CN113336589A - Fertilizer for improving quality of upper tobacco leaves and tobacco cultivation method - Google Patents
Fertilizer for improving quality of upper tobacco leaves and tobacco cultivation method Download PDFInfo
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- CN113336589A CN113336589A CN202110507689.7A CN202110507689A CN113336589A CN 113336589 A CN113336589 A CN 113336589A CN 202110507689 A CN202110507689 A CN 202110507689A CN 113336589 A CN113336589 A CN 113336589A
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- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 110
- 239000003337 fertilizer Substances 0.000 title claims abstract description 109
- 241000208125 Nicotiana Species 0.000 title claims abstract description 92
- 238000012364 cultivation method Methods 0.000 title claims abstract description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011591 potassium Substances 0.000 claims abstract description 24
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 24
- 244000061176 Nicotiana tabacum Species 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 241001494479 Pecora Species 0.000 claims abstract description 8
- 241000223259 Trichoderma Species 0.000 claims abstract description 8
- 210000003608 fece Anatomy 0.000 claims abstract description 8
- 239000010871 livestock manure Substances 0.000 claims abstract description 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 26
- 239000004323 potassium nitrate Substances 0.000 claims description 13
- 235000010333 potassium nitrate Nutrition 0.000 claims description 13
- 235000019750 Crude protein Nutrition 0.000 claims description 4
- 235000019784 crude fat Nutrition 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 238000002054 transplantation Methods 0.000 claims description 2
- 201000010099 disease Diseases 0.000 abstract description 15
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 239000002689 soil Substances 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 10
- 241000233647 Phytophthora nicotianae var. parasitica Species 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005904 alkaline hydrolysis reaction Methods 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000011282 treatment Methods 0.000 description 21
- 241000196324 Embryophyta Species 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 206010013911 Dysgeusia Diseases 0.000 description 3
- 238000013441 quality evaluation Methods 0.000 description 3
- 230000001953 sensory effect Effects 0.000 description 3
- 241000510678 Falcaria vulgaris Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000009418 agronomic effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000018343 nutrient deficiency Nutrition 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- 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
-
- 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
- A01G22/45—Tobacco
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Botany (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a fertilizer for improving the quality of upper tobacco leaves and a tobacco cultivation method, wherein the biological organic fertilizer of the fertilizer for improving the quality of the upper tobacco leaves comprises 70-80 parts by weight of cooked sheep manure, 20-30 parts by weight of high-carbon base fertilizer and 0.3-0.4 part by weight of trichoderma; the compound fertilizer comprises more than or equal to 8 percent of N and more than or equal to 8 percent of P in percentage by mass2O5And K of greater than or equal to 16%2O; the mass ratio of the potassium in the biological organic fertilizer to the potassium in the compound fertilizer is (1-2) to (3-4). The fertilizer for improving the quality of upper tobacco leaves can effectively improve the water content of soil, improve the contents of alkaline hydrolysis nitrogen, quick-acting phosphorus and quick-acting potassium, is beneficial to maintaining the high level of the content of the quick-acting nutrients in the soil, and can reduce the occurrence of diseases such as black shank, brown spot, mosaic disease and the like in the growth process of tobacco plants.
Description
Technical Field
The invention relates to the field of tobacco cultivation, in particular to a fertilizer for improving the quality of upper tobacco leaves and a tobacco cultivation method.
Background
The upper tobacco leaves of tobacco plants have the characteristics of thick leaves, poor filling property, large single leaf mass and the like, and have the defects of heavy harvesting impurity color, more plant diseases and insect pests and the like due to long leaf age and sufficient dry matter accumulation.
In order to improve the quality of the upper tobacco leaves, the upper tobacco leaves are harvested in a delayed harvesting mode, namely, the upper tobacco leaves are harvested at one time when the upper tobacco leaves reach a fully mature state, so that the tobacco leaves with long leaf age, sufficient dry matter accumulation, high maturity, loose tissue and full tobacco leaves are obtained. However, due to the late development of the cultivation matching technology in the production area, the upper tobacco leaves are often in nutrient deficiency when the upper tobacco leaves are not fully mature, the diseases such as black shank, mosaic disease, brown spot and the like are serious, and the quality of the upper tobacco leaves is difficult to improve.
