CN115259935A - Wheat compound fertilizer, wheat compound liquid fertilizer and application thereof - Google Patents
Wheat compound fertilizer, wheat compound liquid fertilizer and application thereof Download PDFInfo
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- CN115259935A CN115259935A CN202210717356.1A CN202210717356A CN115259935A CN 115259935 A CN115259935 A CN 115259935A CN 202210717356 A CN202210717356 A CN 202210717356A CN 115259935 A CN115259935 A CN 115259935A
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- 239000007788 liquid Substances 0.000 title claims abstract description 26
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Images
Classifications
-
- 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
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a wheat compound fertilizer, a wheat compound liquid fertilizer and application thereof, belonging to the technical field of agricultural fertilizers, wherein the compound fertilizer comprises the following components in parts by weight per kilogram of soil: 700 to 1000 parts of calcium nitrate, 40 to 50 parts of zinc sulfate, 100 to 400 parts of monopotassium phosphate, 100 to 300 parts of potassium chloride and 0.01 to 1.5 parts of aconitic acid. The compound fertilizer is added with aconitic acid on the basis of calcium nitrate and zinc sulfate, so that the nitrogen and zinc contents in wheat are obviously improved, the effectiveness of zinc in soil is also obviously improved, and the purpose of synergy is achieved. The compound fertilizer meets the nutritional requirements of wheat in the growth process through scientific and reasonable compatibility. According to the invention, aconitic acid is added under the regulation of nitrogen-zinc co-distribution, so that a new idea is provided for reasonable fertilization and promotion of plants to absorb zinc in soil.
Description
Technical Field
The invention relates to the technical field of agricultural fertilizers, in particular to a wheat compound fertilizer, a wheat compound liquid fertilizer and application thereof.
Background
Zinc (Zn) is one of the essential trace elements, and plays an extremely important role in the physiological and nutritional roles of human growth and development, including humoral immunity, cellular immunity, protein and nucleic acid synthesis, etc. (Zhu Panpan, etc., 2021). Zinc deficiency causes problems of decreased appetite and digestive function, growth and development retardation, brain dysfunction, decreased immunity, etc. in human body, especially in infants (Zheng Weibin, etc., 2021). Zinc is one of essential nutrient elements for plants, and the growth and development of crops are hindered due to the zinc deficiency of soil, so that the yield and the quality of agricultural products are obviously reduced. Wheat is known as one of three major food crops in the world and is an important food source for human body to intake zinc nutrition (Cakmak, 2017). However, the situation that the zinc intake of the people taking the wheat grains as the staple food is insufficient due to low zinc concentration of the wheat grains is common. The investigation result of the zinc content of the wheat grains shows that the zinc content of the wheat grains is in a variation range of 16-58 mg/kg, the mean value is only 30mg/kg (Huang Tingmiao and the like, 2021), and the zinc content is lower than the zinc bioaugmentation target value of the grains by 40-60 mg/kg, and the basic reason is mainly limited by the zinc supply level of soil (Cakmak et al, 2017). In addition, the zinc in the calcareous soil is low in effectiveness, and is not beneficial to the utilization of soil reserve nutrient resources by crops. Therefore, the effectiveness of the zinc in the soil is improved, the winter wheat is promoted to absorb the zinc in the soil (especially the calcareous soil zinc), the zinc content of grains is further improved, and the zinc-rich wheat grain zinc supplement method has important significance for reasonably supplementing dietary zinc nutrition for people.
Bioaugmentation to increase the zinc content of wheat grains by breeding or agronomic measures is considered to be the most promising, economical and effective means of zinc supplementation for humans (Velu et al, 2014). The effect of improving the yield of winter wheat and the zinc content of grains is very obvious when the zinc fertilizer is applied to soil and sprayed on leaf surfaces on the soil with zinc deficiency and extremely zinc deficiency (Cakmak et al, 2018 Signorell et al, 2019), but the effect on potential zinc deficiency soil is very limited.
Disclosure of Invention
The invention aims to provide a wheat compound fertilizer, a wheat compound liquid fertilizer and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a wheat compound fertilizer which comprises the following components in parts by weight:
700 to 1000 parts of calcium nitrate, 40 to 50 parts of zinc sulfate, 100 to 400 parts of monopotassium phosphate, 100 to 300 parts of potassium chloride and 0.01 to 1.5 parts of aconitic acid.
