CN115490552A - Lanthanum-containing macroelement water-soluble fertilizer and preparation method and application thereof - Google Patents
Lanthanum-containing macroelement water-soluble fertilizer and preparation method and application thereof Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 57
- 229910052746 lanthanum Inorganic materials 0.000 title claims abstract description 45
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title description 5
- 241000209140 Triticum Species 0.000 claims abstract description 43
- 235000021307 Triticum Nutrition 0.000 claims abstract description 43
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011591 potassium Substances 0.000 claims abstract description 30
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000002791 soaking Methods 0.000 claims abstract description 26
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract description 24
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 13
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims abstract description 13
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract description 12
- 239000004323 potassium nitrate Substances 0.000 claims abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004202 carbamide Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims description 17
- 239000011574 phosphorus Substances 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 238000010790 dilution Methods 0.000 claims description 8
- 239000012895 dilution Substances 0.000 claims description 8
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 8
- 239000003085 diluting agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 3
- 230000035784 germination Effects 0.000 abstract description 18
- 102000004169 proteins and genes Human genes 0.000 abstract description 4
- 108090000623 proteins and genes Proteins 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 26
- 238000002798 spectrophotometry method Methods 0.000 description 6
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003321 atomic absorption spectrophotometry Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 235000002949 phytic acid Nutrition 0.000 description 2
- 229940068041 phytic acid Drugs 0.000 description 2
- 239000000467 phytic acid Substances 0.000 description 2
- 230000007226 seed germination Effects 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009134 cell regulation Effects 0.000 description 1
- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002603 lanthanum Chemical class 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019419 proteases Nutrition 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/06—Coating or dressing seed
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a lanthanum-containing macroelement water-soluble fertilizer, and belongs to the technical field of water-soluble fertilizers. The liquid mass water-soluble fertilizer is prepared by taking lanthanum nitrate, potassium tripolyphosphate, urea and potassium nitrate as raw materials, dissolving the raw materials in water according to a certain proportion and adjusting the pH value. The lanthanum-containing macroelement water-soluble fertilizer is diluted by water and then used for soaking seeds of wheat, can promote the growth of wheat seedlings and the accumulation of dry substances of the wheat seedlings, and improves the seedling length, the seedling fresh weight, the root fresh weight, the germination rate, the germination index, the POD, CAT, soluble protein and soluble sugar content of the wheat seedlings.
Description
Technical Field
The invention belongs to the technical field of water-soluble fertilizers, and particularly relates to a lanthanum-containing macroelement water-soluble fertilizer, and a preparation method and application thereof.
Background
The right amount of rare earth elements can improve the vitality of the seeds and promote the germination of the seeds. Lanthanum is a common rare earth element, has small ionic radius and active chemical property, and can improve the germination and vitality of seeds and promote the growth of seedlings and the accumulation of dry matters of the seedlings at a certain concentration. However, the single element lanthanum is used for seed soaking, the growth promoting effect on plants is not very ideal, and in order to improve the seed soaking effect, specific nutrient elements or certain active substances are usually added into water. For example, the rare earth-chitosan oligosaccharide complex (La) was studied by Congbay et al 3+ COS) effect of seed soaking on the germination of rice seeds. The results show that: 10-750 mg/LLa 3+ COS treatment can improve the vitality, germination percentage and germination index of rice seedsThe activity index and the dry weight of the seedlings are increased along with the increase of the concentration, and the activities of protease, amylase and lipase are increased, wherein, la is 500mg/L 3+ The best COS treatment effect (close to the CongYing, etc. the influence of the rare earth/chitosan oligosaccharide complex seed soaking on the activity of rice seeds and the activity of the enzyme during germination.2019). However, the lanthanum is matched with nitrogen, phosphorus and potassium nutrient elements for use, so that the seed soaking effect is improved, and no relevant report is found.
Disclosure of Invention
In view of the above, the invention aims to provide a lanthanum-containing macroelement water-soluble fertilizer for wheat seed soaking, which is developed and provided aiming at the effect of nitrogen, phosphorus, potassium and lanthanum on seeds, and mainly solves the technical problem that the effective concentration of nitrogen, phosphorus, potassium and lanthanum is required, and meanwhile, the lanthanum-containing macroelement water-soluble fertilizer meets the requirement of agricultural industry standard NY/T1107-2020, namely N + P 2 O 5 +K 2 O is more than or equal to 400g/L, the content of water insoluble substances is less than or equal to 10g/L, and the content of biuret is less than or equal to 0.9 percent.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a lanthanum-containing macroelement water-soluble fertilizer, which takes water as a solvent and comprises macroelements and rare earth elements; the macroelements comprise nitrogen, phosphorus and potassium, and the total amount of nitrogen, phosphorus and potassium is N + P 2 O 5 +K 2 Calculated by O, is 400g/L to 500g/L; the rare earth element comprises lanthanum, and the content of lanthanum is 1.12 g/L-2.36 g/L.
