Process for improving soil quality of saline-alkali soil

Abstract

The invention discloses a process for improving saline-alkali soil quality, which comprises the following steps: 1) digging main ditches and branch ditches in the land, digging furrows on two sides of each main ditch, and communicating a main water spraying blind ditch with a water collecting well; (2) the main ditches and the branch ditches are filled with water-permeable tobacco sterilization powder, saltpeter is backfilled, and saltpeter layers are obtained; 3) continuing to tightly press the backfilled saltpeter layer by using the tobacco sterilization powder, and then backfilling the soil dug out of the main ditch and the branch ditches; 4) punching a plurality of sand holes in the main ditch, and filling tobacco sterilization powder in the sand holes; and 5) finally, adding an acid fertilizer to the soil surface layers of the backfilled main ditch and branch ditches. According to the method, the furrows are dug in the two sides of the main ditch, the furrows intercept rainwater and uniformly drain and spray the rainwater downwards, and the salt content of soil can be effectively reduced by means of the characteristic that salt and water are mutually soluble and the characteristic that soil has capillary permeation. The tobacco sterilization powder has the effects of sterilization, pH adjustment and soil hardening prevention.

Description

technical field

[0001] The invention relates to the technical field of soil improvement technology, in particular to a technology for improving saline-alkaline soil quality. Background technique

[0002] At present, the total area of ​​saline-alkali soil in my country is about 36 million hm 2 , accounting for 4.88% of the country's usable land area. Today, when the area of ​​arable land is decreasing, the population is expanding, and the available fresh water resources are becoming increasingly scarce, saline-alkali land, as a reserve resource for potential arable land, has great potential for development. The physical and chemical properties of saline-alkali soil are bad, which not only leads to the reduction of soil productivity, but also causes many environmental problems. Therefore, the improvement of saline soil is becoming more and more important. At present, the improvement measures of saline-alkali land mainly include physical methods, chemical methods and biologica...

Examples

Embodiment 1

[0025] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0026] 1) if figure 1 As shown, several (depth is 30cm, width is 50cm) main trenches 1 and (depth is 30cm, width is 20cm) branch trenches 2 are dug in the land, and the interval between main trenches 1 is 6m, each main trench The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0027] 2) in the main ditch 1 and the branch ditch 2, the permeable tobacco sterilizing powder is filled, and the surface of the tobacco sterilizing powder is backfilled with saltpeter to obtain the saltpet...

Embodiment 2

[0032] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0033] 1) if figure 1 As shown, some (depth is 35cm, width is 55cm) main trenches 1 and (depth is 35cm, width is 30cm) branch trenches 2 are dug in the land, and the interval between main trenches 1 is 7m. The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0034] 2) Fill the main ditch 1 and the branch ditch 2 with permeable tobacco sterilizing powder, and backfill with saltpeter to obtain a saltpeter layer; wherein, the tobacco sterilizing powder includes the following raw mate...

Embodiment 3

[0039] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0040] 1) if figure 1 As shown, several (depth is 40cm, width is 60cm) main ditch 1 and (depth is 40cm, width is 35cm) branch ditch 2 are dug in land, and the interval between main ditch 1 is 10m, each main ditch The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0041] 2) Fill the main ditch 1 and the branch ditch 2 with permeable tobacco sterilizing powder, and backfill with saltpeter to obtain a saltpeter layer; wherein, the tobacco sterilizing powder includes the following r...

technical field

[0001] The invention relates to the technical field of soil improvement technology, in particular to a technology for improving saline-alkaline soil quality. Background technique

[0002] At present, the total area of ​​saline-alkali soil in my country is about 36 million hm 2 , accounting for 4.88% of the country's usable land area. Today, when the area of ​​arable land is decreasing, the population is expanding, and the available fresh water resources are becoming increasingly scarce, saline-alkali land, as a reserve resource for potential arable land, has great potential for development. The physical and chemical properties of saline-alkali soil are bad, which not only leads to the reduction of soil productivity, but also causes many environmental problems. Therefore, the improvement of saline soil is becoming more and more important. At present, the improvement measures of saline-alkali land mainly include physical methods, chemical methods and biologica...

Examples

Embodiment 1

[0025] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0026] 1) if figure 1 As shown, several (depth is 30cm, width is 50cm) main trenches 1 and (depth is 30cm, width is 20cm) branch trenches 2 are dug in the land, and the interval between main trenches 1 is 6m, each main trench The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0027] 2) in the main ditch 1 and the branch ditch 2, the permeable tobacco sterilizing powder is filled, and the surface of the tobacco sterilizing powder is backfilled with saltpeter to obtain the saltpet...

Embodiment 2

[0032] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0033] 1) if figure 1 As shown, some (depth is 35cm, width is 55cm) main trenches 1 and (depth is 35cm, width is 30cm) branch trenches 2 are dug in the land, and the interval between main trenches 1 is 7m. The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0034] 2) Fill the main ditch 1 and the branch ditch 2 with permeable tobacco sterilizing powder, and backfill with saltpeter to obtain a saltpeter layer; wherein, the tobacco sterilizing powder includes the following raw mate...

Embodiment 3

[0039] A kind of technique for improving saline-alkaline soil quality, comprises the following steps:

[0040] 1) if figure 1 As shown, several (depth is 40cm, width is 60cm) main ditch 1 and (depth is 40cm, width is 35cm) branch ditch 2 are dug in land, and the interval between main ditch 1 is 10m, each main ditch The two sides of ditch 1 are dug to be provided with border ditch 3, and main ditch 1 and branch ditch 2 vertically intersect in the middle of furrow ditch 3, and each branch ditch 2 is parallel to each other; The water well 5 and the branch ditch 2 are connected with the main blind ditch 4, and the main blind ditch 4 is connected with the water collection well 5; the gradient between the main blind ditch 4 and the water collection well 5 is 1:10.

[0041] 2) Fill the main ditch 1 and the branch ditch 2 with permeable tobacco sterilizing powder, and backfill with saltpeter to obtain a saltpeter layer; wherein, the tobacco sterilizing powder includes the following r...

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