.1% of ferrous sulfate, 0.3% of disodium ethylene diamine tetraacetate, 0.005% of gibberellin and the balance of water, wherein the urea is divided into 4 parts horizontally;
s2, heating and dissolving the disodium ethylene diamine tetraacetate and the ferrous sulfate weighed in the S1 by taking two parts of water in the S1 respectively, mixing the two parts of solution, and stirring uniformly to obtain a light green precipitate-free chelated iron solution;
and S3, dissolving the urea and the potassium dihydrogen phosphate weighed in the S1 in the other two parts of water in the S1 respectively, dissolving the gibberellin weighed in the S1 in absolute ethyl alcohol, sequentially adding the three solutions into the S2 chelated iron solution, stirring and heating to 50 ℃, until the ethyl alcohol is completely volatilized, and finally adjusting the pH value to 5.6 by using hydrochloric acid to obtain the anti-yellowing leaf fertilizer.
Example 3
An anti-yellowing foliar fertilizer is prepared from the following components in percentage by weight:
0.3% of urea, 0.5% of monopotassium phosphate, 0.4% of ferrous sulfate, 0.8% of disodium ethylene diamine tetraacetate, 0.04% of gibberellin and the balance of water.
The application method of the foliar fertilizer comprises the following steps: 80-100 kg/mu, beginning spraying in the last ten days of 5 months, and spraying for 1 time every 30 days; after 8 last ten days, spraying 1 time every 7-10 days.
The preparation method of the anti-yellowing foliar fertilizer comprises the following steps:
s1, weighing the following components in percentage by weight: 0.3% of urea, 0.5% of monopotassium phosphate, 0.4% of ferrous sulfate, 0.8% of disodium ethylene diamine tetraacetate, 0.04% of gibberellin and the balance of water, wherein the urea is divided into 4 parts horizontally;
s2, heating and dissolving the disodium ethylene diamine tetraacetate and the ferrous sulfate weighed in the S1 by taking two parts of water in the S1 respectively, mixing the two parts of solution, and stirring uniformly to obtain a light green precipitate-free chelated iron solution;
and S3, dissolving the urea and the potassium dihydrogen phosphate weighed in the S1 in the other two parts of water in the S1 respectively, dissolving the gibberellin weighed in the S1 in absolute ethyl alcohol, sequentially adding the three solutions into the S2 chelated iron solution, stirring and heating to 60 ℃, until the ethyl alcohol is completely volatilized, and finally adjusting the pH value to 6.0 by using hydrochloric acid to obtain the anti-yellowing leaf fertilizer.
Example 4
Exploring the optimal weight percentage of ferrous sulfate in the foliar fertilizer:
test materials: "Huangjin pear" in garden of yellow river and old passage in Xiao county of Anhui;
the test method comprises the following steps: and (2) preparing ferrous sulfate solutions with mass concentrations of 0.05%, 0.1%, 0.15% and 0.2%, randomly selecting 100 golden pears suffering from the yellowing, averagely dividing the golden pears into 4 groups, respectively spraying one ferrous sulfate solution with a concentration to each group, wherein the usage amount is the same as that recorded in the embodiment 1, sampling the leaves every three days before spraying and every three days after spraying, sampling for 5 periods, observing the degree of leaf greening and determining the content of mineral elements such as Fe, N and K in the leaves.
FIG. 1 shows FeSO with a spraying concentration of 0.05%4The leaf re-green state of (1), FIG. 2 shows FeSO with a spray concentration of 0.1%4The leaf re-green state of (1), FIG. 3 shows FeSO with a spray concentration of 0.15%4The leaf re-green state of (1), FIG. 4 shows FeSO with a spray concentration of 0.2%4The blade re-greening condition of (3 d) is not obvious from fig. 1-4; after treatment, the 6 th-day different treated leaf surfaces all have green-restoring spots, and the number of the green-restoring spots is increased along with the increase of the treatment concentrationIncreasing; the greening effect is obvious when the treated products are at 9d and 12 d; wherein 0.2% of ferrous sulfate has the best greening effect.
FIG. 5 shows FeSO spray4Influence on Fe content in leaves, FIG. 6 is FeSO spray4Influence on N content in leaves, FIG. 7 is FeSO spray4As can be seen from FIGS. 5-7, the contents of Fe, N and K in normal leaves are all significantly higher than those of etiolated leaves, after spraying ferrous sulfate solution, the contents of Fe, N and K are all increased, the nutrition status is obviously improved, and the Fe content is increased stably and is closest to the normal value when spraying 0.2% ferrous sulfate solution, so that the ferrous sulfate concentration is 0.2% as the optimum concentration. In fig. 5-7: z, normal leaf; H. yellowing of leaves; CL1, 0.05% FeSO4；CL2、0.1％FeSO4；CL3、0.15％FeSO4； CL4、0.2％FeSO4。
Example 5
Exploration of the optimal weight percentage of gibberellin:
test materials: yellow-spot disease of Huangjin pear in garden of yellow river of Xiao county of Anhui 15 years old;
the test method comprises the following steps: gibberellin solutions with mass concentrations of 0.005%, 0.01%, 0.02% and 0.04% are prepared respectively, 100 'golden pears' suffering from yellowing are randomly selected and averagely divided into 4 groups, each group is sprayed with one gibberellin solution with concentration respectively, leaves are sampled every three days before spraying and every three days after spraying, samples are sampled for 5 periods in total, the degree of leaf re-greening is observed, and the content of Fe and N mineral elements in the leaves is measured.
