CN111393208A - Zinc-rich rice liquid fertilizer and application method thereof - Google Patents
Zinc-rich rice liquid fertilizer and application method thereof Download PDFInfo
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- CN111393208A CN111393208A CN202010347689.0A CN202010347689A CN111393208A CN 111393208 A CN111393208 A CN 111393208A CN 202010347689 A CN202010347689 A CN 202010347689A CN 111393208 A CN111393208 A CN 111393208A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
- C05C5/02—Fertilisers containing other nitrates containing sodium or potassium nitrate
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
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Abstract
The invention discloses a zinc-rich rice liquid fertilizer and an application method thereof, wherein the zinc-rich rice liquid fertilizer comprises a liquid high-zinc fertilizer applied to roots of rice in a booting stage and/or a heading stage and a liquid high-zinc fertilizer sprayed to leaf surfaces of rice in a flowering stage and/or a filling stage; the liquid high-zinc fertilizer applied to roots of the rice in the booting stage and/or heading stage comprises organic acid and essential nutrient elements of zinc, nitrogen and potassium for crops; the liquid high-zinc fertilizer sprayed on the leaf surfaces in the flowering period and/or the filling period comprises amino acid and essential nutrient elements of zinc, manganese, boron, copper and magnesium for crops. The root application is applied to the roots of the rice along with irrigation water, and the dosage of the liquid high-zinc fertilizer stock solution per mu is 200 ml and 300 ml each time; the foliage spraying dilution multiple is 500-600 times, and the dosage of the liquid high-zinc fertilizer stock solution per mu is 60-90 ml each time. The zinc content (calculated by Zn in polished rice) of the rice grains is increased by more than 10 percent.
Description
Technical Field
The invention relates to a chemical fertilizer and an application method thereof, in particular to a zinc-rich rice liquid fertilizer and an application method thereof.
Background
Zinc is a trace mineral element essential to human physiology and plays a very important role in human life and health. At present, more than 20 hundred million people worldwide lack zinc, wherein the zinc deficiency accounts for 35% for children aged 0-5 years, and 60% of children in China generally lack zinc. According to the report of international rice research institute, the zinc content in polished rice is only 12mg/kg on average, the daily rice intake recommended by the Chinese academy of nutrition is about 400g, wherein the average zinc content is 4.8mg, and the daily dietary intake of zinc is far from 12-15mg recommended by the international food and agriculture organization and the world health organization. Therefore, the significance of improving the zinc content in rice grains is great. During the cultivation of the rice, nutrients (including zinc) are absorbed mainly by root hairs and leaves, zinc is absorbed by roots of the rice from a booting stage to a filling stage, and the zinc content in grains can be better increased by the zinc absorbed by the leaves of the rice in a flowering stage and the filling stage. At present, the zinc deficiency area of Chinese soil reaches 41.84%, zinc needs to be supplemented in a fertilizing way, the best zinc supplementing way is water and fertilizer integration, and three-dimensional fertilization of roots and leaves. Therefore, the development of the zinc-rich rice liquid fertilizer and the application method thereof are necessary.
Disclosure of Invention
Research shows that the accumulation of zinc in rice grains mainly comes from the absorption of zinc by roots and leaves from booting stage to filling stage, and the uppermost leaf (sword leaf) after heading is the most active organ for assimilation of rice and is an important source for grain filling. The zinc concentration in the rice grains can be obviously increased by applying zinc to the leaf surfaces in the flowering period and the filling period.
Researches also show that nitrogen can promote the absorption of the rice to zinc, potassium and zinc have good interaction, magnesium, boron, manganese and iron can improve the absorption performance of the rice to the zinc, and the increase of the iron content in a certain concentration range is beneficial to the absorption of the rice to the zinc.
The malic acid, succinic acid (succinic acid), citric acid and the like can better improve the ecological environment of the soil at the root of the rice and promote the absorption of the root hairs to the nutrient elements, and meanwhile, the citric acid has better chelating property to zinc and can effectively inhibit the fixation of phosphorus in the soil to the zinc.
Serine, proline and glycine have the functions of improving the activity of enzyme, enhancing the respiration of rice, promoting the metabolism of rice and the absorption of nutrient elements, and can also generate a chelating reaction with metal elements, wherein glycine is one of amino acids with better chelating effect on zinc.
The invention aims to solve the problem of dietary zinc supplementation, and aims to provide a zinc-rich rice liquid fertilizer and an application method thereof.