Preferably, the compound fertilizer comprises the following components in parts by weight:
800 to 900 parts of calcium nitrate, 42 to 49 parts of zinc sulfate, 150 to 350 parts of monopotassium phosphate, 150 to 250 parts of potassium chloride and 0.011 to 1.45 parts of aconitic acid.
Preferably, the nitrogen content in the calcium nitrate is more than or equal to 11.9 percent.
Preferably, the zinc content in the zinc sulfate is more than or equal to 21.5 percent.
The invention also provides the wheat composite liquid fertilizer: the wheat compound liquid fertilizer is prepared by mixing the compound fertilizer with water.
Preferably, the mass volume ratio of the compound fertilizer to water is 1g: 0.11-0.21L.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the zinc content of wheat.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the nitrogen content of wheat.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the effective zinc content of soil.
The invention has the following beneficial effects:
the invention provides a wheat compound fertilizer, a wheat compound liquid fertilizer and application thereof. The compound fertilizer meets the nutritional requirements of wheat in the growth process through scientific and reasonable compatibility. According to the invention, aconitic acid is added under the regulation of nitrogen-zinc co-distribution, so that a new idea is provided for reasonable fertilization and promotion of plants to absorb zinc in soil.
Drawings
FIG. 1 shows the contents of citric acid, aconitic acid and isocitric acid in each part of the winter wheat in the green turning period, wherein A is the citric acid content of the root system of the winter wheat in the green turning period; b is the citric acid content of the overground part of the winter wheat in the green turning period; c is the aconitic acid content of the root system of the winter wheat in the green turning stage; d is the aconitic acid content of the overground part of the winter wheat in the green turning period; e is the content of isocitric acid in the root system of the winter wheat in the green turning period; f is the content of isocitric acid on the overground part of the winter wheat in the green turning period;
FIG. 2 shows the activity of citrate synthase and aconitase at each part of the winter wheat at the green turning stage, A is the activity of citrate synthase at the root system of the winter wheat at the green turning stage; b is the activity of citrate synthase of the overground part of the winter wheat in the green turning period; c is activity of aconitase on the overground part of the winter wheat in the green turning stage;
FIG. 3 shows nitrogen contents of various parts of winter wheat in the green turning period and the mature period, wherein A is nitrogen content of root systems of the winter wheat in the green turning period; b is nitrogen content of the overground part of the winter wheat in the green turning period; c is the nitrogen content of the root system of the winter wheat in the mature period; d is nitrogen content of winter wheat stem leaves in the mature period; e is the glume nitrogen content of winter wheat in the mature period; f is a nitrogen content diagram of winter wheat grains in a mature period;
FIG. 4 shows the zinc content of each part of winter wheat in the green turning period and the mature period, wherein A is the zinc content of the root system of winter wheat in the green turning period; b is the zinc content of the overground part of the winter wheat in the green turning period; c is the zinc content of the root system of the winter wheat in the mature period; d is the zinc content of the stem leaves of winter wheat in the mature period; e is the zinc content of the glumes of the winter wheat in the mature period; f is a zinc content diagram of winter wheat grains in a mature period;
FIG. 5 shows the effective zinc content in the soil during the green turning period and the mature period of winter wheat, wherein A is the effective zinc content in the soil during the green turning period of winter wheat; b is a graph of effective zinc content in soil of winter wheat in a mature period.
Detailed Description
In the invention, researches find that the nitrogen-zinc co-application can promote winter wheat to absorb soil zinc, mainly because the nitrogen-zinc co-application can improve the effective zinc content of soil. Meanwhile, the invention researches the metabolic correlation of the nitrogen zinc co-application and the aconitic acid in the wheat body through the influence of the nitrogen zinc co-application on the citrate synthase, the aconitase activity, the citric acid, the aconitic acid and the isocitric acid content in the winter wheat body, and the result shows that the nitrogen zinc co-application regulates and controls the metabolism of the aconitic acid in the winter wheat body, improves the aconitic acid content and promotes the secretion of the aconitic acid outside roots. Therefore, the nitrogen-zinc co-application can improve the effective zinc content of the soil by promoting the content of the aconitic acid, and further promote the winter wheat to absorb the zinc and nitrogen in the soil.