In the process of planting tobacco plants, the quality of tobacco leaves is often improved by applying special fertilizers. And at present, no fertilizer for upper tobacco leaves exists.
Therefore, how to provide a tobacco fertilizer capable of effectively improving the quality of upper tobacco leaves becomes a technical problem which needs to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a tobacco fertilizer capable of effectively improving the quality of upper tobacco leaves.
According to a first aspect of the invention, there is provided a fertiliser for improving upper tobacco leaf quality.
The fertilizer for improving the quality of the upper tobacco leaves comprises a biological organic fertilizer and a compound fertilizer; wherein the content of the first and second substances,
the biological organic fertilizer comprises, by weight, 70-80 parts of cooked sheep manure, 20-30 parts of high-carbon base fertilizer and 0.3-0.4 part of trichoderma, wherein the cooked sheep manure comprises, by mass, 24-27% of dry matter, 4-5% of crude protein, 0.5-1% of crude fat, 8-12% of crude fiber, 4-6% of nitrogen-free extract, 0.2-0.4% of Ca, 0.7-0.8% of N and 0.45-0.6% of P2O5And 0.4-0.5% of K2O, the high-carbon base fertilizer comprises 1% or more of N and 1% or more of P in percentage by mass2O5And greater than or equal to 1% of K2O, the effective spore number of the trichoderma is at least 3 x 105；
The compound fertilizer comprises, by mass, greater than or equal to 8% of N and greater than or equal to 8% of P2O5And K of greater than or equal to 16%2O；
The mass ratio of the biological organic fertilizer to the potassium in the compound fertilizer is (1-2) to (2-3).
Optionally, the high-carbon base fertilizer comprises, by mass, 2% or more of N and 2% or more of P2O5And K of greater than or equal to 2%2O。
Optionally, the compound fertilizer comprises, by mass, greater than or equal to 10% of N and greater than or equal to 10% of P2O5And greater than or equal to 20% K2O。
According to a second aspect of the invention, there is provided a fertiliser for improving upper tobacco leaf quality.
The fertilizer for improving the quality of the upper tobacco leaves comprises a base fertilizer and an additional fertilizer, wherein the base fertilizer is the fertilizer for improving the quality of the upper tobacco leaves, the additional fertilizer is potassium nitrate, and the mass ratio of potassium nitrate to potassium in the base fertilizer is (1-2) to (4-5).
According to a third aspect of the present invention, there is provided a tobacco growing method for improving the quality of upper tobacco leaves.
The tobacco cultivation method for improving the quality of the upper tobacco leaves comprises the following steps:
the fertilizer for improving the quality of upper tobacco leaves is used as a base fertilizer, potassium nitrate is used as an additional fertilizer, and the mass ratio of potassium in the additional fertilizer to potassium in the base fertilizer is (1-2) to (3-4).
Optionally, the base fertilizer is applied by ditching and strip application, and the additional fertilizer is applied by hole application.
Optionally, the fertilizing time of the base fertilizer is 1-2 days before the tobacco plants are transplanted.
Optionally, the fertilizing time of the top dressing is the vigorous growth time of the tobacco plants.
Optionally, the top dressing is applied twice.
Optionally, the mass ratio of potassium in the additional fertilizer to potassium in the base fertilizer is 1.5: 3.5.
The fertilizer for improving the quality of upper tobacco leaves can effectively improve the water content of soil, improve the contents of alkaline hydrolysis nitrogen, quick-acting phosphorus and quick-acting potassium, is beneficial to maintaining the high level of the content of the quick-acting nutrients in the soil, and can reduce the occurrence of diseases such as black shank, brown spot, mosaic disease and the like in the growth process of tobacco plants. Moreover, the fertilizer for improving the quality of the upper tobacco leaves can effectively reduce the single leaf weight and the leaf thickness of the upper tobacco leaves after baking, improve the tissue structure and the physicochemical property, obviously improve the first-class tobacco proportion and the orange tobacco proportion, obviously enhance the appearance quality and the physical property of the tobacco leaves, ensure the fragrance to be full and full, and have comfortable mouthfeel and pure aftertaste.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
The present disclosure provides a fertilizer for improving the quality of upper tobacco leaves, comprising a bio-organic fertilizer and a compound fertilizer.
