CN113973560A - Fertilizing method for improving nicotine content of tobacco leaves - Google Patents
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- CN113973560A CN113973560A CN202111227597.XA CN202111227597A CN113973560A CN 113973560 A CN113973560 A CN 113973560A CN 202111227597 A CN202111227597 A CN 202111227597A CN 113973560 A CN113973560 A CN 113973560A
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- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 139
- 241000208125 Nicotiana Species 0.000 title claims abstract description 115
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 title claims abstract description 38
- 229960002715 nicotine Drugs 0.000 title claims abstract description 38
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 138
- 230000004720 fertilization Effects 0.000 claims abstract description 72
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 69
- 239000003337 fertilizer Substances 0.000 claims abstract description 45
- 238000003973 irrigation Methods 0.000 claims abstract description 26
- 230000002262 irrigation Effects 0.000 claims abstract description 22
- 230000003203 everyday effect Effects 0.000 claims abstract description 9
- 238000002054 transplantation Methods 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 34
- 238000005904 alkaline hydrolysis reaction Methods 0.000 claims description 32
- 244000061176 Nicotiana tabacum Species 0.000 claims description 24
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 235000015097 nutrients Nutrition 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000011282 treatment Methods 0.000 description 12
- 239000002585 base Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 241000086254 Arnica montana Species 0.000 description 3
- 238000012364 cultivation method Methods 0.000 description 3
- 241001002356 Valeriana edulis Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010013911 Dysgeusia Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006696 biosynthetic metabolic pathway Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a fertilizing method for improving the nicotine content of tobacco leaves, which comprises the steps of respectively carrying out three-wheel fertilization at the root extension middle stage, the vigorous growth early stage and the vigorous growth middle stage of flue-cured tobacco; the method specifically comprises the following steps: performing first fertilization 15-22 days after flue-cured tobacco transplantation; performing second fertilization 35-42 days after the flue-cured tobacco is transplanted; performing a third round of fertilization 45-52 days after the flue-cured tobacco is transplanted; the first round of fertilization, the second round of fertilization and the third round of fertilization are all as follows: fertigation is carried out for 1 time every day for 3-5 days continuously; the fertilizer applied in the first round of fertilization, the second round of fertilization and the third round of fertilization are water-soluble fertilizers special for drip irrigation, wherein N is more than or equal to 10%, and P is water-soluble fertilizer special for drip irrigation2O5≥5％、K2O is more than or equal to 20 percent, wherein N: k2The ratio of O is 1: 2-4. According to the invention, the ecological environment of the tobacco area is maintained through low nitrogen input, and meanwhile, the absorption and utilization of nitrogen nutrients are promoted through efficient irrigation and optimized fertilization management, so that the nicotine content of the tobacco leaves is obviously improved, the high-quality production of the flue-cured tobacco is ensured, and the quality of the tobacco leaves is improved.
Description
Technical Field
The invention relates to the technical field of tobacco cultivation, in particular to a fertilizing method for improving nicotine content of tobacco leaves.
Background
Flue-cured tobacco is an important economic crop, and the quality of tobacco leaves is closely related to the nicotine content. High nicotine content gives strong aroma and good taste, while on the contrary, low aroma and bad taste. Therefore, maintaining the nicotine content within a suitable range is an important aspect in securing the quality of tobacco leaves. The requirement of the quality tobacco leaves of the international high-quality tobacco leaves on the nicotine content is 1.5-3.5%, wherein the nicotine content of the middle leaves is required to be 2.0-3.0%. Since the biosynthetic pathway of nicotine is that flue-cured tobacco utilizes soil nitrogen and is synthesized at the roots, the application of nitrogen fertilizer has the greatest impact on nicotine accumulation in tobacco leaves. And researches show that the tobacco plants can synthesize nicotine by using the nitrogen absorbed before topping, and the more the nitrogen application amount is, the more the residual nitrogen in the tobacco field after topping is, the higher the nicotine content is.