Based on the above, the invention provides a wheat compound fertilizer, which comprises the following components in parts by weight:
700 to 1000 portions of calcium nitrate, 40 to 50 portions of zinc sulfate, 100 to 400 portions of monopotassium phosphate, 100 to 300 portions of potassium chloride and 0.01 to 1.5 portions of aconitic acid.
In the present invention, as a preferred embodiment, the compound fertilizer comprises the following components in parts by weight: 800 to 900 portions of calcium nitrate, 42 to 49 portions of zinc sulfate, 150 to 350 portions of monopotassium phosphate, 150 to 250 portions of potassium chloride and 0.011 to 1.45 portions of aconitic acid. In the invention, the application method of the wheat compound fertilizer is preferably that the compound fertilizer comprises the following components by mass per kilogram of soil: 0.7 to 1.0g of calcium nitrate, 40 to 50mg of zinc sulfate, 0.1 to 0.4g of monopotassium phosphate, 0.1 to 0.3g of potassium chloride and 10 to 1500 mu g of aconitic acid; further preferably, the compound fertilizer comprises the following components in mass per kilogram of soil: 0.8 to 0.9g of calcium nitrate, 42 to 49mg of zinc sulfate, 0.15 to 0.35g of monopotassium phosphate, 0.15 to 0.25g of potassium chloride and 11 to 1450 mu g of aconitic acid. In the present invention, among the calcium nitrates, those preferredThe nitrogen content is more than or equal to 11.9 percent, and the calcium nitrate is preferably Ca (NO)3)2·4H2And O. The preferable zinc content in the zinc sulfate is more than or equal to 21.5 percent, and the zinc sulfate is ZnSO4·7H2And O. The invention ensures the requirements of phosphorus and potassium of the winter wheat by adding the monopotassium phosphate and the potassium chloride into the compound fertilizer. According to the invention, the calcium nitrate, the zinc sulfate and the aconitic acid are added into the compound fertilizer, so that the effective zinc in soil can be obviously improved, the zinc content and the nitrogen content in wheat can be obviously improved, and the purpose of synergy can be achieved.
The invention also provides a wheat composite liquid fertilizer, which is prepared by mixing the composite fertilizer with water.
In the invention, the mass-volume ratio of the compound fertilizer to water is preferably 1g: 0.11-0.21L. As a preferred embodiment of the present invention, potassium dihydrogen phosphate is dissolved in water alone to avoid precipitation with calcium nitrate.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the zinc content of wheat.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the nitrogen content of wheat.
The invention also provides an application of the wheat compound fertilizer or the wheat compound liquid fertilizer in improving the effective zinc content of soil.
In the invention, the wheat compound fertilizer is applied before wheat seeding. The application method of the wheat compound fertilizer is not particularly limited, and the wheat compound fertilizer can be applied in a seed dressing mode, a seed soaking mode, a hole application mode, a furrow application mode, a spraying mode, a broadcasting mode or a drip irrigation mode. When the wheat compound fertilizer is applied, the nitrogen content in each kilogram of soil is preferably 0.2g, the zinc content in each kilogram of soil is preferably 10mg, and the aconitic acid content in each kilogram of soil is preferably 10-1000 mug. In the jointing stage of wheat, calcium nitrate [ Ca (NO) is added into each kilogram of soil3)2·4H2O，N≥11.9％]0.84g of topdressing nitrogen fertilizer. In the invention, after the wheat compound fertilizer is applied, the zinc in the wheat is obviously improvedNitrogen content and obviously improves the effective zinc content in the soil.
In the present invention, all the raw material components are commercially available products well known to those skilled in the art unless otherwise specified.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The compound fertilizer for the wheat comprises the following components in parts by mass:
Ca(NO3)2·4H2O 0.7g、ZnSO4·7H250mg of O, 0.4g of monopotassium phosphate, 0.1g of potassium chloride and 10 mu g of aconitic acid.
A preparation method of a wheat composite liquid fertilizer comprises the following steps: mixing the above Ca (NO)3)2·4H2O、ZnSO4·7H2Mixing O, potassium chloride, aconitic acid and 93.5mL of water uniformly, and mixing the monopotassium phosphate and 44mL of water uniformly to obtain the compound.