The zinc-rich rice liquid fertilizer comprises a liquid high-zinc fertilizer applied to roots of rice in a booting stage and/or a heading stage and a liquid high-zinc fertilizer sprayed to leaf surfaces of rice in a flowering stage and/or a filling stage.
The liquid high-zinc fertilizer applied to roots of the rice in the booting stage and/or heading stage comprises organic acid and essential nutrient elements of zinc, nitrogen and potassium for crops, wherein the content of the organic acid is more than or equal to 20 g/L, the content of Zn is more than or equal to 100 g/L, and the content of N + K is more than or equal to N + K2O is more than or equal to 100 g/L, and N is K2O＝1:(3-4)。
The organic acid comprises malic acid (C)4H6O5) Succinic acid (C)4H6O4) And citric acid (C)6H8O7·H2O), and the mass ratio of the malic acid to the succinic acid to the citric acid is 1 (1-1.5) to 6-8.
The liquid high-zinc fertilizer sprayed on the leaf surfaces in the flowering period and/or the grouting period comprises amino acid and essential nutrient elements of zinc, manganese, boron, copper and magnesium for crops, wherein the content of free amino acid is more than or equal to 20 g/L, the content of Mg is more than or equal to 2 g/L, the content of Zn + Mn + B + Fe is more than or equal to 100 g/L, and the weight ratio of B, Mn, Fe and Zn is 1:1 (1-1.5) and 16.
The free amino acid comprises serine (C)3H7NO3) Proline (C)5H9NO2) And glycine (C)2H5NO2) And the mass ratio of the serine to the proline to the glycine is 1:1 (6-8).
Wherein the organic acid is derived from malic acid (C)4H6O5) Or/and citric acid (C)6H8O7·H2O) or/and succinic acid (C)4H6O4) In terms of free organic acid (i.e. C)4H6O5+C6H8O7+C4H6O4) A total amount is counted; the zinc is derived from zinc sulfate heptahydrate or/and zinc sulfate monohydrate, and the content is calculated by zinc (Zn); the nitrogen is from urea or/and potassium nitrate, and the content is calculated by nitrogen (N); potassium is derived from potassium nitrate and/or potassium hydroxide and/or potassium sulfate, and is contained in potassium oxide (K)2O) meter; the amino acid is derived from glycine (C)2H5NO2) Or/and serine (C)3H7NO3) Or/and proline (C)5H9NO2) In amounts of free amino acids (i.e. C)2H5NO2+C3H7NO3+C5H9NO2) A total amount is counted; the manganese is from manganese sulfate heptahydrate or/and manganese sulfate monohydrate, and the content is calculated by manganese (Mn); boron is from borax or/and boric acid, and the content is calculated by boron (B); the iron is derived from ferrous sulfate heptahydrate, and the content is calculated by iron (Fe); the magnesium is magnesium nitrate hexahydrate or/and magnesium sulfate heptahydrate or/and magnesium sulfate monohydrate, and the content is calculated as magnesium (Mg).
The application method of the zinc-rich rice liquid fertilizer comprises the following steps:
applying the root-applied liquid high-zinc fertilizer to the root of the rice along with irrigation water in the booting stage and/or the heading stage of the rice, namely applying the fertilizer for 1 time along with the irrigation water in the booting stage, or applying the fertilizer for 1 time along with the irrigation water in the heading stage, or respectively applying the fertilizer for 1 time along with the irrigation water in the booting stage and the heading stage; the dosage of the liquid high zinc fertilizer stock solution per mu is 200 ml and 300 ml.
Carrying out foliage spraying on the liquid high-zinc fertilizer sprayed on the foliage in a flowering period and/or a grain filling period of the rice, namely spraying for 1 time in the flowering period, or spraying for 1 time in the grain filling period, or respectively spraying for 1 time in the flowering period and the grain filling period; 60-90 ml of liquid high-zinc fertilizer stock solution is used per mu each time, and the high-zinc fertilizer stock solution is diluted by 500 times and 600 times.
The technology of the invention improves the zinc content (calculated by Zn in polished rice) of rice grains to more than 10 percent.