In recent years, with the implementation of the "zero fertilizer usage increase action plan by 2020 by the Ministry of agriculture", the application amount of chemical fertilizer in the production of tobacco leaves is gradually reduced. Taking Yunnan as an example, in 2010-2012 year, the quantity of inorganic nitrogen fertilizer applied per mu in flue-cured tobacco production in the whole province is about 7.0 kilograms, and in 2020, the quantity of the inorganic nitrogen fertilizer applied per mu in flue-cured tobacco production in the whole province is reduced to about 6.5 kilograms, and particularly, the quantity of the inorganic nitrogen fertilizer applied per mu in a drip irrigation water and fertilizer integrated tobacco production area is only about 5.0 kilograms per mu. After the use amount of the inorganic nitrogen fertilizer is reduced, on one hand, the energy consumption in the tobacco production is reduced and the ecological environment of a tobacco area is maintained, but on the other hand, the nicotine content in the tobacco is reduced to a certain extent. Therefore, how to increase or maintain the nicotine content of the tobacco leaves under low nitrogen input is an urgent problem to be solved.
In view of the above, there is a need to develop a fertilizing method for increasing nicotine content in tobacco leaves to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a fertilizing method for improving the nicotine content of tobacco leaves, and aims to solve the problem of how to improve the nicotine content of the tobacco leaves under low nitrogen input.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a fertilizing method for improving nicotine content of tobacco leaves, which comprises the following steps:
fertilizing the flue-cured tobacco by adopting a drip irrigation mode, and respectively performing three-wheel fertilization at the root extending middle stage, the vigorous growth early stage and the vigorous growth middle stage of the flue-cured tobacco; the method specifically comprises the following steps: performing first fertilization 15-22 days after flue-cured tobacco transplantation; performing second fertilization 35-42 days after the flue-cured tobacco is transplanted; performing a third round of fertilization 45-52 days after the flue-cured tobacco is transplanted; the first round of fertilization, the second round of fertilization and the third round of fertilization are all as follows: fertigation is carried out for 1 time every day for 3-5 days continuously; the fertilizer applied in the first round of fertilization, the second round of fertilization and the third round of fertilization are water-soluble fertilizers special for drip irrigation, wherein N is more than or equal to 10%, and P is water-soluble fertilizer special for drip irrigation2O5≥5％、K2O is more than or equal to 20 percent, wherein N: k2The ratio of O is 1: 2-4.
By adopting the method, three rounds of fertilization are respectively carried out at the middle root extending stage, the early growth stage and the middle growth stage of the flue-cured tobacco, and the fertilizer is coordinated according to the nutrient (nitrogen) demand characteristics of the flue-cured tobacco, so that the flue-cured tobacco can be favorably promoted to absorb and utilize the fertilizer (nitrogen), and the synthesis of nicotine in the tobacco plant body is favorably realized. When fertilization is carried out through three rounds, each round of continuous fertigation is carried out for 1 time every day for 3-5 days, so that the fertilization frequency in each period is improved, the nutrient concentration of a tobacco root zone is maintained to be continuously kept at a higher level, the absorption and utilization of a tobacco root system to fertilizer (nitrogen) are facilitated, and the synthesis of nicotine in a tobacco plant body is facilitated. The relative content among nitrogen, phosphorus and potassium elements in the fertilizer has obvious interaction effect on the absorption and utilization of nutrients, and the water-soluble fertilizer special for drip irrigation with specific content is applied in each round, so that the absorption and utilization of the fertilizer (nitrogen) by the flue-cured tobacco can be obviously promoted, and the synthesis of nicotine in tobacco plants is facilitated.
Preferably, a corresponding amount of nitrogen fertilizer is applied according to the alkaline-hydrolyzable nitrogen content of different soils; wherein, the nitrogen application amount of the soil with high alkaline hydrolysis nitrogen content is 3.0 kg/mu, the nitrogen application amount of the soil with medium alkaline hydrolysis nitrogen content is 3.5 kg/mu, and the nitrogen application amount of the soil with low alkaline hydrolysis nitrogen content is 4.0 kg/mu.