Preferably, the lanthanum is derived from lanthanum nitrate, lanthanum chloride or lanthanum sulfate.
Preferably, the content of N in the water-soluble fertilizer is 250-300 g/L, and P 2 O 5 The content is 60 g/L-100 g/L, K 2 The O content is 70 g/L-110 g/L.
Preferably, the nitrogen is derived from urea and potassium nitrate, the phosphorus is derived from potassium tripolyphosphate, and the potassium is derived from potassium nitrate and potassium tripolyphosphate.
The invention also provides a preparation method of the lanthanum-containing macroelement water-soluble fertilizer, which comprises the steps of mixing the raw materials with water and then adjusting the pH value to 8.5-9.5.
The invention also provides application of the lanthanum-containing macroelement water-soluble fertilizer in wheat seed soaking, wherein the water-soluble fertilizer is diluted by 300-500 times to obtain a diluent, and wheat seeds are soaked in the diluent.
Preferably, each kilogram of wheat seeds is soaked in 0.5L to 2L of the aqueous fertilizer diluent for 8 to 20 hours.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, nitrogen in the lanthanum-containing macroelement water-soluble fertilizer is from urea and potassium nitrate, phosphorus is from potassium tripolyphosphate, and phosphorus is a component of phytic acid, and the phytic acid can promote seed germination and provide sufficient energy for the growth of the seeds; potassium is derived from potassium nitrate and potassium tripolyphosphate, and one of the important physiological effects of potassium is to enhance the regulation of cells to environmental conditions, and to some extent, to enhance the tolerance of seeds to various adverse conditions. Lanthanum is matched with urea, potassium nitrate and potassium tripolyphosphate according to a specific proportion to prepare the lanthanum-containing macroelement water-soluble fertilizer. The diluted lanthanum-containing macroelement water-soluble fertilizer is used for soaking wheat seeds, so that the activity of the wheat seeds is improved, the growth of seedlings is promoted, the physiological indexes such as seedling length, seedling fresh weight, root fresh weight, germination rate and germination index are improved, and the contents of POD, CAT, soluble protein and soluble sugar are improved.
Drawings
FIG. 1 shows the effect of water soluble fertilizers A, B and C on the growth of wheat seedlings at different concentrations;
FIG. 2 shows the influence of water-soluble fertilizers A, B and C on the fresh weight of wheat seedlings under different concentrations;
FIG. 3 shows the effect of water-soluble fertilizers A, B and C on the fresh weight of wheat roots at different concentrations;
FIG. 4 shows the effect of water-soluble fertilizers A, B and C on the germination rate of wheat at different concentrations;
FIG. 5 shows the effect of water soluble fertilizers A, B and C on wheat germination vigor at different concentrations;
FIG. 6 shows the effect of water soluble fertilizers A, B and C on wheat germination index at different concentrations;
figure 7 is a graph of the effect of water soluble fertilizers a, B, C on wheat POD at different concentrations;
FIG. 8 shows the effect of water soluble fertilizers A, B and C on wheat CAT at different concentrations;
FIG. 9 shows the effect of water soluble fertilizers A, B and C on soluble protein of wheat at different concentrations;
FIG. 10 is a graph of the effect of water soluble fertilizers A, B, C on wheat soluble sugar at different concentrations.
Detailed Description
The invention provides a lanthanum-containing macroelement water-soluble fertilizer, which takes water as a solvent and comprises macroelements and rare earth elements; the macroelements comprise nitrogen, phosphorus and potassium, and the total amount of nitrogen, phosphorus and potassium is N + P 2 O 5 +K 2 The O is 400g/L to 500g/L, preferably 437 g/L to 440g/L; the rare earth element comprises lanthanum, and the content of lanthanum is 1.12-2.36 g/L, preferably 1.30-1.80 g/L, and more preferably 1.59g/L.
In the invention, the lanthanum is derived from lanthanum nitrate, lanthanum chloride or lanthanum sulfate, and is preferably lanthanum nitrate.
In the invention, the content of N in the water-soluble fertilizer is 250-300 g/L, preferably 263-264 g/L; p is 2 O 5 The content is 60g/L to 100g/L, preferably 70g/L to 90g/L,79g/L to 80g/L, K 2 The O content is 70g/L to 110g/L, preferably 95g/L to 96g/L.
In the present invention, the nitrogen is derived from urea and potassium nitrate, the phosphorus is derived from potassium tripolyphosphate, and the potassium is derived from potassium nitrate and potassium tripolyphosphate.
