Method for effectively reducing N2O emission in flue-cured tobacco cultivation soil

A soil and flue-cured tobacco technology, applied in the field of flue-cured tobacco cultivation, can solve problems such as crop yield decline and product quality degradation, and achieve the effects of promoting absorption and utilization, promoting growth and development, and increasing porosity

Pending Publication Date: 2022-02-25
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although some reports have confirmed the effect of reducing nitrogen fertilizer application on N 2 Positi

Method used

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  • Method for effectively reducing N2O emission in flue-cured tobacco cultivation soil
  • Method for effectively reducing N2O emission in flue-cured tobacco cultivation soil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] The experiment was conducted in 2019. The test location is located in the township of Zhanyi District, Qujing City, Yunnan Province, and the Tobaco Type of Yakatai.

[0027] According to (local routine flue-cured tobacco cultivation): In the predetermosphere, the flour far plow is 15cm, and the plowing depth is 15cm. The height of the flue-cured tobacco is 20cm. After the pond, 50% tobacco special composite fertilizer is placed in the middle of the Tobacital in the middle of the Tobacket. Dirt, after smoking; 35 days after transplanting the smoke seedling, 30% tobacco special compound fertilizer ring is surrounded by the roots of the tobacco plant; 45 days after the smoke seedling is transplanted, 20cm is tightly smashed at 20cm. Cave, the remaining 20% ​​tobacco special composite fertilizer is applied to the hole.

Example Embodiment

[0028] Example 2

[0029] The experiment was conducted in 2019. The test location is located in the township of Zhanyi District, Qujing City, Yunnan Province, and the Tobaco Type of Yakatai.

[0030] According to (the cultivation method of the flue-cured tobacco to cigarette): The soil is deeply overturned, the sharp plow is 20cm, the height of the flue-to-smoked plant is 25cm; after the pond, apply into the pond to enter the corn stalk bry carbon 500kg / mu; Irrigation and fertilization management in field irrigation and fertilization technology. During the drip irrigation process, the single irrigation quota is 2mm; the use of fertilizer is dedicated to drip irrigation, the amount of nitrogen fertilizer is 4.0kg / mu; 5% of the total amount of nitrogen fertilizer in 5 days after transplanting, transplanted 15 days The total amount of nitrogen fertilizer is 10% of the total amount of nitrogen fertilizer in 25 days. It is 35% of the total amount of nitrogen fertilizer in 35 days, ...

Example Embodiment

[0031] Example 3

[0032] The experiment was conducted in 2019. The test location is located in the township of Zhanyi District, Qujing City, Yunnan Province, and the Tobaco Type of Yakatai.

[0033] According to (the cultivation method of the flue-cured tobacco to do in the present invention, the soil is deeply overturned, the plow depth is 25cm, the height of the flue-tobage is 30cm; after the pond, apply into rice straw bry carbon 450kg / mu] Irrigation and fertilization management in field irrigation and fertilization technology. During the drip irrigation process, the single irrigation quota is 2mm; the type of fertilizer is dedicated to drip irrigation, the amount of nitrogen fertilizer is 3.5kg / mu; the total amount of nitrogen fertilizer is applied 7 days after transplanting, and the transplant is 17 days. The total amount of nitrogen fertilizer was 10% in 27 days, and the total amount of nitrogen fertilizer was applied in 27 days, and the total amount of nitrogen fertili...

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Abstract

The invention belongs to the technical field of flue-cured tobacco cultivation, and particularly relates to a method for effectively reducing N2O emission in flue-cured tobacco cultivation soil. The method includes the following steps: performing soil deep ploughing during soil preparation in advance: deeply ploughing cultivation soil; ridging and pond digging: ridging the soil subjected to deep ploughing; applying biochar: applying straw biochar into the pond in the step (2); irrigation and fertilization management: carrying out field irrigation and fertilization management by adopting a drip irrigation water and fertilizer integrated technology, and in the drip irrigation process, performing single-time irrigation with the quota of 2-3mm and 1.2-1.8 L/plant; according to the invention, on the basis of guaranteeing the yield and the output value of the flue-cured tobacco, obvious emission reduction of N2O in the tobacco field can be achieved.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco cultivation, and in particular relates to a method for effectively reducing N in soil for flue-cured tobacco cultivation. 2 O method of emission. Background technique [0002] Agriculture is atmospheric N 2 O is the most important source of emissions, accounting for 80% of the total anthropogenic emissions. Agriculture N 2 O emissions mainly come from the soil, and the large-scale application of nitrogen fertilizer means that the farmland soil becomes atmospheric N 2 O the main reason for the number one human source. A large number of studies have shown that reducing the amount of nitrogen fertilizer and avoiding suitable N 2 Soil moisture environment produced by O is to reduce farmland N 2 The fundamental pathway of O emissions. Although some reports have confirmed the effect of reducing nitrogen fertilizer application on N 2 O emission reduction has a positive effect, but it a...

Claims

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Application Information

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IPC IPC(8): A01G22/45A01B79/02A01C21/00A01G25/00
CPCA01G22/45A01B79/02A01C21/00A01G25/00Y02A40/22
Inventor 马二登徐照丽邓小鹏李军营代快胡志明
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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