By adopting the method, the nitrogen fertilizers with corresponding amounts are applied according to the alkaline hydrolysis nitrogen contents of different soils, and the classification management is carried out according to the basic fertility of the field, so that the application accuracy of the fertilizers can be effectively improved, the flue-cured tobacco can be favorably promoted to absorb and utilize the fertilizers (nitrogen), and the synthesis of nicotine in tobacco plants can be favorably realized.
Preferably, the content of alkaline hydrolysis nitrogen in the soil with high alkaline hydrolysis nitrogen content is more than or equal to 120 mg/kg.
Preferably, the content of alkaline hydrolysis nitrogen in the medium alkaline hydrolysis nitrogen content soil is 60-120 mg/kg.
Preferably, the content of alkaline hydrolysis nitrogen in the soil with low alkaline hydrolysis nitrogen content is less than or equal to 60 mg/kg.
Preferably, during fertigation, the distance between the drippers is consistent with the distance between tobacco plants, the drippers are 5-10 cm away from the root base of the tobacco plants, and the rated flow of the drippers is 1.6-2.0L/h.
By adopting the method, the dripper is controlled within a proper distance from the root of the tobacco plant, so that the contact probability of fertilizer (nitrogen) in soil and the root system of the flue-cured tobacco can be increased, the flue-cured tobacco can be favorably promoted to absorb and utilize the fertilizer (nitrogen), and the synthesis of nicotine in the tobacco plant can be favorably realized.
Preferably, the tobacco spacing is 50 cm.
In summary, compared with the prior art, the invention has the advantages that:
1. according to the invention, the ecological environment of the tobacco area is maintained through low nitrogen input, and meanwhile, the absorption and utilization of nitrogen nutrients are promoted through efficient irrigation and optimized fertilization management, so that the nicotine content of the tobacco leaves is obviously improved, the high-quality production of the flue-cured tobacco is ensured, and the quality of the tobacco leaves is improved.
2. The invention can not only promote the normal growth of the tobacco leaves, improve the yield, the quality and the economic benefit of the tobacco leaves, but also save water, save fertilizer and protect the environment.
3. By controlling the input of the nitrogen fertilizer, the invention improves the utilization efficiency of the nitrogen fertilizer, reduces the fertilizing amount of the nitrogen fertilizer and obviously reduces the input in the fertilizing process.
Detailed Description
The invention provides a fertilizing method for improving nicotine content of tobacco leaves, which comprises the following steps:
fertilizing the flue-cured tobacco by adopting a drip irrigation mode, and respectively performing three-wheel fertilization at the root extending middle stage, the vigorous growth early stage and the vigorous growth middle stage of the flue-cured tobacco; the method specifically comprises the following steps: performing first fertilization 15-22 days after flue-cured tobacco transplantation; performing second fertilization 35-42 days after the flue-cured tobacco is transplanted; performing a third round of fertilization 45-52 days after the flue-cured tobacco is transplanted;
specifically, the first round of fertilization, the second round of fertilization and the third round of fertilization are all: fertigation is carried out for 1 time every day for 3-5 days continuously;
specifically, the fertilizers applied in the first round of fertilization, the second round of fertilization and the third round of fertilization are water-soluble fertilizers special for drip irrigation, wherein N is more than or equal to 10%, and P is water-soluble fertilizers special for drip irrigation2O5≥5％、K2O is more than or equal to 20 percent, wherein N: k2The ratio of O is 1: 2-4.
As a preference of this embodiment, a corresponding amount of nitrogen fertilizer is applied depending on the alkaline-hydrolyzable nitrogen content of the different soils; wherein, the nitrogen application amount of the soil with high alkaline hydrolysis nitrogen content is 3.0 kg/mu, the nitrogen application amount of the soil with medium alkaline hydrolysis nitrogen content is 3.5 kg/mu, and the nitrogen application amount of the soil with low alkaline hydrolysis nitrogen content is 4.0 kg/mu.
