Planting mode capable of reducing emission of soil greenhouse gas N2O

Abstract

The invention discloses a planting mode capable of reducing emission of soil greenhouse gas N2O. Corn and potato are used as interplanting crops, every two rows of corn and two rows of potato form anintercropping combined band, in each interplanting combined band, the corn or the potato serves as the starting row, two rows of corn and two rows of potato are arranged in sequence, and the row spacing of each row is 50 centimeters. According to the planting mode, under the condition without adopting external investment, only through the adjustment of the planting mode, the aim of reducing the emission of the farmland soil greenhouse gas N2O can be achieved while the yield of crops is considered. Through the interplanting mode, compared with single cropping, the nitrogen fertilizer application amount of the crops is improved, but the emission of the farmland soil greenhouse gas N2O is reduced.

Description

[0001]

Technical field

[0002] The invention belongs to the field of agricultural planting, in particular to a method for reducing soil greenhouse gas N 2 Planting patterns for O emissions.

[0003]

Background technique

[0004] Nitrous oxide, commonly known as "laughing gas", is an anesthetic gas that was once widely used in medical operations. However, when "laughing gas" enters the blood, it will cause hypoxia in the human body, and long-term inhalation may cause high blood pressure, fainting, and even heart attack. In addition, long-term exposure to such gases can also cause anemia and damage to the central nervous system.

[0005] Atmospheric N 2 One of the important sources of O is the farmland ecosystem, in the soil, N 2 O is produced by nitrifying and denitrifying microorganisms. People apply excess nitrogen fertilizers to farmland to promote microbial activities and convert nitrogen into N through nitrification and denitrification processes. 2 O. Biological ...

Examples

Embodiment 1

[0032] Embodiment 1: Single cropping corn

[0033] 1.1 Corn variety: Xundan 7

[0034] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0035] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), conventional nitrogen application for corn is 250kg / hm 2 , divided into basal fertilizer, small trumpet-mouth topdressing and large trumpet-mouth topdressing for three times, accounting for 8 / 20, 5 / 20, and 7 / 20 of the total nitrogen application respectively. Phosphorus and potassium fertilizers for corn were all applied as base fertilizer, respectively as phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 75kg / hm 2 , The nitrogen, phosphorus and potassium fertilizers used in the test were 46% urea, 14% general calcium and 50% pot...

Embodiment 2

[0049] Embodiment 2: Single cropping potatoes

[0050] 1.1 Potato variety: Huize No. 2

[0051] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0052] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), that is, the conventional nitrogen application of potatoes is 125kg / hm 2 , applied twice, basal fertilizer 60%, budding stage 40%. Phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 125kg / hm 2 , Phosphorus and potassium fertilizers are applied in the form of base fertilizer. The nitrogen, phosphorus and potassium fertilizers used in the experiment were 46% urea, 14% general calcium and 50% potassium sulfate. See Table 2 for details of conventional nitrogen fertilization methods.

[0053] Table 2 Potato field test ro...

Embodiment 3

[0066] Embodiment three: corn potato intercropping

[0067] 1.1 Potato variety: Huize No. 2, corn variety: Xundan No. 7

[0068] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0069] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), conventional nitrogen application for potatoes is 125kg / hm 2 , applied twice, basal fertilizer 60%, budding stage 40%. Phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 125kg / hm 2 , Phosphorus and potassium fertilizers are applied in the form of base fertilizer. The nitrogen, phosphorus and potassium fertilizers used in the experiment were 46% urea, 14% general calcium and 50% potassium sulfate. The routine nitrogen application for corn is 250kg / hm 2 , divided into basal fertilizer, s...

[0001]

Technical field

[0002] The invention belongs to the field of agricultural planting, in particular to a method for reducing soil greenhouse gas N 2 Planting patterns for O emissions.

[0003]

Background technique

[0004] Nitrous oxide, commonly known as "laughing gas", is an anesthetic gas that was once widely used in medical operations. However, when "laughing gas" enters the blood, it will cause hypoxia in the human body, and long-term inhalation may cause high blood pressure, fainting, and even heart attack. In addition, long-term exposure to such gases can also cause anemia and damage to the central nervous system.

[0005] Atmospheric N 2 One of the important sources of O is the farmland ecosystem, in the soil, N 2 O is produced by nitrifying and denitrifying microorganisms. People apply excess nitrogen fertilizers to farmland to promote microbial activities and convert nitrogen into N through nitrification and denitrification processes. 2 O. Biological ...

Examples

Embodiment 1

[0032] Embodiment 1: Single cropping corn

[0033] 1.1 Corn variety: Xundan 7

[0034] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0035] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), conventional nitrogen application for corn is 250kg / hm 2 , divided into basal fertilizer, small trumpet-mouth topdressing and large trumpet-mouth topdressing for three times, accounting for 8 / 20, 5 / 20, and 7 / 20 of the total nitrogen application respectively. Phosphorus and potassium fertilizers for corn were all applied as base fertilizer, respectively as phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 75kg / hm 2 , The nitrogen, phosphorus and potassium fertilizers used in the test were 46% urea, 14% general calcium and 50% pot...

Embodiment 2

[0049] Embodiment 2: Single cropping potatoes

[0050] 1.1 Potato variety: Huize No. 2

[0051] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0052] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), that is, the conventional nitrogen application of potatoes is 125kg / hm 2 , applied twice, basal fertilizer 60%, budding stage 40%. Phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 125kg / hm 2 , Phosphorus and potassium fertilizers are applied in the form of base fertilizer. The nitrogen, phosphorus and potassium fertilizers used in the experiment were 46% urea, 14% general calcium and 50% potassium sulfate. See Table 2 for details of conventional nitrogen fertilization methods.

[0053] Table 2 Potato field test ro...

Embodiment 3

[0066] Embodiment three: corn potato intercropping

[0067] 1.1 Potato variety: Huize No. 2, corn variety: Xundan No. 7

[0068] The field plot experiment adopted a random block design in which planting mode was the main treatment and nitrogen application rate was the secondary treatment.

[0069] 1.2 Nitrogen application level: 4, no nitrogen application (N0), 1 / 2 conventional nitrogen application (N1), conventional nitrogen application (N2), 3 / 2 conventional nitrogen application (N3), conventional nitrogen application for potatoes is 125kg / hm 2 , applied twice, basal fertilizer 60%, budding stage 40%. Phosphorus (P 2 o 5 )75kg / hm 2 , Potassium (K 2 O) 125kg / hm 2 , Phosphorus and potassium fertilizers are applied in the form of base fertilizer. The nitrogen, phosphorus and potassium fertilizers used in the experiment were 46% urea, 14% general calcium and 50% potassium sulfate. The routine nitrogen application for corn is 250kg / hm 2 , divided into basal fertilizer, s...

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