Example 2
The compound fertilizer for the wheat comprises the following components in parts by mass:
Ca(NO3)2·4H2O 1.0g、ZnSO4·7H2o40 mg, monopotassium phosphate 0.1g, potassium chloride 0.3g and aconitic acid 100 mu g.
A preparation method of a wheat composite liquid fertilizer comprises the following steps: mixing the above Ca (NO)3)2·4H2O、ZnSO4·7H2Mixing O, potassium chloride, aconitic acid and 281.4mL of water uniformly, and mixing the monopotassium phosphate and 21mL of water uniformly to obtain the potassium dihydrogen phosphate.
Example 3
The compound fertilizer for wheat comprises the following components in parts by mass:
Ca(NO3)2·4H2O 0.84g、ZnSO4·7H246.5mg of O, 0.29g of monopotassium phosphate, 0.17g of potassium chloride and 14.3 mu g of aconitic acid.
A preparation method of a wheat composite liquid fertilizer comprises the following steps: mixing the above Ca (NO)3)2·4H2O、ZnSO4·7H2Mixing O, potassium chloride, aconitic acid and 150mL of water uniformly, and mixing the monopotassium phosphate and 50mL of water uniformly to obtain the compound.
Example 4
The compound fertilizer for wheat comprises the following components in parts by mass:
Ca(NO3)2·4H2O 0.84g、ZnSO4·7H246.5mg of O, 0.29g of monopotassium phosphate, 0.17g of potassium chloride and 1430 mu g of aconitic acid.
A preparation method of a wheat composite liquid fertilizer comprises the following steps: mixing the above Ca (NO)3)2·4H2O、ZnSO4·7H2Mixing O, potassium chloride, aconitic acid and 150mL of water uniformly, and mixing the monopotassium phosphate and 50mL of water uniformly to obtain the compound.
Test example 1
1. Test material
The tested soil is loamy moisture soil, and the basic physicochemical properties of the soil are as follows: pH is 8.74, organic matter is 15.85g/kg, alkaline hydrolysis nitrogen is 98.32mg/kg, quick-acting phosphorus is 11.75mg/kg, quick-acting potassium is 67.96mg/kg, and effective zinc is 2.90mg/kg. The winter wheat variety to be tested is 'Zheng wheat 379'. The test site was located in the university of Henan agriculture Mao Zhuang scientific park, zhengzhou, henan, province.
2. Design of experiments
A total of 12 treatments were set at 2 nitrogen levels (0, 0.2 g/kg), 2 zinc levels (0, 10 mg/kg) and 3 aconitic acid levels (0, 10, 1000. Mu.g/strain), with 8 replicates of each treatment. The nitrogen fertilizer and the zinc fertilizer are respectively mixed with calcium nitrate [ Ca (NO)3)2·4H2O]And zinc sulfate (ZnSO)4·7H2O) is a fertilizer source. In order to ensure the phosphorus and potassium requirements of winter wheat, according to P2O50.15 g/kg soil, K20.20g of O is applied per kg of soil,respectively mixing with potassium dihydrogen phosphate (KH)2PO4) And potassium chloride (KCl) as a fertilizer source, the groups being specifically as follows:
control group 1: control group 1 was prepared by applying no nitrogen, zinc and aconitic acid, and calcium chloride [ CaCl ] per kg of soil before wheat seeding2·2H2O，CaCl2≥74％]0.51g of potassium dihydrogen phosphate (KH)2PO4，P2O5≥52％，K2O is more than or equal to 34 percent) 0.29g, potassium chloride (KCl, K)2O is more than or equal to 60 percent) of 0.17g, preparing a solution by using 150mL of clear water, and applying the solution to soil at one time, wherein the monopotassium phosphate is prepared into the solution by using 50mL of clear water alone to avoid forming precipitates with calcium chloride; applying calcium fertilizer in winter wheat jointing stage, and applying calcium chloride [ CaCl ] per kg of soil2·2H2O，CaCl2≥74％]0.51g of the fertilizer is prepared into solution by 150mL of clear water and applied to soil.
Control group 2: the control group 2 was 10. Mu.g/plant aconitic acid, no nitrogen and no zinc, and the control group 2 was different from the control group 1 in that 14.3. Mu.g of aconitic acid per kg of soil was further added to the control group 2 before wheat was sown, and the remaining steps were the same as those of the control group 1.