In the present embodiment, the content of alkaline-hydrolyzable nitrogen in the soil with high content of alkaline-hydrolyzable nitrogen is preferably not less than 120 mg/kg.
Preferably, the content of alkaline hydrolysis nitrogen in the medium alkaline hydrolysis nitrogen content soil is 60-120 mg/kg.
In the embodiment, the content of alkaline hydrolysis nitrogen in the soil with low content of alkaline hydrolysis nitrogen is preferably less than or equal to 60 mg/kg.
Preferably, in the drip irrigation fertilization, the distance between the drippers is consistent with the distance between the tobacco plants, the distance between the drippers and the root base of the tobacco plants is 5-10 cm, and the rated flow of the drippers is 1.6-2.0L/h.
Preferably, the spacing between the tobacco plants is 50 cm.
To clearly illustrate the effect of the present invention, the following experiments further illustrate that the experiment is provided with a total of 5 treatments, T1, T2, T3, T4 and T5; wherein the treatment of T2 and T4 is fertilization by using a conventional fertilization method.
Example 1
The tobacco field type of the embodiment is the tobacco field of the dam area, and the alkaline hydrolysis nitrogen content of the soil is 80 mg/kg. And (3) fertilizing the flue-cured tobacco by adopting a drip irrigation mode, wherein the tobacco field type is a mountain tobacco field, and the content of alkaline hydrolysis nitrogen in the soil is 57 mg/kg.
T1: respectively carrying out first round fertilization 18 days after flue-cured tobacco transplantation; performing second fertilization 38 days after the flue-cured tobacco is transplanted; performing third fertilization 48 days after the flue-cured tobacco is transplanted; fertigation is continuously carried out for 4 days in each fertilization period, and fertilization is carried out for 1 time every day; the fertilizer is N: p2O5：K2O is 50:11:150, the nitrogen application amount is 4.5 kg/mu, drip irrigation belts are arranged on single ridges and double rows, the distance between drippers is consistent with the plant distance, the distance between the drippers and the root base of the tobacco plant is 5cm, and the rated flow of the drippers is 1.8L/h.
Example 2
The test is carried out in 2019, the test site is located in the Yanyi district of Jingjing city of Yunnan province, the tobacco field type is mountain tobacco field, and the content of alkaline hydrolysis nitrogen in the soil is 57 mg/kg. The test set up the following two treatments:
t2 treatment: (local conventional flue-cured tobacco cultivation method): adopting a special fertilizer for common tobacco, wherein the fertilizer formula N is as follows: p2O5：K2O is 8:4:12, and the fertilizing amount is 7.0 kg/mu. After ridging and pool-digging are carried out on the tobacco field, 50% of special compound fertilizer for tobacco is placed in the middle of a tobacco pool and is fully and uniformly mixed with pool soil, and then tobacco is planted; circularly applying 30% of special compound fertilizer for tobacco around the root of the tobacco plant 35 days after the tobacco seedling is transplanted; and (4) digging a small hole on the ridge surface at a position 20cm away from the tobacco plant 45 days after the tobacco seedling is transplanted, applying the residual 20 percent of the special compound fertilizer for the tobacco into the hole and covering the hole with soil.
T3 treatment: (method of the invention): drip irrigation is adopted as a nutrient application mode, and fertilization is started respectively 15 days, 35 days and 45 days after the flue-cured tobacco is transplanted; fertigation is carried out for 3 days continuously in each fertilization period, and fertilization is carried out for 1 time every day; the fertilizer application type adopts special drip irrigation water-soluble fertilizer, and the fertilizer formula is N: p2O5： K2O is 15:15:30, and the nitrogen application amount is 4.0 kg/mu. The drip irrigation belts are arranged in single ridge and double rows, the distance between the drippers is consistent with the plant distance, the distance between the drippers and the root base of the tobacco plant is 5cm, and the rated flow of the drippers is 1.6L/h.
