Method for building flower beds and planting flowers and plants in heavy saline-alkali land in arid region

Abstract

The invention discloses a method for building flower beds and planting flowers and plants in a heavy saline-alkali land in an arid region and relates to the technical fields of soil transformation methods and green lawn planting. The method for building flower beds and planting flowers and plants in the heavy saline-alkali land in the arid region comprises 18 steps and has various advantages of desalting rapidly, achieving long-acting and durable effect, saving water and cost, completely eliminating weeds, promoting growth of ornamental plants and the like.

Description

technical field [0001] The invention discloses a method for constructing a flower bed and planting flowers on heavy saline-alkali land in an arid area, and relates to the technical fields of soil reforming methods and green lawn planting. Background technique [0002] In the desert oasis area of ​​Northwest my country, due to factors such as the upward movement of groundwater levels and irrigation methods, there are many salinized lands, forming a large area of ​​heavily saline-alkali land. Especially in recent years, some newly developed industrial parks are often located on heavy saline-alkali wasteland in the suburbs, which makes landscaping work very difficult. In the past, various methods such as alien soil, salt drainage, salt blocking, and biological improvement have been used to improve saline-alkali land. However, the survival rate of the planted ornamental flowers and trees is low, the ornamental quality is poor, and the growth is slow. [0003] Among the various ...

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Problems solved by technology

Most of the measures taken are engineering technical measures such as arranging many and deep open channels, underground channels or shaft drainage and irrigation in farmland. These traditional irrigation and drainage engineering technologies objectively have the following problems: (1) When the groundwater rises every spring and the surface returns to salt , Salt washing and drainage consume too much water resources, generally need a large irrigation quota of 4500-7500m3 / hm2, high irrigation water consumption is not conducive to water saving; (2 ) The amount of irrigation and drainage projects is large, and the investment in drainage projects is high, generally 0.9-12,000 yuan / hm2, and the construction of drainage and irrigation projects is cumbersome; (3) Many drainage ditches and a large number of engineering earthworks occupy farmland, making The loss rate of farmland land use is as high as 6%-10%; (4) The maintenance workload and difficulty of irrigation and drainage projects are relatively large, especially the maintenance and operation management costs of the underground pipe salt discharge system are relatively high, and the average annual maintenance Cost 900-1500 yuan / hm2

[0004] There are mainly the following difficulties in planting green space flowers in heavily saline-alkali land in arid oasis areas: (1) Due to the large amount of water evaporation, the saline-alkali returned to the surface soil with evaporation is easy to burn seedlings; (2) Some weeds that grow in heavy saline-alkali land for a long time, such as reed, Suaeda salsa, Chenopodium, Polygonum, amaranth and other halophytes, have strong vitality and stronger growth competitiveness than garden flowers, and weeds are difficult to get rid of

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