The biological organic fertilizer comprises, by weight, 70-80 parts of cooked sheep manure, 20-30 parts of high-carbon base fertilizer and 0.3-0.4 part of trichoderma, wherein the cooked sheep manure comprises, by mass, 24-27% of dry matter, 4-5% of crude protein, 0.5-1% of crude fat, 8-12% of crude fiber, 4-6% of nitrogen-free extract, 0.2-0.4% of Ca, 0.7-0.8% of N and 0.45-0.6% of P2O5And 0.4-0.5% of K2O, the high-carbon base fertilizer comprises more than or equal to 1 percent of N and more than or equal to 1 percent of P in percentage by mass2O5And greater than or equal to 1% of K2O, effective spore number of Trichoderma is at least 3 × 105。
The compound fertilizer comprises more than or equal to 8 percent of N and more than or equal to 8 percent of P in percentage by mass2O5And K of greater than or equal to 16%2O。
The mass ratio of the potassium in the biological organic fertilizer to the potassium in the compound fertilizer is (1-2) to (3-4).
The fertilizer for improving the quality of upper tobacco leaves can effectively improve the water content of soil, improve the contents of alkaline hydrolysis nitrogen, quick-acting phosphorus and quick-acting potassium, is beneficial to maintaining the high level of the content of the quick-acting nutrients in the soil, and can reduce the occurrence of diseases such as black shank, brown spot, mosaic disease and the like in the growth process of tobacco plants.
In one embodiment of the fertilizer for improving upper tobacco leaf quality of the present disclosure, the high carbon-based fertilizer comprises, in mass percent, greater than or equal to 2% of N, greater than or equal to 2% of P2O5And K of greater than or equal to 2%2O。
In one embodiment of the fertilizer for improving the quality of upper tobacco leaves of the present disclosure, the compound fertilizer comprises, in mass percent, greater than or equal to 10% of N, greater than or equal to 10% of P2O5And greater than or equal to 20% K2O。
The present disclosure also provides a fertilizer for improving the quality of upper tobacco leaves, including a base fertilizer and a top dressing. The base fertilizer is the fertilizer for improving the quality of the upper tobacco leaves, and the additional fertilizer is potassium nitrate. The mass ratio of the potassium nitrate to the potassium in the base fertilizer is (1-2) to (4-5). The potassium nitrate and the fertilizer for improving the quality of the upper tobacco leaves can be synchronously applied to the tobacco field, or the fertilizer for improving the quality of the upper tobacco leaves is used as a base fertilizer and the potassium nitrate is used as an additional fertilizer to be applied to the tobacco field.
The present disclosure also provides a tobacco cultivation method for improving the quality of upper tobacco leaves, comprising the steps of:
the fertilizer for improving the quality of upper tobacco leaves is used as a base fertilizer, potassium nitrate is used as a top dressing, and the mass ratio of potassium in the top dressing to potassium in the base fertilizer is (1-2) to (4-5).
In one embodiment of the tobacco cultivation method for improving the quality of upper tobacco leaves, disclosed by the invention, the base fertilizer is applied in a ditching and strip application manner, and the additional fertilizer is applied in a hole application manner.
Furthermore, the fertilizing time of the base fertilizer is 1-2 days before the tobacco plants are transplanted.
Further, the fertilizing time of the top dressing is the vigorous growth time of the tobacco plants.
Furthermore, the top dressing is applied twice.
In one embodiment of the tobacco growing method for improving the quality of the upper tobacco leaves of the present disclosure, the mass ratio of potassium in the top dressing to the base fertilizer is 1.5: 3.5.
The experimental procedures used in the examples below are conventional unless otherwise specified, the materials and reagents used therein are commercially available, and the equipment used in the experiments are well known to those skilled in the art without otherwise specified.