Control group 3: the control group 3 is applied with 1000 mug/plant of aconitic acid, no nitrogen and no zinc, and the difference between the control group 3 and the control group 1 is that 1430 mug of aconitic acid is added to each kilogram of soil before wheat is sowed in the control group 3, and the rest steps are the same as the control group 1.
Nitrogen application group 1: the nitrogen application group 1 is nitrogen application, zinc application and aconitic acid application, and calcium nitrate [ Ca (NO) is measured per kilogram of soil before wheat seeding3)2·4H2O，N≥11.9％]0.84g of potassium dihydrogen phosphate (KH)2PO4，P2O5≥52％，K2O is more than or equal to 34 percent) 0.29g, potassium chloride (KCl, K)2O is more than or equal to 60 percent) of 0.17g, preparing a solution by using 150mL of clear water and applying the solution to soil at one time, wherein the monopotassium phosphate is prepared into the solution by using 50mL of clear water alone to avoid forming precipitates with calcium nitrate; applying nitrogen fertilizer in winter wheat jointing stage, and applying calcium nitrate [ Ca (NO) per kg soil3)2·4H2O，N≥11.9％]0.84g of the fertilizer is prepared into solution by 150mL of clear water and applied to soil.
Nitrogen application group 2: the nitrogen application group 2 is nitrogen application and 10 mug/plant aconitic acid application, and zinc application is not performed, the difference between the nitrogen application group 2 and the nitrogen application group 1 is that 14.3 mug of aconitic acid is added in per kilogram of soil before wheat is sowed in the nitrogen application group 2, and the rest steps are the same as the nitrogen application group 1.
Nitrogen application group 3: the nitrogen applying group 3 is nitrogen applying and 1000 mug/plant aconitic acid applying, and no zinc applying, the difference between the nitrogen applying group 3 and the nitrogen applying group 1 is that 1430 mug of aconitic acid is added according to per kilogram of soil before wheat is sowed in the nitrogen applying group 3, and the rest steps are the same as the nitrogen applying group 1.
Zinc application group 1: the zinc applying group 1 is zinc applying group, nitrogen applying group and aconitic acid applying group, and calcium chloride [ CaCl ] is measured per kilogram of soil before wheat seeding2·2H2O，CaCl2≥74％]0.51g, zinc sulfate (ZnSO)4·7H2O, zn ≥ 21.5%), 46.5mg, potassium dihydrogen phosphate (KH)2PO4，P2O5≥52％，K2O is more than or equal to 34 percent) 0.29g, potassium chloride (KCl, K)2O is more than or equal to 60 percent) of 0.17g, preparing a solution by using 150mL of clear water, and applying the solution to soil at one time, wherein the monopotassium phosphate is prepared into the solution by using 50mL of clear water alone to avoid forming precipitates with calcium chloride; applying calcium fertilizer in winter wheat jointing stage, and applying calcium chloride [ CaCl ] per kg of soil2·2H2O，CaCl2≥74％]0.51g of the fertilizer is prepared into solution by 150mL of clear water and applied to soil.
Zinc application group 2: the zinc applying group 1 is zinc applying, 10 mug/plant aconitic acid applying and no nitrogen applying, and the zinc applying group 2 is different from the zinc applying group 1 in that 14.3 mug of aconitic acid is added into the zinc applying group 2 according to per kilogram of soil before wheat is sowed, and the rest steps are the same as the zinc applying group 1.
Zinc application group 3: the zinc applying group 3 is zinc applying, 1000 mug/plant aconitic acid applying and no nitrogen applying, and the difference between the zinc applying group 3 and the zinc applying group 1 is that 1430 mug of aconitic acid is added in per kilogram of soil before wheat is sowed in the zinc applying group 3, and the rest steps are the same as those in the zinc applying group 1.