The invention also provides a preparation method of the lanthanum-containing macroelement water-soluble fertilizer, which comprises the steps of mixing the raw materials with water, adjusting the pH value, and filtering to obtain the lanthanum-containing macroelement water-soluble fertilizer.
Preferably, the pH is adjusted to 8.5 to 9.5, more preferably to 9, with nitric acid.
The invention also provides application of the lanthanum-containing macroelement water-soluble fertilizer in wheat seed soaking, wherein the water-soluble fertilizer is diluted by 300-500 times, preferably 400 times, to obtain a diluent, and wheat seeds are soaked in the diluent.
Preferably, each kilogram of wheat seeds is soaked in 0.5L to 2L of the aqueous fertilizer diluent, preferably 1L; the soaking time is 8 to 20 hours, preferably 12 hours.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Weighing lanthanum nitrate La (NO) 3 ) 3 3.64g potassium tripolyphosphate K 5 P 3 O 10 200.25g urea CO (NH) 2 ) 2 573.91g, potassium nitrate KNO 3 20.28g of the above raw materials were dissolved in 461.92g of water and HNO was added 3 And adjusting the pH value of the system to 9 to obtain the lanthanum nitrate-containing macroelement water-soluble fertilizer A. Measuring lanthanum by atomic absorption method, la content of 1.59g/L, measuring nitrogen by titration after distillation, N content of 263.46g/L, measuring phosphorus by ultraviolet spectrophotometry, and measuring P by P 2 O 5 The content is 79.95g/L, and potassium is measured by atomic absorption spectrophotometry and is expressed as K 2 The content of O is 95.34g/L, N + P 2 O 5 +K 2 O =438.75g/L, 1.0g/L of water-insoluble content measured by gravimetric method, and 0.8g/L of biuret content measured by spectrophotometric method (<0.08％)。
Example 2
Weighing lanthanum nitrate La (NO) 3 ) 3 3.64g potassium tripolyphosphate K 5 P 3 O 10 200.25g of urea CO (NH) 2 ) 2 478.26g, potassium nitrate KNO 3 50.72g of the above raw materials were dissolved in 529.18g of water by HNO 3 And adjusting the pH value of the system to 9 to obtain the water-soluble fertilizer B containing the lanthanum nitrate and the major elements. Measuring lanthanum by atomic absorption method with La content of 1.57g/L, measuring nitrogen by titration after distillation, measuring phosphorus by ultraviolet spectrophotometry with N content of 219.51g/L, and measuring P by P 2 O 5 The content is 79.91g/L, potassium is measured by atomic absorption spectrophotometry, and K is used 2 The content of O is 109.88g/L, N + P 2 O 5 +K 2 O =409.30g/L, water-insoluble content of 0.9g/L measured by gravimetric method, biuret content of 0.7g/L measured by spectrophotometry (<0.07％)。
Example 3
Weighing lanthanum nitrate La (NO) 3 ) 3 3.64g potassium tripolyphosphate K 5 P 3 O 10 200.25g of urea CO (NH) 2 ) 2 434.78g of KNO 3 246.37g, dissolving the above raw materials in 450.96g of water in turn, and adding HNO 3 And adjusting the pH value of the system to 9 to obtain the water-soluble fertilizer C containing the lanthanum nitrate major element. Measuring lanthanum by atomic absorption method, measuring La content to be 1.58g/L, measuring nitrogen by titration method after distillation, measuring N content to be 199.82g/L, measuring phosphorus by ultraviolet spectrophotometry, and measuring P by P 2 O 5 The content is 79.93g/L, and potassium is measured by atomic absorption spectrophotometry and is expressed as K 2 The content of O is 199.89g/L, N + P 2 O 5 +K 2 O =479.64g/L, 1.1g/L of water-insoluble content measured by gravimetric method and 0.8g/L of biuret content measured by spectrophotometry (<0.08％)。
Experimental example 1 seed soaking effect test of water-soluble fertilizers A, B and C with different dilution times
The water-soluble fertilizers prepared in examples 1 to 3 were diluted 300 times, 400 times, and 500 times, respectively, and then wheat seeds were soaked in the dilution for 12 hours at a ratio of 1 kg wheat seeds to 1 kg wheat seeds in 1 liter of the dilution.
