A method for comprehensively controlling saline-alkali land for planting crops

Abstract

The invention discloses a method for comprehensive treatment of crop planting in saline-alkali lands, which is used for the treatment and the planting in the saline-alkali lands and comprises the steps: (a) irrigation and salt elimination comprise underground salt elimination and ground surface salt elimination which are completed by three steps, wherein the underground salt elimination is firstly carried out for at least three days, the ground surface salt elimination is then carried out, and the underground salt elimination is repeated for 1-3 days at the third step; (b) the planting and salt reduction are realized by that a large area of suaeda salsa is planted, the irrigation and the salt elimination are conducted continuously before sprouting of the suaeda salsa and within two weeks after the sprouting, and the slightly wet irrigation is carried out at an interval when branching of the suaeda salsa is begun till the end of a growth peak period of the suaeda salsa; and (c) the planting of salt-tolerant crops is completed by that the slightly wet irrigation is continued for at least three days through the underground salt elimination, the large-area ground surface salt elimination is conducted for one time quickly, wheat is then seeded, the slightly wet irrigation is continued within one week after the seeding and after the sprouting, large flow irrigation is carried out for one time before the winter, and the slightly wet irrigation is carried out at an interval till the wheat gets ripe.

Description

technical field

[0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a technology for comprehensively controlling saline-alkali land and planting crops in turn. Background technique

[0002] With the continuous deepening of economic development, ecological problems have become increasingly prominent, especially the problem of land salinization in coastal areas has become more prominent. The saline-alkali land in coastal areas has the disadvantages of high salinity, low nutrient, large specific gravity and bulk density, low porosity and permeability coefficient, etc., which greatly restricts the ecological construction and agricultural production in coastal areas. Moreover, in saline-alkali land areas, fresh water resources are severely lacking and irrigation conditions are very limited, which are the main factors affecting plant growth. Therefore, in order to improve the ecological problems in saline-alkali land areas, it i...

Examples

Embodiment 1

[0037] (a) Irrigation and salt discharge: in mid-March, bury micro-moisture pipes and underground underground pipes in the saline-alkali land after deep excavation, and ridge up to carry out irrigation and salt discharge. The irrigation and salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt drainage include three steps. First, underground salt drainage is carried out for 4 days. The first step is to use micro-moisture pipes to locally enrich the salt in the soil by micro-moisture irrigation. The area collects and recycles the salt water; the second part conducts surface salt drainage, including the saline-alkali land after underground salt drainage, stops micro-moist irrigation, and uses flood irrigation to conduct a rapid and large-scale surface salt drainage; the third step repeats the first step Drain the salt underground for 2 days.

[0038] (b) Salt reduction by planting: in early April, a large area of ​​Suaeda salsa was pl...

Embodiment 2

[0041] (a) Irrigation and salt discharge: in mid-March, bury micro-moisture pipes and underground underground pipes in the saline-alkali land after deep excavation, and ridge up to carry out irrigation and salt discharge. The irrigation and salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt drainage include three steps. The first step is to drain salt underground for 5 days, and use micro-moist irrigation to locally enrich the salt in the soil, and use underground underground pipes to collect salt water in the area where the salt is enriched Recycling is carried out simultaneously by using a plurality of micro-moisture pipes and a plurality of underground underground pipes buried in the ground. Interlaced with the micro-moisture pipes, and the underground underground pipes are arranged at the intersection of the circumference of two adjacent micro-moisture pipes; the depth of the micro-moisture pipes buried underground is 50cm, an...

Embodiment 3

[0045] (a) Irrigation and salt discharge: in mid-March, buried underground pipes and micro-wet pipes in the saline-alkali land after deep excavation, raised ridges, and carried out irrigation and salt discharge. The irrigation salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt discharge include three steps. First, underground salt discharge for 6 days, including local enrichment of salt in the soil by means of micro-moist irrigation underground, and use of underground underground pipes to collect and recycle salt water in areas where salt is enriched The step is carried out at the same time by using a plurality of micro-moisture pipes and a plurality of underground underground pipes buried in the ground. The hidden pipes are interlaced with the micro-moisture pipes, and the underground underground pipes are arranged at the intersection of the circumferences of two adjacent micro-moisture pipes; 120cm, and then carry out surface s...

technical field

[0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a technology for comprehensively controlling saline-alkali land and planting crops in turn. Background technique

[0002] With the continuous deepening of economic development, ecological problems have become increasingly prominent, especially the problem of land salinization in coastal areas has become more prominent. The saline-alkali land in coastal areas has the disadvantages of high salinity, low nutrient, large specific gravity and bulk density, low porosity and permeability coefficient, etc., which greatly restricts the ecological construction and agricultural production in coastal areas. Moreover, in saline-alkali land areas, fresh water resources are severely lacking and irrigation conditions are very limited, which are the main factors affecting plant growth. Therefore, in order to improve the ecological problems in saline-alkali land areas, it i...

Examples

Embodiment 1

[0037] (a) Irrigation and salt discharge: in mid-March, bury micro-moisture pipes and underground underground pipes in the saline-alkali land after deep excavation, and ridge up to carry out irrigation and salt discharge. The irrigation and salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt drainage include three steps. First, underground salt drainage is carried out for 4 days. The first step is to use micro-moisture pipes to locally enrich the salt in the soil by micro-moisture irrigation. The area collects and recycles the salt water; the second part conducts surface salt drainage, including the saline-alkali land after underground salt drainage, stops micro-moist irrigation, and uses flood irrigation to conduct a rapid and large-scale surface salt drainage; the third step repeats the first step Drain the salt underground for 2 days.

[0038] (b) Salt reduction by planting: in early April, a large area of ​​Suaeda salsa was pl...

Embodiment 2

[0041] (a) Irrigation and salt discharge: in mid-March, bury micro-moisture pipes and underground underground pipes in the saline-alkali land after deep excavation, and ridge up to carry out irrigation and salt discharge. The irrigation and salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt drainage include three steps. The first step is to drain salt underground for 5 days, and use micro-moist irrigation to locally enrich the salt in the soil, and use underground underground pipes to collect salt water in the area where the salt is enriched Recycling is carried out simultaneously by using a plurality of micro-moisture pipes and a plurality of underground underground pipes buried in the ground. Interlaced with the micro-moisture pipes, and the underground underground pipes are arranged at the intersection of the circumference of two adjacent micro-moisture pipes; the depth of the micro-moisture pipes buried underground is 50cm, an...

Embodiment 3

[0045] (a) Irrigation and salt discharge: in mid-March, buried underground pipes and micro-wet pipes in the saline-alkali land after deep excavation, raised ridges, and carried out irrigation and salt discharge. The irrigation salt discharge includes underground salt discharge and surface salt discharge. Irrigation and salt discharge include three steps. First, underground salt discharge for 6 days, including local enrichment of salt in the soil by means of micro-moist irrigation underground, and use of underground underground pipes to collect and recycle salt water in areas where salt is enriched The step is carried out at the same time by using a plurality of micro-moisture pipes and a plurality of underground underground pipes buried in the ground. The hidden pipes are interlaced with the micro-moisture pipes, and the underground underground pipes are arranged at the intersection of the circumferences of two adjacent micro-moisture pipes; 120cm, and then carry out surface s...

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