Detailed Description
1. Raw material preparation
Malic acid (GB 1886.40-2015C4H6O5Not less than 99 percent) and citric acid (GB/T8269-2006C)6H8O7·H2O is more than or equal to 99 percent, wherein C6H8O7Not less than 90.5%), succinic acid (GB/T34686-4H6O4Not less than 99.5%), glycine (GB 25542-2H5NO2Not less than 98.5%), serine (commercially available, C)3H7NO3Not less than 98.5%), proline (commercially available, C)5H9NO2Not less than 99 percent), zinc sulfate heptahydrate (HG/T2326-containing 2015Zn not less than 22.06 percent), zinc sulfate monohydrate (HG/T2326-containing 2015Zn not less than 35.34 percent), ferrous sulfate heptahydrate (GB 29211-containing 2012 FeSO)4·7H2O is more than or equal to 99.5 percent, wherein Fe is more than or equal to 20.0 percent), and manganese sulfate monohydrate (HG/T2962-2010 Mn is more than or equal to 31.8 percent); borax (GB/T537-2009B is more than or equal to 10.77% of Na2B4O7·10H2O), boric acid (GB/T538-2006B is more than or equal to 17.32 percent), potassium nitrate (GB/T20784-2O is more than or equal to 46.0 percent, N is more than or equal to 13.5 percent) and potassium hydroxide (GB/T1919-2O is more than or equal to 75.4 percent) and potassium sulfate (GB 20406-2O is more than or equal to 50 percent, urea (GB/T2440 ≥ 2017N is more than or equal to 46.0 percent), magnesium nitrate (HG/T5358-3)2·6H2OMg is more than or equal to 98 percent, wherein Mg is more than or equal to 9.3 percent, N is more than or equal to 10.70 percent, magnesium sulfate heptahydrate (HG/T2680-4·7H2O is more than or equal to 99 percent), magnesium sulfate monohydrate (HG/T2680-2009Mg is more than or equal to 16.5 percent, and water is used for standby.
2. Product preparation process
Preparation of root-applied liquid high-zinc fertilizer
(1) Adding a certain amount of water into a heating reaction kettle;
(2) sequentially adding metered organic acid into water in a reaction kettle, stirring and dissolving at the temperature of 30-50 ℃ for 10-20min at intervals;
(3) adding metered zinc sulfate into the solution in the reaction kettle, stirring, dissolving and chelating at the temperature of 40-50 ℃ for 20-30 min;
(4) adding metered potassium nitrate into the solution in the reaction kettle, stirring and dissolving at the temperature of 30-50 ℃ for 10-20 min;
(5) adding metered potassium sulfate into the solution in the reaction kettle, stirring and dissolving at the temperature of 30-50 ℃ for 10-20 min;
(6) stopping heating, adding metered urea into the solution in the reaction kettle, and stirring until the urea is completely dissolved.
(7) Filtering to remove water insoluble substances to obtain root applied liquid high-zinc fertilizer for later use.
Preparation of liquid high-zinc fertilizer sprayed on leaf surface
(1) Adding a certain amount of water into a heating reaction kettle;
(2) adding measured amino acids into water in a reaction kettle in sequence, stirring and dissolving at 40-60 ℃ for 10-20 min;
(3) adding metered zinc sulfate into the solution in the reaction kettle, stirring, dissolving and chelating at 40-60 ℃ for 20-30 min;
(4) adding metered ferrous sulfate into the solution in the reaction kettle, stirring, dissolving and chelating at the temperature of 40-60 ℃ for 10-15 min;
(5) adding metered manganese sulfate into the solution in the reaction kettle, stirring and dissolving at the temperature of 30-50 ℃ for 10-20 min;
(6) adding the metered magnesium nitrate into the solution in the reaction kettle, stirring and dissolving at the temperature of 30-50 ℃ for 10-20 min;
(7) adding measured borax or boric acid into the solution in the reaction kettle, stirring and dissolving at 30-50 deg.C for 10-20 min;
(8) filtering to remove water insoluble substances to obtain the liquid high-zinc fertilizer sprayed on the leaf surfaces for later use.