In 2019, the tobacco is tested in Yiyang county, Luoyang, Henan province, wherein the tobacco variety is Zhongyan 101, the soil type is brown soil, the organic matter of the soil is 12.10g/kg, the total nitrogen is 1.42g/kg, the alkaline hydrolysis nitrogen is 56.80mg/kg, the quick-acting phosphorus is 10.60mg/kg, the quick-acting potassium is 109.30mg/kg, and the pH value is 7.11.
Standard treatment (T treatment): 200 kg/mu of bio-organic fertilizer and 20 kg/mu of compound fertilizer are taken as base fertilizers, and the fertilizer is applied 2 days before the tobacco plants are transplanted in a ditching and strip-applying manner. And (3) applying fertilizers twice by using 5 kg/mu of potassium nitrate as top dressing in a hole application mode for a long period of time of tobacco plants (the time interval between two fertilizing is 5 days, and the fertilizing amount is the same), and performing other management according to local high-quality flue-cured tobacco planting specifications. The bio-organic fertilizer comprises 75 parts of cooked sheep manure (comprising, by mass, 25.62% of dry matter, 4.1% of crude protein, 0.87% of crude fat, 10.84% of crude fiber, 5.18% of nitrogen-free extract, 0.32% of Ca, 0.74% of N and 0.52% of P)2O5And 0.44% of K2O), 25 parts of high-carbon base fertilizer (comprising 4 percent of N and 5.2 percent of P in percentage by mass2O5And 2% of K2O) and 0.35 portion of trichoderma are used as biological organic fertilizers. The compound fertilizer comprises 10 percent of N and 10 percent of P in percentage by mass2O5And 20% of K2O。
Control group (CK treatment): 40 kg/mu of compound fertilizer is taken as base fertilizer, and the fertilizer is applied 2 days before the transplantation of tobacco plants by means of ditching and strip application. And (3) applying fertilizers twice by using 5 kg/mu of potassium nitrate as top dressing in a hole application mode for a long period of time of tobacco plants (the time interval between two fertilizing is 5 days, and the fertilizing amount is the same), and performing other management according to local high-quality flue-cured tobacco planting specifications.
Table 1 shows the agronomic traits of tobacco plants obtained from the standard group and the control group. As can be seen from Table 1, the plant height and maximum leaf area of CK treatment were higher than those of T treatment during the colony period; in vigorous growth period, the difference of the plant heights of the two treatments is not obvious, and the maximum leaf area of the T treatment is higher than that of the CK treatment; in the dome period, the height and the maximum leaf area of the T-treated plant are respectively and obviously increased by 8.63 percent and 6.94 percent compared with CK.
TABLE 1 agronomic traits
Table 2 shows the disease incidence and disease index of tobacco plants obtained from the standard group and the control group. As can be seen from Table 2, the incidence and disease index of the T-treatment black shank, brown spot and mosaic disease are lower than those of the CK-treatment, and the incidence of the T-treatment black shank, red spot and mosaic disease is obviously reduced by 32.0%, 39.6% and 26.8% compared with that of the CK-treatment.
TABLE 2 morbidity and disease index
Detecting soil components of the tobacco field, and finding that the organic matter content of the soil is remarkably higher in T treatment than CK treatment in the agglomeration period, the vigorous growth period and the dome period; the soil available nutrient content is higher in CK treatment than in T treatment in the agglomeration period, but is significantly higher in T treatment than in CK treatment in the vigorous growth period and the dome period. In the dome period, compared with CK treatment, T treatment improves the content of organic matters by 49.59%, the content of alkaline hydrolysis nitrogen by 68.55%, the content of quick-acting phosphorus by 45.51% and the content of quick-acting potassium by 31.70%.
Table 3 shows the appearance quality evaluation tables of tobacco plants obtained in the standard group and the control group. As can be seen from Table 3, the proportion of orange tobacco in the upper tobacco leaves treated by T is obviously improved, the oil content is increased, and the uniformity, the fullness and the gloss are greatly improved.
TABLE 3 evaluation of appearance quality
Table 4 is a table of sensory quality evaluations of tobacco leaves obtained in the standard group and the control group. As can be seen from Table 4, the quality of the cured tobacco leaves treated by T is improved, the aroma quality is improved, the aroma is fully developed and mellow, the taste is comfortable, the aftertaste is pure, and the sensory evaluation score is 1-2 points higher than that of the cured tobacco leaves treated by CK.