Nitrogen and zinc application group 1: the nitrogen and zinc applying group 1 is zinc applying, nitrogen applying and aconitic acid applying inCalcium nitrate [ Ca (NO) per kg of soil before wheat seeding3)2·4H2O，N≥11.9％]0.84g, zinc sulfate (ZnSO)4·7H2O, zn ≥ 21.5%), 46.5mg, potassium dihydrogen phosphate (KH)2PO4，P2O5≥52％，K2O is more than or equal to 34 percent) 0.29g, potassium chloride (KCl, K)2O is more than or equal to 60 percent) of 0.17g, preparing a solution by using 150mL of clear water and applying the solution to soil at one time, wherein the monopotassium phosphate is prepared into the solution by using 50mL of clear water alone to avoid forming precipitates with calcium nitrate; applying nitrogen fertilizer in winter wheat jointing stage, and applying calcium nitrate [ Ca (NO) per kg soil3)2·4H2O，N≥11.9％]0.84g of the fertilizer is prepared into solution by 150mL of clear water and applied to soil.
Nitrogen and zinc application group 2: the group 2 for applying zinc, nitrogen and 10 mug/plant aconitic acid, the group 2 for applying zinc and nitrogen is different from the group 1 for applying zinc and nitrogen, the group 2 for applying zinc and nitrogen is characterized in that 14.3 mug of aconitic acid is added before wheat is sowed according to per kilogram of soil, and the rest steps are the same as the group 1 for applying zinc and nitrogen.
Nitrogen and zinc applying group 3: the nitrogen and zinc applying group 3 is zinc applying, nitrogen applying and 1000 mug/plant aconitic acid applying, the difference between the nitrogen and zinc applying group 3 and the nitrogen and zinc applying group 1 is that 1430 mug of aconitic acid is added in per kilogram of soil before wheat is sowed in the nitrogen and zinc applying group 3, and the rest steps are the same as the nitrogen and zinc applying group 1.
3. Influence of control group 1, nitrogen application group 1, zinc application group 1 and nitrogen and zinc application group 1 on citric acid, aconitic acid and isocitric acid content of winter wheat in vivo
The test adopts polyethylene plastic pots, each pot contains 7kg of soil, 20 seeds are sowed in each pot, and 10 seedlings are set after one week of sowing. Collecting partial root system and overground part of winter wheat in the green turning stage, immediately freezing in liquid nitrogen, and storing in an ultra-low temperature freezer at-80 deg.C for determining the contents of citric acid, aconitic acid and isocitric acid and the activities of citrate synthase and aconitase.
3.1 determination of citric acid, aconitic acid and isocitric acid
Weighing 100mg of winter wheat fresh sample into a 2mL centrifuge tube, adding 1mL of extracting solution (chloroform: methanol: water =1:2.5After 5min of shaking, 20000 Xg is centrifuged for 5min. The supernatant was transferred to a 2mL centrifuge tube and 400. Mu.L ddH was added2O, vortex 10s,12000rpm for 5min, then transfer the upper phase (water and methanol mixture, about 900. Mu.L) to a fresh centrifuge tube and determine the citric, aconitic and isocitric acid content using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The pretreatment and determination of the three organic acids were performed on the high resolution mass spectrometry platform of the university of Henan.
3.2 determination of citrate synthase Activity
Weighing fresh winter wheat sample 0.10g, adding 2mL extraction buffer (pH 7.3, containing 30mmol/L HEPES-NaOH, 10mmol/L DTT, 1mmol/L MgSO 2)40.5mmol/L EGTA, 0.5% (W/V) BSA, 0.5% (W/V) PVP and 10mmol/L cysteine, grinding into homogenate in ice bath, centrifuging at 10000 Xg at 4 deg.C for 10min, and collecting supernatant to determine enzyme activity. 100mL of the enzyme solution was added to 2mL of a reaction buffer solution (pH 9.0, containing 40mmol/L of LTris-HCl, 0.1mmol/L of DTNB, 80. Mu. Mol/L of acetyl-CoA), and the mixture was water-washed at 25 ℃ for 15min. 20mmol/L oxaloacetate was then added, the change in absorbance within 7min was immediately measured at 412nm in a spectrophotometer, A412 was recorded once per minute, and the reduction in oxaloacetate per unit time and the citrate synthase activity were calculated.