The culture dish is cleaned by distilled water and then is dried in an oven for 2 hours at the temperature of 30 ℃ for later use. The soaked wheat seeds are washed with distilled water for 3 times and spread on filter paper dipped with distilled water in a culture dish. 30 seeds are evenly placed in each culture dish, 3 groups of parallel experiments are arranged in each concentration gradient, 90 seeds are totally obtained, and meanwhile, a control experiment is carried out. Placing the culture dish filled with wheat seeds into an intelligent artificial climate incubator, setting the temperature at 25 ℃, carrying out natural humidity treatment without illumination, and dripping distilled water every day during the culture period to keep the filter paper moist. The germination number is counted and recorded every day (total statistics is 7 days), the seed germination and seedling growth conditions are observed, and the row numbers of various performance indexes, such as seedling length, seedling fresh weight, root fresh weight, germination rate, germination vigor, germination index, POD, CAT, soluble protein and soluble sugar content, corresponding to the seeds soaked in the 300-500 times dilution solution of the water-soluble fertilizer in the embodiments 1-3 are summarized in the table 1.
As can be seen from fig. 1 to 10, the seed soaking effect of the lanthanum-containing macroelement water-soluble fertilizer is better than that of the lanthanum-free macroelement water-soluble fertilizer and clear water in a certain concentration range. The maximum value of each performance index is mostly present in 400 times of dilution, and the small part is present in 300 times of dilution.
TABLE 1 sequence table for suitable times of seed soaking and optimal effect of three water-soluble fertilizers
The performance of 10 seed soaking indexes is integrated, and the effect of diluting the wheat seeds by 300-500 times of the lanthanum-containing macroelement water-soluble fertilizer A is better than that of the lanthanum-containing macroelement water-soluble fertilizer C. Wherein, the lanthanum-containing macroelement water-soluble fertilizer A has the best effect of diluting 400 wheat seeds.
Experimental example 2 seed soaking result experiment of different concentrations of lanthanum nitrate on wheat
The concentrations of lanthanum nitrate were set to 0, 10, 25, 50 and 100mg/L, respectively, and the other conditions were the same as in example 1, and Table 2 shows the results of soaking wheat seeds with lanthanum nitrate of different concentrations.
TABLE 2 seed soaking results of different concentrations of lanthanum nitrate on wheat
Experimental example 3 seed soaking results of wheat by lanthanum chloride with different concentrations
The concentrations of lanthanum chloride were set to 0, 10, 25, 50, 100mg/L, respectively, and the other conditions were the same as in example 1, and Table 3 shows the results of soaking wheat seeds with different concentrations of lanthanum chloride.
TABLE 3 seed soaking results of different concentrations of lanthanum chloride on wheat
Experimental example 4
The concentrations of lanthanum sulfate were set to 0, 10, 25, 50 and 100mg/L, respectively, and the other conditions were the same as in example 1, and Table 4 shows the results of soaking seeds of wheat with different concentrations of lanthanum sulfate.
TABLE 4 seed soaking results of different concentrations of lanthanum sulfate on wheat
As shown in tables 2-4, in the low concentration range, lanthanum nitrate, lanthanum chloride and lanthanum sulfate all have the promotion effect on wheat seed soaking, but the lanthanum salt concentration is too high, so that the germination and growth of wheat can be inhibited. The seed soaking effect of the lanthanum nitrate is superior to that of lanthanum chloride and lanthanum sulfate.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (7)
1. A lanthanum-containing macroelement water-soluble fertilizer takes water as a solvent and is characterized by comprising macroelements and rare earth elements; the macroelements comprise nitrogen, phosphorus and potassium; total amount of nitrogen, phosphorus and potassium in N + P 2 O 5 +K 2 Calculated by O, is 400g/L to 500g/L; the rare earth element comprises lanthanum, and the content of lanthanum is 1.12 g/L-2.36 g/L.
2. The lanthanum-containing macroelement water-soluble fertilizer according to claim 1, wherein the lanthanum is derived from lanthanum nitrate, lanthanum chloride or lanthanum sulfate.
3. The lanthanum-containing macroelement water-soluble fertilizer as claimed in claim 1, wherein the water-soluble fertilizer has an N content of 250-300 g/L and a P content of P 2 O 5 The content is 60 g/L-100 g/L, K 2 The O content is 70 g/L-110 g/L.
4. The lanthanum containing macroelement water soluble fertilizer according to claim 3, wherein the nitrogen is from urea and potassium nitrate, the phosphorus is from potassium tripolyphosphate and the potassium is from potassium nitrate and potassium tripolyphosphate.
5. The method for preparing a lanthanum-containing macroelement water-soluble fertilizer according to any one of claims 1 to 4, characterized in that the raw materials are mixed with water and then the pH is adjusted to 8.5 to 9.5.
6. Use of a lanthanum containing macroelement water soluble fertilizer in wheat seed soaking according to any one of claims 1 to 4, characterized in that the water soluble fertilizer is diluted 300 to 500 times to obtain a dilution, and wheat seeds are soaked in the dilution.
7. The use according to claim 6, wherein each kilogram of wheat seeds is soaked in 0.5L to 2L of the aqueous fertilizer diluent for 8 to 20 hours.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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