3. Case of Fertilizer
3.1 case of liquid high Zinc Fertilizer applied from root 1
2.4g of malic acid, 2.5g of succinic acid, 18g of citric acid, 454g of zinc sulfate heptahydrate, 163.1g of potassium nitrate, 6.5g of urea and 610g of water, wherein the content of organic acid is 21.15 g/L, and the malic acid (C)4H6O5) Succinic acid (C)4H6O4) Citric acid (C)6H8O7·H2O)＝1:1.05:6.9；Zn＝100.15g/L；N+K2O100.03 g/L, and N: K2O＝1:3。
3.2 case of liquid high-Zinc Fertilizer applied in roots 2
Malic acid 2.2g, succinic acid 3.2g, lemon18g of acid, 454g of zinc sulfate heptahydrate, 149g of potassium nitrate, 23g of potassium sulfate and 614g of water, wherein the content of organic acid is 21.65 g/L, and malic acid (C)4H6O5) Succinic acid (C)4H6O4) Citric acid (C)6H8O7·H2O)＝1:1.46:7.48；Zn＝100.15g/L；N+K2O100.16 g/L, and N: K2O＝1:3.98。
3.3 case 3 of foliar-sprayed liquid high-Zinc Fertilizer
2.53g of proline, 2.54g of serine, 16g of glycine, 382g of zinc sulfate heptahydrate, 22g of magnesium nitrate hexahydrate, 26.4g of ferrous sulfate heptahydrate, 16.5g of manganese sulfate monohydrate, 48.9g of borax and 755g of water, wherein the content of free amino acid is 20.77 g/L, and serine (C)3H7NO3) Proline (C)5H9NO2) Glycine (C)2H5NO2) 1:1:6.3, Mg 2.05 g/L, Zn + Mn + B + Fe 100.07 g/L, and B: Mn: Fe: Zn ≈ 1:1: 16.
3.4 case 4 of foliar-sprayed liquid high-zinc Fertilizer
2.1g of proline, 2.1g of serine, 16.3g of glycine, 377g of zinc sulfate heptahydrate, 12.5g of magnesium sulfate monohydrate, 34g of ferrous sulfate heptahydrate and 16.5g of manganese sulfate monohydrate; 30g of boric acid and 770g of water.
Wherein the content of free amino acids is 20.20 g/L, and serine (C)3H7NO3) Proline (C)5H9NO2) Glycine (C)2H5NO2) 1:1:7.77, Mg 2.06 g/L, Zn + Mn + B + Fe 100.41 g/L, and B: Mn: Fe: Zn ≈ 1:1.3: 16.
4. Application case
4.1 application case 1
The implementation place is as follows: a paddy field of agriculture Limited, Utahur, Utakaihu, Huifeng, Anhui.
Designing a field block: in the same paddy field (about 12000 m)2) The ridge is built up in the middle, 8m × 8m (64 m) is separated2) The interval between each cell is not less than 8 m; 6 trial treatments were designed, with 2 replicates per treatment, with treatment 1 being a control group.
Rice variety: fengliyou xiang No. 1.
And (3) test treatment:
treatment 1: and (5) conventional water and fertilizer management. The average yield per mu is 650kg, and the zinc content of the polished rice is 17.7 mg/kg.
And (3) treatment 2: conventional water and fertilizer management + root application of fertilizer in booting stage case 1 (irrigation amount of 2.5m in each cell)3+20m L fertilizer) + foliar spray case 3 fertilizer (foliar spray of 3L clear water +6m L fertilizer per plot) at flowering stage, average yield per mu of 698kg, 7.4% increase than 1 treatment, polished rice Zn content of 19.8mg/kg, 11.9% increase than 1 polished rice Zn content.
And (3) treatment: conventional water and fertilizer management + root application of fertilizer in booting stage and heading stage of case 1 (irrigation quantity of 2.5m in each plot)3+28m L fertilizer) + foliar spray case 3 fertilizer (4.5L clear water +8m L fertilizer is sprayed on the foliar of each plot) at the flowering stage, the average per mu yield is 706kg, the yield is increased by 8.6% compared with 1, the zinc content of polished rice is 21.2mg/kg, and the zinc content is increased by 19.8% compared with 1 polished rice.
And (4) treatment: conventional water and fertilizer management + root application of fertilizer in booting stage and heading stage of case 1 (irrigation quantity of 2.5m in each plot)3+20m L fertilizer) + foliar spray case 3 fertilizer (3L clear water +6m L fertilizer per foliar spray of each plot each time) at flowering and grouting periods, the average per mu yield is 712kg, the yield is increased by 9.5% compared with 1, the zinc content of polished rice is 21.9mg/kg, and the zinc content is increased by 23.7% compared with 1 polished rice.
And (4) treatment 5: conventional water and fertilizer management + root application of fertilizer in booting stage and heading stage of case 1 (irrigation quantity of 2.5m in each plot)3+28m L fertilizer) + foliar spray case 3 fertilizer (3L clear water +6m L fertilizer per foliar spray of each plot each time) at flowering and grouting periods, the average per mu yield is 715kg, which is increased by 9.5% compared with 1, and the content of zinc Zn in polished rice is 23.2mg/kg, which is increased by 31.1% compared with 1 polished rice.