3.3 measurement of Aconitase Activity
Weighing fresh winter wheat sample 0.10g, adding 2mL extraction buffer (pH 7.4, 30mmol/L HEPES-NaOH, 25mmol/L imidazole, 1mmol/L EDTA, 2mmol/L MgCl)240mmol/L KCl, 0.1% (W/V) BSA, 1% (W/V) PVP, 2mmol/L DTT, 2mmol/L citric acid, 1mmol/LPMSF, 10% (W/V) glycerol), grinding in ice bath to homogenate, centrifuging at 4 deg.C at 10000 Xg for 10min, collecting supernatant, and determining enzyme activity. mu.L of the enzyme solution was added to 2mL of the reaction buffer solution (30 mmol/L Tris-HCl, pH 7.8), and the mixture was water-washed at 25 ℃ for 15min. Then 60mmol/L citric acid is added, the change of the absorbance value within 1min is immediately measured at 240nm of a spectrophotometer, A240 is recorded every 10s, and the reduction of the citric acid and the activity of the aconitase in unit time are calculated.
The results in figure 1 show that the nitrogen-zinc co-fertilization obviously improves the content of citric acid and aconitic acid in the root system and the overground part of the winter wheat (A-D in figure 1), obviously improves the content of isocitric acid in the root system of the winter wheat, and reduces the content of the isocitric acid in the overground part (E-F in figure 1).
As can be seen from FIG. 2, the nitrogen-zinc complex significantly improves the activity of citrate synthase (A-B in FIG. 2) in the root system and the overground part of winter wheat; the nitrogen zinc co-administration significantly improved the activity of aconitase in the aerial parts of winter wheat (C in fig. 2).
Influence of 4.12 different treatment groups on nitrogen and zinc contents of winter wheat and effective zinc content of soil
The test adopts polyethylene plastic pots, each pot is filled with 7kg of soil, 20 seeds are sowed in each pot, 10 seedlings are set after one week of sowing, the samples are respectively taken in the green turning period and the mature period, partial root systems and overground parts of winter wheat are collected in the green turning period, the winter wheat is dried to constant weight at 65 ℃ after being enzyme-deactivated at 105 ℃, and then the nitrogen and zinc contents are determined; collecting winter wheat root, stem leaf, glume and seed in the mature period, deactivating enzyme, drying, pulverizing, and determining nitrogen and zinc content; collecting soil samples in the green turning period and the mature period to determine the effective zinc content.
4.1 measurement of plant Nitrogen content
Weighing 0.20g of dried plant sample by using 5mL of H2SO4And 6 drops of H2O2Digesting, and measuring the nitrogen content by an automatic nitrogen determinator (BRAN LUEBBEAA3, germany).
4.2 determination of the Zinc content of plants
Weighing 1.0000g of dried plant sample, and adopting 5mL of HNO3∶HClO4(volume ratio 4: 1) and an atomic absorption spectrophotometer (900T, perkin Elmer, USA) to determine the zinc content.
4.3 determination of effective Zinc content in soil
Weighing 25g of air-dried soil sample sieved by a 20-mesh sieve, extracting by adopting 50mL of DTPA, and determining the effective zinc content of the soil by using an atomic absorption spectrophotometer (900T, perkin Elmer, USA).
As can be seen from FIG. 3, the nitrogen-zinc co-application (N + Zn) can significantly improve the nitrogen content of the root system and the overground part of the winter wheat in the green turning period no matter whether aconitic acid is added or not; under the condition of nitrogen-zinc co-application treatment, the nitrogen content of root systems and overground parts of the winter wheat in the green-turning period can be improved by adding 10 mu g/plant of aconitic acid (A-B in figure 3). For winter wheat in the mature period, under the addition level of three aconitic acids, nitrogen and zinc are applied in a matched mode, so that the nitrogen content of roots, stems, leaves, glumes and grains of the winter wheat can be remarkably improved; under the nitrogen-zinc co-application treatment, the nitrogen content of root systems, stem leaves, glumes and seeds is obviously improved by adding 10 mu g/plant of aconitic acid, and the nitrogen content of stem leaves is obviously improved by adding 1000 mu g/plant of aconitic acid (C-F in figure 3).