TABLE 4 sensory quality evaluation
Table 5 is a table of evaluation of physical characteristics of tobacco leaves obtained in the standard group and the control group. As can be seen from Table 5, there is a large difference between the T-treatment and the CK-control, and the physical properties such as leaf thickness, leaf surface density, single leaf mass and filling value of the T-treated flue-cured tobacco leaves are greatly improved.
TABLE 5 evaluation of physical characteristics
In conclusion, the proportion of the flue-cured tobacco leaves on the upper tobacco leaves and the proportion of the orange tobacco leaves after the fertilizer treatment for improving the quality of the upper tobacco leaves are obviously improved, the external feeling quality and the physical characteristics are obviously enhanced, the fragrance is full and mellow, the taste is comfortable, and the aftertaste is pure.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A fertilizer for improving the quality of upper tobacco leaves is characterized by comprising a biological organic fertilizer and a compound fertilizer; wherein the content of the first and second substances,
the biological organic fertilizer is prepared byThe fertilizer comprises, by weight, 70-80 parts of cooked sheep manure, 20-30 parts of high-carbon base fertilizer and 0.3-0.4 part of trichoderma, wherein the cooked sheep manure comprises, by mass, 24-27% of dry matter, 4-5% of crude protein, 0.5-1% of crude fat, 8-12% of crude fiber, 4-6% of nitrogen-free extract, 0.2-0.4% of Ca, 0.7-0.8% of N and 0.45-0.6% of P2O5And 0.4-0.5% of K2O, the high-carbon base fertilizer comprises 1% or more of N and 1% or more of P in percentage by mass2O5And greater than or equal to 1% of K2O, the effective spore number of the trichoderma is at least 3 x 105；
The compound fertilizer comprises, by mass, greater than or equal to 8% of N and greater than or equal to 8% of P2O5And K of greater than or equal to 16%2O；
The mass ratio of the biological organic fertilizer to the potassium in the compound fertilizer is (1-2) to (3-4).
2. The fertilizer for improving the quality of upper tobacco leaves according to claim 1, characterized in that the high-carbon base fertilizer comprises, in mass percent, greater than or equal to 2% of N, greater than or equal to 2% of P2O5And K of greater than or equal to 2%2O。
3. The fertilizer for improving the quality of upper tobacco leaves according to claim 1, characterized in that the compound fertilizer comprises, in mass percent, greater than or equal to 10% of N, greater than or equal to 10% of P2O5And greater than or equal to 20% K2O。
4. A fertilizer for improving the quality of upper tobacco leaves, which is characterized by comprising a base fertilizer and an additional fertilizer, wherein the base fertilizer is the fertilizer for improving the quality of upper tobacco leaves according to any one of claims 1 to 3, the additional fertilizer is potassium nitrate, and the mass ratio of the potassium nitrate to the potassium in the base fertilizer is (1-2) to (4-5).
5. A tobacco cultivation method for improving the quality of upper tobacco leaves is characterized by comprising the following steps:
the fertilizer for improving the quality of the upper tobacco leaves as claimed in any one of claims 1 to 3 is used as a base fertilizer, potassium nitrate is used as an additional fertilizer, and the mass ratio of potassium in the additional fertilizer to potassium in the base fertilizer is (1-2) to (4-5).
6. The tobacco cultivation method for improving the quality of upper tobacco leaves according to claim 5, characterized in that the base fertilizer is applied by means of ditching and strip application, and the top dressing is applied by means of hole application.
7. The tobacco cultivation method for improving the quality of the upper tobacco leaves according to claim 6, wherein the base fertilizer is applied for 1 to 2 days before the transplantation of the tobacco plants.
8. The method of claim 6, wherein the time of the top application is a vigorous growth period of the tobacco plant.
9. A tobacco growing method for improving the quality of upper tobacco leaves according to claim 8, characterized in that the top dressing is applied in two separate applications.
10. The tobacco cultivation method for improving the quality of the upper tobacco leaves according to claim 5, wherein the mass ratio of the additional fertilizer to the potassium in the base fertilizer is 1.5: 3.5.
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Application publication date: 20210903 |