The nitrogen fertilizer dosage, tobacco nicotine content and harmony, tobacco yield and output value of the T2 treatment and the T3 treatment are shown in Table 1.
TABLE 1
As seen from Table 1, compared with the conventional fertilization method, the fertilization method of the invention has the advantages that the nicotine content of the leaf (middle leaf C3F) is obviously improved by 20% on the premise that the fertilization amount is reduced by 30%; meanwhile, the coordination of the sugar-alkali ratio and the nitrogen-alkali ratio of the leaf is improved; the yield and the output value of the tobacco leaves are respectively improved by 12 percent and 15 percent.
Example 3
The test of this example was carried out in 2020, at a location of Zhaojicun, the red tower region of Yuxi, Yunnan province, where the tobacco field type was the tobacco field of the dam region and the content of alkaline hydrolyzable nitrogen in the soil was 143 mg/kg. Experimental setup two treatments, T4 and T5:
t4 treatment (local conventional flue-cured tobacco cultivation method): adopting a special fertilizer for common tobacco, wherein the fertilizer formula N is as follows: p2O5：K2O is 12:8:24, and the fertilizing amount is 6.0 kg/mu. After ridging and pool-digging are carried out on the tobacco field, 40% of special compound fertilizer for tobacco is placed in the middle of a tobacco pool and is fully and uniformly mixed with pool soil, and then tobacco is planted; circularly applying 30% of special compound fertilizer for tobacco around the root of the tobacco plant 35 days after the tobacco seedling is transplanted; and (4) digging a small hole on the ridge surface 20cm away from the tobacco plant 45 days after the tobacco seedling is transplanted, applying the residual 30 percent of the special compound fertilizer for the tobacco into the hole and covering soil.
T5 treatment (the flue-cured tobacco cultivation method of the invention): drip irrigation is adopted as a nutrient application mode, and fertilization is started 22 days, 42 days and 52 days after the flue-cured tobacco is transplanted; fertigation is carried out for 5 days continuously in each fertilization period, and fertilization is carried out for 1 time every day; the fertilizer application type adopts special drip irrigation water-soluble fertilizer, and the fertilizer formula is N: p2O5： K2O20: 20:45, the nitrogen application amount is 3.0 kg/mu, drip irrigation tapes are arranged on single ridges and double rows, the spacing between drippers is consistent with the plant spacing, the distance between the drippers and the root base of the tobacco plant is 10cm, and the rated flow of the drippers is 2.0L/h.
The nitrogen fertilizer dosage, tobacco nicotine content and harmony, tobacco yield and output value of the T4 treatment and the T5 treatment are shown in Table 2.
TABLE 2
As seen from the table 2, compared with the local conventional fertilization method, the fertilization method of the invention has the advantages that under the premise that the fertilization amount is reduced by 40%, the nicotine content of the leaf (middle leaf C3F) is obviously improved by 23%; meanwhile, the coordination of the sugar-alkali ratio and the nitrogen-alkali ratio of the leaf is improved; the yield and the output value of the tobacco leaves are respectively improved by 18 percent and 14 percent.
Example 4
The tobacco field type of the embodiment is the tobacco field of the dam area, and the alkaline hydrolysis nitrogen content of the soil is 80 mg/kg. And (3) fertilizing the flue-cured tobacco by adopting a drip irrigation mode, wherein the tobacco field type is a mountain tobacco field, and the content of alkaline hydrolysis nitrogen in the soil is 150 mg/kg.