And (6) treatment: conventional water and fertilizer management + root application of fertilizer in booting stage and heading stage of case 1 (irrigation quantity of 2.5m in each plot)3+28m L fertilizer) + foliar spray case 3 fertilizer (4.8L clear water +8m L fertilizer per foliar spray of each plot each time) at flowering and grouting periods, the average per mu yield is 715kg, the yield is increased by 9.5% compared with the treatment 1, the zinc content of polished rice is 24.3mg/kg, and the zinc content is increased compared with the treatment 1 of polished rice37.3％。
4.1 application case 2
The implementation place is as follows: anhui Jinxianglian agriculture and forestry development Co., Ltd (Anhui Tung City).
Designing a field block: in the same paddy field (about 8000 m)2) The ridge is built up in the middle, 8m × 8m (64 m) is separated2) The interval between every two cells is not less than 8 m; 5 trial treatments were designed, with 2 replicates per treatment, with treatment 1 being a control group.
Rice variety: 900 parts of Y Liangyou;
and (3) test treatment:
treatment 1: and (5) conventional water and fertilizer management. The average yield per mu is 618kg, and the content of zinc Zn in polished rice is 14.1 mg/kg.
And (3) treatment 2: conventional water and fertilizer management + root application of pregnant period case 2 fertilizer (irrigation amount of 2.5m in each cell)3+20m L fertilizer) + foliar spray case 4 fertilizer (foliar spray of 3L clear water +6m L fertilizer per plot) at flowering and grouting periods, the average yield per mu of 649kg, 5.0% more than 1 treatment, the content of zinc Zn in polished rice is 19.1mg/kg, which is 35.46% more than 1 polished rice.
And (3) treatment: conventional water and fertilizer management + root application of pregnant period case 2 fertilizer (irrigation amount of 2.5m in each cell)3+28m L fertilizer) + foliar spray case 4 fertilizer (4.5L clear water +8m L fertilizer is sprayed on the foliar of each plot in flowering and grouting periods), the average per mu yield of 661kg, which is increased by 7.0% compared with the treatment 1, and the content of zinc Zn in polished rice is 19.8mg/kg, which is increased by 40.42% compared with the treatment 1.
And (4) treatment: conventional water and fertilizer management + root application of fertilizer in booting stage case 1 (irrigation amount of 2.5m in each cell)3+28m L fertilizer) + 4 fertilizer for foliar spraying in flowering and grouting periods (4.5L clear water +8m L fertilizer is sprayed on the foliar of each plot). The average yield per mu is 669kg, the yield is increased by 8.3% compared with the 1-treatment, and the zinc content in polished rice is 18.9mg/kg, which is increased by 34.04% compared with the zinc content in polished rice 1.
And (4) treatment 5: conventional water and fertilizer management + root application of pregnant period case 2 fertilizer (irrigation amount of 2.5m in each cell)3+28m L fertilizer) + foliar spray case 1 fertilizer (foliar spray of 3L clear water +6m L fertilizer per plot) at flowering and grouting periods, average yield per mu of 653kg, 5.7% increase than 1, polished rice zinc ZnThe content is 18.4mg/kg, which is 30.50 percent higher than that of 1 polished rice.
5. Discussion of the related Art
5.1 the two places account for 11 treatment cases, which show that the related liquid high-zinc fertilizer has good zinc-rich effect when being sprayed on the leaf surfaces of the root application, the flowering phase and/or the grouting phase in the booting phase and/or the heading phase; the zinc content of the polished rice is improved by more than 10 percent by applying the rice to roots for 1 time and spraying the rice to leaf surfaces for 1 time, and the zinc content of the polished rice is improved by more than 30 percent by applying the rice to roots for 2 times and spraying the rice to leaf surfaces for 2 times.
5.2 the above two-site treatment cases show that the average increase of the zinc content of the polished rice in the paddy field of the agriculture and forestry development Limited Anhui Jinxianglian is greater than the average increase of the zinc content of the polished rice in the paddy field of the agriculture Limited Anhui Tuhui Hui Feng, because the paddy field of the agriculture and forestry development Limited Anhui Jinxianglian is located in a zinc-rich soil area which is shown by the investigation of the Chinese geological academy of sciences. Therefore, the frequency of root application and foliage spraying can be selected according to the zinc content of the soil, and the soil with high zinc content can be applied by roots for 1 time or the zinc supplement of roots is not needed.