As can be seen from FIG. 4, under the addition level of three aconitic acids, the nitrogen-zinc co-application can obviously improve the zinc content of the root system and the overground part of the winter wheat in the green turning period; under the nitrogen-zinc co-application treatment, the zinc content of the root system and the overground part of the winter wheat in the green-turning stage can be improved by adding 10 mu g/plant of aconitic acid, and the zinc content of the root system of the winter wheat in the green-turning stage can be improved by adding 1000 mu g/plant of aconitic acid (A-B in the picture 4). Under the addition level of three aconitic acids, the zinc nitrogen is applied to obviously improve the zinc content of the roots, stems and leaves, glumes and seeds of winter wheat in the mature period; under the nitrogen-zinc co-application treatment, the addition of 10 mug/plant of aconitic acid significantly increases the zinc content of the roots, stems and leaves, glumes and grains of winter wheat in the mature period, and the addition of 1000 mug/plant of aconitic acid significantly increases the zinc content of the roots, stems and leaves of winter wheat in the mature period (C-F in figure 4).
As shown in figure 5, under the addition levels of three aconitic acids, the nitrogen-zinc co-application can obviously improve the effective zinc content of the soil in the green turning stage and the mature stage of the winter wheat; under the condition of nitrogen-zinc co-application treatment, the addition of 10 mug/plant of aconitic acid obviously improves the effective zinc content of the soil in the green turning stage and the mature stage, and the addition of 1000 mug/plant of aconitic acid obviously improves the effective zinc content of the soil in the mature stage (A-B in figure 5).
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 (9)
1. The wheat compound fertilizer is characterized by comprising the following components in parts by weight:
700 to 1000 portions of calcium nitrate, 40 to 50 portions of zinc sulfate, 100 to 400 portions of monopotassium phosphate, 100 to 300 portions of potassium chloride and 0.01 to 1.5 portions of aconitic acid.
2. The compound fertilizer according to claim 1, characterized in that the compound fertilizer comprises the following components in parts by weight:
800 to 900 parts of calcium nitrate, 42 to 49 parts of zinc sulfate, 150 to 350 parts of monopotassium phosphate, 150 to 250 parts of potassium chloride and 0.011 to 1.45 parts of aconitic acid.
3. The wheat compound fertilizer as claimed in claim 1 or 2, wherein the nitrogen content in the calcium nitrate is not less than 11.9%.
4. The wheat compound fertilizer as claimed in claim 1 or 2, wherein the zinc content in the zinc sulfate is not less than 21.5%.
5. A wheat compound liquid fertilizer, which is characterized in that the wheat compound liquid fertilizer is obtained by mixing the compound fertilizer of any one of claims 1 to 4 with water.
6. The wheat composite liquid fertilizer as claimed in claim 5, wherein the mass volume ratio of the composite fertilizer to water is 1g: 0.11-0.21L.
7. Use of the wheat compound fertilizer of any one of claims 1 to 4 or the wheat compound liquid fertilizer of claim 5 or 6 for increasing the zinc content of wheat.
8. Use of the wheat compound fertilizer of any one of claims 1 to 4 or the wheat compound liquid fertilizer of claim 5 or 6 for increasing the nitrogen content of wheat.
9. Use of the wheat compound fertilizer of any one of claims 1 to 4 or the wheat compound liquid fertilizer of claim 5 or 6 for increasing the available zinc content in soil.
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| CN1935750A (en) * | 2005-09-20 | 2007-03-28 | 刘家宝 | Anti-plant-virus fertilizer additivesand fertilizer containing them |
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| CN106278438A (en) * | 2015-05-18 | 2017-01-04 | 孙建和 | A kind of compound fertilizer being applicable to Semen Tritici aestivi |
| CN106278499A (en) * | 2015-05-18 | 2017-01-04 | 孙建和 | A kind of compound fertilizer being applicable to Semen Tritici aestivi |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935750A (en) * | 2005-09-20 | 2007-03-28 | 刘家宝 | Anti-plant-virus fertilizer additivesand fertilizer containing them |
| CN101492319A (en) * | 2009-02-27 | 2009-07-29 | 北京市农林科学院 | Special-purpose fertilizer for wheat and uses thereof |
| CN104355789A (en) * | 2014-10-16 | 2015-02-18 | 山东省农业科学院玉米研究所 | Foliar microelement fertilizer for increasing concentration of zinc in wheat grains and preparation method of foliar microelement fertilizer |
| CN106278438A (en) * | 2015-05-18 | 2017-01-04 | 孙建和 | A kind of compound fertilizer being applicable to Semen Tritici aestivi |
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