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Fertilization method for effectively reducing exhaust of tobacco field N2O

A fertilization method and tobacco field technology, applied in fertilization methods, fertilization devices, applications, etc., can solve problems such as the reduction of microbial activity energy, the impact on tobacco leaf yield and quality, and the compaction and acidification of tobacco planting soil, so as to reduce the input of chemical fertilizers and promote The effect of fully absorbing and utilizing and increasing the biomass of tobacco plants

Active Publication Date: 2018-02-02
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The long-term large amount of chemical fertilizer input leads to the use of nitrogen fertilizer exceeding the absorption of flue-cured tobacco, which not only causes N 2 A large amount of O emission also caused compaction and acidification of tobacco planting soil, reduction of C / N ratio, and reduction of microbial activity energy, which ultimately affected the yield and quality of tobacco leaves

Method used

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  • Fertilization method for effectively reducing exhaust of tobacco field N2O
  • Fertilization method for effectively reducing exhaust of tobacco field N2O

Examples

Experimental program
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Effect test

Embodiment 1

[0030] An effective way to reduce tobacco field N 2 The fertilization method of O emission, comprises the steps:

[0031] (1) Deep ring application of basal fertilizer: After the tobacco field is ridged and on the day before the tobacco plants are transplanted, apply 50% compound fertilizer (N:P 2 o 5 :K 2 O=14:14:17) as the base fertilizer, with the center of the chimney pond as the reference point and a radius of 10cm, excavate a fertilization groove with a depth of about 5cm, and cover with soil after the base fertilizer is applied;

[0032] (2) Apply seedling fertilizer: 7 days after transplanting tobacco seedlings, apply potassium nitrate 1kg / 667m 2 Add water 200kg / 667m 2 watering;

[0033] (3) Ring topdressing: 30 days after the tobacco seedlings are transplanted, use the center of the smoke pond as the reference point, add the remaining 40% compound fertilizer (N:P 2 o 5 :K 2 O=14:14:17), with a radius of 10cm, spread evenly on the soil surface and cover with ...

Embodiment 2

[0036] An effective way to reduce tobacco field N 2 The fertilization method of O emission, comprises the steps:

[0037] (1) Deep ring application of base fertilizer: After the tobacco field is ridged, on the day of transplanting the tobacco seedlings and before the tobacco seedlings are transplanted, use 70% of the compound fertilizer as the base fertilizer, with the center of the smoke pond as the reference point and a radius of 15cm , excavate the fertilization groove, the depth of the groove is 6cm, cover the soil after the base fertilizer is applied; then carry out irrigation, so that the water content of the 30cm deep soil reaches 50% WFPS;

[0038] (2) Apply seedling fertilizer: 10 days after transplanting tobacco seedlings, potassium nitrate (K 2 O content ≥ 50%) 3kg / 667m 2 Add water 600kg / 667m 2 watering;

[0039] (3) Ring topdressing: 35 days after the tobacco seedlings are transplanted, take the center of the smoke pond as the reference point, spread 25% of t...

Embodiment 3

[0043] An effective way to reduce tobacco field N 2The fertilization method of O emission, comprises the steps:

[0044] (1) Deep ring application of base fertilizer: After the tobacco field is ridged, on the day of transplanting the tobacco seedlings, 60% of the compound fertilizer is used as the base fertilizer on the day of transplanting the tobacco seedlings, with the center of the smoke pond as the reference point and a radius of 12cm. Excavate the fertilization groove, the depth of the groove is 5cm, cover the soil after applying the base fertilizer; then irrigate, so that the water content of the 30cm deep soil reaches 65%WFPS;

[0045] (2) Apply seedling fertilizer: 8 days after transplanting tobacco seedlings, potassium nitrate (K 2 O content ≥ 50%) 2kg / 667m 2 Add water 400kg / 667m 2 watering;

[0046] (3) Ring topdressing: 32 days after the tobacco seedlings are transplanted, take the center of the smoke pond as the reference point, spread 30% compound fertilize...

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Abstract

The invention discloses a fertilization method for effectively reducing exhaust of tobacco field N2O. The fertilization method comprises the steps of 1, circularly applying base fertilizer at the deeplayer; 2, applying seedling lifting fertilizer; 3, circularly applying topdressing fertilizer; 4, applying balance fertilizer. The utilization rate of nitrogen of flue-cured tobaccos can be effectively increased, the exhaust amount of tobacco field N2O is obviously reduced, the absorption of nutrients by the flue-cured tobaccos is promoted, the biomass of tobacco plants is increased, the yield oftobacco leaves is increased, the quality of the tobacco leaves is improved, the economic benefit of the tobacco leaves is increased, and the environment risk caused by nutritive residues can also bereduced.

Description

technical field [0001] The invention belongs to the fields of flue-cured tobacco cultivation technology and ecological environment protection, and in particular relates to a method for effectively reducing N 2 Fertilization methods for O emissions. Background technique [0002] Nitrous oxide (N 2 O) is second only to CO 2 and CH 4 The increase of its concentration not only intensifies the global greenhouse effect, but also leads to the destruction of the ozone layer and the enhancement of ground ultraviolet radiation. Agriculture is atmospheric N 2 O The most important emission source, accounting for 80% of the total anthropogenic emissions. Agriculture N 2 O emissions mainly come from the soil, and the large application of nitrogen fertilizer is that the farmland soil becomes atmospheric N 2 O the main reason for the number one human source. According to the survey, the direct emission of N from agricultural soils due to the application of chemical nitrogen fertil...

Claims

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Application Information

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IPC IPC(8): A01C21/00
CPCA01C21/005
Inventor 马二登徐照丽李军营童文杰邓小鹏张瑞勤孙军伟王津军封幸兵
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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