Respectively carrying out first round fertilization 15 days after flue-cured tobacco transplantation; performing second fertilization 35 days after the flue-cured tobacco is transplanted; performing third fertilization 45 days after the flue-cured tobacco is transplanted; fertigation is continuously carried out for 4 days in each fertilization period, and fertilization is carried out for 1 time every day; the fertilizer is N: p2O5：K2O15: 15:60, the nitrogen application amount is 3 kg/mu, drip irrigation belts are arranged on single ridges and double rows, the distance between drippers is consistent with the plant distance, the distance between the drippers and the root base of the tobacco plant is 8cm, and the rated flow of the drippers is 1.6L/h.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (7)
1. A fertilizing method for improving the nicotine content of tobacco leaves is characterized in that: the fertilizing method comprises the following steps:
fertilizing the flue-cured tobacco by adopting a drip irrigation mode, and respectively performing three-wheel fertilization at the root extending middle stage, the vigorous growth early stage and the vigorous growth middle stage of the flue-cured tobacco; the method specifically comprises the following steps: performing first fertilization 15-22 days after flue-cured tobacco transplantation; performing second fertilization 35-42 days after the flue-cured tobacco is transplanted; performing a third round of fertilization 45-52 days after the flue-cured tobacco is transplanted;
the first round of fertilization, the second round of fertilization and the third round of fertilization are all as follows: fertigation is carried out for 1 time every day for 3-5 days continuously;
the fertilizer applied in the first round of fertilization, the second round of fertilization and the third round of fertilization are water-soluble fertilizers special for drip irrigation, wherein N is more than or equal to 10%, and P is water-soluble fertilizer special for drip irrigation2O5≥5％、K2O is more than or equal to 20 percent, wherein N: k2The ratio of O is 1: 2-4.
2. The fertilizing method for improving the nicotine content of tobacco leaves as claimed in claim 1, wherein a corresponding amount of nitrogen fertilizer is applied according to the alkaline hydrolysis nitrogen content of different soils; wherein, the nitrogen application amount of the soil with high alkaline hydrolysis nitrogen content is 3.0 kg/mu, the nitrogen application amount of the soil with medium alkaline hydrolysis nitrogen content is 3.5 kg/mu, and the nitrogen application amount of the soil with low alkaline hydrolysis nitrogen content is 4.0 kg/mu.
3. The fertilizing method for improving the nicotine content of tobacco leaves according to claim 2, wherein the content of alkaline hydrolysis nitrogen in the soil with high content of alkaline hydrolysis nitrogen is not less than 120 mg/kg.
4. The fertilizing method for improving the nicotine content of tobacco leaves according to claim 2, wherein the alkaline hydrolysis nitrogen content in the medium alkaline hydrolysis nitrogen content soil is 60-120 mg/kg.
5. The fertilizing method for improving the nicotine content of tobacco leaves as claimed in claim 2, wherein the alkaline hydrolysis nitrogen content in the low alkaline hydrolysis nitrogen content soil is less than or equal to 60 mg/kg.
6. The fertilizing method for improving the nicotine content of tobacco leaves according to claim 1, characterized in that, during drip irrigation fertilization, the dripper distance is consistent with the tobacco plant distance, the dripper distance is 5-10 cm from the root base of the tobacco plant, and the dripper rated flow is 1.6-2.0L/h.
7. The fertilization method for increasing the nicotine content of tobacco leaves according to claim 6, wherein the tobacco spacing is 50 cm.
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| CN115299308A (en) * | 2022-08-19 | 2022-11-08 | 中国农业科学院烟草研究所(中国烟草总公司青州烟草研究所) | Method for researching regulation and control mechanism of nicotine content in upper tobacco leaves by hormone and agriculture |
| CN116267158A (en) * | 2023-04-11 | 2023-06-23 | 云南省烟草公司大理州公司 | Tobacco field nutrient management method and fertilizer for tobacco field nutrient management method |
| CN116267158B (en) * | 2023-04-11 | 2024-04-16 | 云南省烟草公司大理州公司 | Tobacco field nutrient management method and fertilizer for tobacco field nutrient management method |
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