5.3 the root-applied liquid high-zinc fertilizer and the leaf-sprayed liquid high-zinc fertilizer are special fertilizers for enriching zinc in rice, and the designed technical indexes exceed the technical indexes of microelement water-soluble fertilizer (NY1428-2020) which is the agricultural industry standard of the people's republic of China, so that the liquid high-zinc fertilizer meets the commercialization requirements of novel fertilizers.
Claims (7)
1. A zinc-rich rice liquid fertilizer is characterized in that:
the zinc-rich rice liquid fertilizer comprises a liquid high-zinc fertilizer applied to roots of rice in a booting stage and/or a heading stage and a liquid high-zinc fertilizer sprayed to leaf surfaces of rice in a flowering stage and/or a filling stage;
the liquid high-zinc fertilizer applied to roots of the rice in the booting stage and/or heading stage comprises organic acid and essential nutrient elements of zinc, nitrogen and potassium for crops;
the liquid high-zinc fertilizer sprayed on the leaf surfaces in the flowering period and/or the filling period comprises amino acid and essential nutrient elements of zinc, manganese, boron, copper and magnesium for crops.
2. The liquid fertilizer for zinc-rich rice according to claim 1, wherein:
the organic acid content of the liquid high-zinc fertilizer applied to roots of the rice in the booting stage and/or heading stage is more than or equal to 20 g/L, Zn is more than or equal to 100 g/L, and N + K2O is more than or equal to 100 g/L, and N is K2O＝1:(3-4)。
3. The liquid fertilizer for zinc-rich rice according to claim 1, wherein:
the content of free amino acid in the liquid high-zinc fertilizer sprayed on the leaf surfaces in the flowering period and/or the grouting period is more than or equal to 20 g/L, the content of Mg is more than or equal to 2 g/L, the content of Zn + Mn + B + Fe is more than or equal to 100 g/L, and the ratio of B, Mn, Fe and Zn is 1:1 (1-1.5) and 16.
4. The zinc-rich rice liquid fertilizer according to claim 1 or 2, characterized in that:
the organic acid comprises one or more of malic acid, succinic acid and citric acid; the free amino acid comprises one or more of serine, proline and glycine.
5. The liquid fertilizer for zinc-rich rice according to claim 4, wherein:
the organic acid comprises malic acid, succinic acid and citric acid, and the mass ratio of the malic acid to the succinic acid to the citric acid is 1 (1-1.5) to 6-8.
6. The liquid fertilizer for zinc-rich rice according to claim 4, wherein:
the free amino acid comprises serine, proline and glycine, and the mass ratio of the serine to the proline to the glycine is 1:1 (6-8).
7. The application method of any one of the zinc-rich rice liquid fertilizers of claims 1-3, which is characterized in that:
the liquid high-zinc fertilizer applied to the roots of the rice is applied to the roots of the rice along with irrigation water in the booting stage and/or the heading stage of the rice, and the consumption of the stock solution of the liquid high-zinc fertilizer per mu is 200 ml and 300 ml each time;
the liquid high-zinc fertilizer sprayed on the leaf surfaces is sprayed on the leaf surfaces in the flowering period and/or the filling period of the rice, the dosage of the stock solution of the liquid high-zinc fertilizer per mu is 60-90 ml each time, and the stock solution is diluted by 500-fold and 600-fold for use.
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| CN116041109A (en) * | 2023-02-09 | 2023-05-02 | 苏州硒谷科技有限公司 | Zinc-rich grain special water-soluble fertilizer and preparation method and application thereof |
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| CN102050675A (en) * | 2010-11-26 | 2011-05-11 | 合肥工业大学 | Liquid type composite foliar fertilizer specially for paddy rice |
| US20160200636A1 (en) * | 2015-01-08 | 2016-07-14 | Nachurs Alpine Solutions | Plant Growth-Promoting Rhizobacteria Infused Fertilizer |
| CN109997631A (en) * | 2019-03-14 | 2019-07-12 | 深圳市芭田生态工程股份有限公司 | The implantation methods and rice rich in zinc of rice rich in zinc |
| CN110041124A (en) * | 2019-04-23 | 2019-07-23 | 浙江工业大学 | A kind of dedicated zinc-rich nutrient liquid of rice and its method for producing rice rich in zinc |
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| CN116041109A (en) * | 2023-02-09 | 2023-05-02 | 苏州硒谷科技有限公司 | Zinc-rich grain special water-soluble fertilizer and preparation method and application thereof |
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