Fig. 8 shows the leaf greening condition of a gibberellin solution with a spraying concentration of 0.005%, fig. 9 shows the leaf greening condition of a gibberellin solution with a spraying concentration of 0.01%, fig. 10 shows the leaf greening condition of a gibberellin solution with a spraying concentration of 0.02%, fig. 11 shows the leaf greening condition of a gibberellin solution with a spraying concentration of 0.04%, as can be seen from fig. 8-11, the leaf greening condition of a gibberellin solution with a spraying concentration of 0.005% is not obvious, the greening condition is remarkably improved along with the continuous improvement of the gibberellin concentration, pear trees with a spraying concentration of 0.02% and a spraying concentration of 0.04% are completely greened, and when the using concentration of 0.02%, the yellowing plants have the integral branch greening condition, and the effect is the best.
FIG. 12 is the influence of gibberellin spraying on the Fe content in leaves, FIG. 13 is the influence of gibberellin spraying on the N content in leaves, and it can be seen from FIGS. 12-13 that the Fe and N contents in normal leaves are higher than those in etiolated leaves, and after gibberellin solution spraying, the Fe and N contents are both increased, and the nutritional status is obviously improved; and the N content of the gibberellin solution sprayed by 0.2% is stable in amplitude and is closest to a normal value, so that the ferrous sulfate with the concentration of 0.2% is the optimal concentration. In fig. 12-13: CK. Normal leaf blades; H. yellowing of leaves; t1, 0.005%; t2, 0.01%; t3, 0.02%; t4, 0.04%.
Example 6
The verification that the fruit setting quality of the pear trees is improved by the foliar fertilizer prepared by the invention is as follows:
test materials: yellow-spot disease of Huangjin pear in garden of yellow river of Xiao county of Anhui 15 years old;
the test method comprises the following steps: randomly selecting 100 golden pears with consistent yellowing degree, averagely dividing into 4 groups, and respectively using clear water and 0.02% Gibberellin (GA)3) The solution, the 0.2% ferrous sulfate solution and the foliar fertilizer prepared in example 1 were sprayed, and the usage amounts were the same as those described in example 1, and the results are shown in table 1:
TABLE 1 Pear fruit index comparison
As can be seen from table 1, the pear bearing fruits to which the foliar fertilizer of example 1 was applied had better indexes of solid content, sugar content, fruit weight, and yield than other groups except for the acid content, and therefore, the foliar fertilizer of the present invention could significantly improve the quality of golden pears.
It should be noted that in examples 1-3, the container has a sealing cap during heating, and a vent hole with a diameter of less than or equal to 1cm can be formed in the sealing cap in advance, so that the volatilization amount of water can be ignored.
It should be noted that the steps and methods adopted in the claims of the present invention are the same as those of the above-mentioned embodiments, and for the sake of avoiding redundancy, the present invention describes the preferred embodiments, but those skilled in the art can make other changes and modifications to these embodiments once they learn the basic inventive concept. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. The anti-yellowing foliar fertilizer is characterized by being prepared from the following components in percentage by weight:
0.1% of urea, 0.3% of monopotassium phosphate, 0.2% of ferrous sulfate, 0.5% of disodium ethylene diamine tetraacetate, 0.02% of gibberellin and the balance of water.
2. The application method of the anti-yellowing foliar fertilizer according to claim 1, wherein 80-100 kg/mu is sprayed every 30 days, beginning to be sprayed in the last ten days of 5 months, 1 time; after 8 last ten days, spraying 1 time every 7-10 days.
3. The preparation method of the anti-yellowing foliar fertilizer as set forth in claim 1, comprising the steps of:
s1, weighing the following components in percentage by weight: 0.1% of urea, 0.3% of monopotassium phosphate, 0.2% of ferrous sulfate, 0.5% of disodium ethylene diamine tetraacetate, 0.02% of gibberellin and the balance of water, wherein the urea is divided into 4 parts horizontally;
s2, heating and dissolving the disodium ethylene diamine tetraacetate and the ferrous sulfate weighed in the S1 by taking two parts of water in the S1 respectively, mixing the two parts of solution, and stirring uniformly to obtain a chelated iron solution;
and S3, dissolving the urea and the potassium dihydrogen phosphate weighed in the S1 in the other two parts of water in the S1 respectively, dissolving the gibberellin weighed in the S1 in absolute ethyl alcohol, sequentially adding the three solutions into the S2 chelated iron solution, stirring and heating to 50-60 ℃ until the ethyl alcohol is completely volatilized, and finally adjusting the pH value to 5.6-6.0 by hydrochloric acid to obtain the anti-yellowing leaf fertilizer.
Priority Applications (1)
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