Rapid biological remediation method for alkali spots

Abstract

The invention provides a rapid biological remediation method for alkali spots. The rapid biological remediation method comprises the steps of utilizing rainy seasons with the high temperature, conducting direct composting and coverage on fresh grass and rural solid waste alkali spots, conducting ripping and burying with surface soil after thorough decomposition, and creating a germination layer. The saline-alkali tolerance forage grass variety is preferably planted in autumn so as to increase the vegetation coverage, and the yield of forage grass can be remarkably improved. The rapid biological remediation method is an improvement technology which is low in forming cost, easy to operate and obvious and rapid in improvement effect.

Description

technical field

[0001] The invention relates to a soil improvement technology, in particular to a technology for improving and utilizing saline soil. Background technique

[0002] Soil salinization is a worldwide resource and ecological problem, and it is also an unsolvable land degradation problem in the world. At present, saline soil is widely distributed in the world and covers a large area. Except for Antarctica, which has yet to be investigated and studied, the coastal areas and arid and semi-arid areas of the other five continents and most of their major islands involve more than 100 countries and regions. The distribution of different types of saline soil. Salt stress affects almost all important life processes of plants. The total area of ​​saline soil in China is about 2×10 8 hm 2 , is one of the countries most seriously affected by desertification in the world today, and is mainly distributed in the inland areas of North China, Northeast China, and Northwest Ch...

Examples

Embodiment 1

[0013] The improved alkali spot test in this example is located in the grassland in the soda saline soil area of ​​Lootou Village, Tuogu Township, Zhaozhou County, Songnen Plain. Alkaline spots of different sizes are distributed, and the soil properties are shown in Table 1.

[0014] Table 1 Basic soil properties of alkali spots

[0015]

[0016] The specific operation links of this embodiment are as follows:

[0017] (1) From July 3 to 5, use chicken manure and fresh Leymus chinensis to compost and cover the alkali spots. According to the weight ratio of fresh grass and chicken manure of 3:7, the thickness of the tile is 40cm, and the compost is covered.

[0018] (2) On August 12-13, remove the compost, leave the decomposed manure and soil with a thickness of 10cm, shallowly turn 0-15cm, and mix well.

[0019] (3) Sowing began on August 16, with 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covered with 1-2 cm of soil.

Embodiment 2

[0021] The improved alkali spot test in this example is located in the grassland in the soda saline soil area of ​​Lootou Village, Tuogu Township, Zhaozhou County, Songnen Plain. Alkaline spots of different sizes are distributed, and the soil properties are shown in Table 1. The specific operation links are as follows:

[0022] (1) From July 3rd to 5th, use chicken manure and fresh alfalfa to cover the alkali spots with compost. According to the weight ratio of fresh grass and chicken manure of 3:7, the thickness of the tile is 40cm, and the compost is covered.

[0023] (2) On August 12-13, remove the compost, leave the decomposed manure and soil with a thickness of 8cm, shallowly turn 0-15cm, and mix well.

[0024] (3) Sowing began on August 16, with 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covered with 1-2 cm of soil.

[0025] The field application results of Example 1 and Example 2 show that after improvement, soil bulk densi...

Embodiment 3

[0032] The improved alkali spot test of this example is located in the soda saline soil grassland of Taifeng Village, Yongle Town, Zhaozhou County, Songnen Plain, where there are alkali spots of different sizes and no grass growing, with a pH of 10.03. The specific operation links are as follows:

[0033] (1) On July 5-6, use cow dung and fresh alfalfa to cover the alkali spots with compost. According to the weight ratio of fresh grass and cow dung of 3:7, the compost thickness is 40cm, and the compost is covered.

[0034] (2) On August 10-11, remove the excess compost, leave the decomposed manure and soil with a thickness of 8cm, shallowly turn 0-8cm, and mix well.

[0035] (3) Sowing started on August 12, sowing 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covering the soil with 1-2 cm.

[0036] The field application effect of Example 3 shows that after the improvement, the soil bulk density and soil salinity are significantly red...

technical field

[0001] The invention relates to a soil improvement technology, in particular to a technology for improving and utilizing saline soil. Background technique

[0002] Soil salinization is a worldwide resource and ecological problem, and it is also an unsolvable land degradation problem in the world. At present, saline soil is widely distributed in the world and covers a large area. Except for Antarctica, which has yet to be investigated and studied, the coastal areas and arid and semi-arid areas of the other five continents and most of their major islands involve more than 100 countries and regions. The distribution of different types of saline soil. Salt stress affects almost all important life processes of plants. The total area of ​​saline soil in China is about 2×10 8 hm 2 , is one of the countries most seriously affected by desertification in the world today, and is mainly distributed in the inland areas of North China, Northeast China, and Northwest Ch...

Examples

Embodiment 1

[0013] The improved alkali spot test in this example is located in the grassland in the soda saline soil area of ​​Lootou Village, Tuogu Township, Zhaozhou County, Songnen Plain. Alkaline spots of different sizes are distributed, and the soil properties are shown in Table 1.

[0014] Table 1 Basic soil properties of alkali spots

[0015]

[0016] The specific operation links of this embodiment are as follows:

[0017] (1) From July 3 to 5, use chicken manure and fresh Leymus chinensis to compost and cover the alkali spots. According to the weight ratio of fresh grass and chicken manure of 3:7, the thickness of the tile is 40cm, and the compost is covered.

[0018] (2) On August 12-13, remove the compost, leave the decomposed manure and soil with a thickness of 10cm, shallowly turn 0-15cm, and mix well.

[0019] (3) Sowing began on August 16, with 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covered with 1-2 cm of soil.

Embodiment 2

[0021] The improved alkali spot test in this example is located in the grassland in the soda saline soil area of ​​Lootou Village, Tuogu Township, Zhaozhou County, Songnen Plain. Alkaline spots of different sizes are distributed, and the soil properties are shown in Table 1. The specific operation links are as follows:

[0022] (1) From July 3rd to 5th, use chicken manure and fresh alfalfa to cover the alkali spots with compost. According to the weight ratio of fresh grass and chicken manure of 3:7, the thickness of the tile is 40cm, and the compost is covered.

[0023] (2) On August 12-13, remove the compost, leave the decomposed manure and soil with a thickness of 8cm, shallowly turn 0-15cm, and mix well.

[0024] (3) Sowing began on August 16, with 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covered with 1-2 cm of soil.

[0025] The field application results of Example 1 and Example 2 show that after improvement, soil bulk densi...

Embodiment 3

[0032] The improved alkali spot test of this example is located in the soda saline soil grassland of Taifeng Village, Yongle Town, Zhaozhou County, Songnen Plain, where there are alkali spots of different sizes and no grass growing, with a pH of 10.03. The specific operation links are as follows:

[0033] (1) On July 5-6, use cow dung and fresh alfalfa to cover the alkali spots with compost. According to the weight ratio of fresh grass and cow dung of 3:7, the compost thickness is 40cm, and the compost is covered.

[0034] (2) On August 10-11, remove the excess compost, leave the decomposed manure and soil with a thickness of 8cm, shallowly turn 0-8cm, and mix well.

[0035] (3) Sowing started on August 12, sowing 6 grams of Leymus chinensis seeds and 1.5 grams of Alpine grass seeds per square meter, covering the soil with 1-2 cm.

[0036] The field application effect of Example 3 shows that after the improvement, the soil bulk density and soil salinity are significantly red...

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