The method of quickly turning the desert around the oasis water source in southern Xinjiang into fertile land

Abstract

The invention relates to a method for rapidly changing a desert at the periphery of a water source of an oasis in south Xinjiang into a fertile farmland. The method comprises the following steps: choosing a to-be-transformed desert area, building a water irrigation and drainage channel, roughly levelling and finely levelling, ploughing to the ultra-depth and exposing under the sunshine, irrigating with washing saline-alkaline, planting a salt-resistant plant, ploughing to great depth again, levelling, and conducting winter irrigation with the washing saline-alkaline; when the salt content of the soil of a plowing layer is 2.5-8.7 g / kg, a grain or cotton crop variety with relatively stronger salt tolerance is chosen to be planted; when the salt content of the soil is 8.8-13.8 g / kg, the salt resistant plant is continued to be planted; and when the transformation area is small and the investment is low, the wild lycium ruthenicum, sea-buckthorn, sophora alopecuroide, liquorice, populus diversifolia, halimodendron halodendron, apocynum venetum, calligonum mongolicum, sacsaoul, tamarix chinensis, alhagi or reed is chosen to reclaim, or the area with low salt content of soil is chosen to reclaim. The result shows that after the method is used, the average yield of seed cotton of the cotton is 289.1 kg per acre, the average yield of corn is 899.3 kg per acre, the yields are basically equal to the average yield of the normal year of the surrounding area, and the result proves that the method has the effect of rapidly changing the desert into the fertile farmland.

Description

technical field [0001] The invention relates to a method for quickly turning deserts around water sources in oasis in southern Xinjiang into fertile fields. Background technique [0002] Although southern Xinjiang has very rich land resources, due to the extremely dry and harsh desert environment, its vegetation is scarce, frequent sandstorms, uneven distribution of water resources, frequent natural disasters, and large-scale desertification and salinization of the land. The situation is difficult to be exploited. Experts generally believe that southern Xinjiang is the largest, most extensive and most typical arid region in China, and the hazards of desertification are prominent, resources and the environment are under great pressure, and production conditions are poor. According to related reports, the area of ​​desertified land in southern Xinjiang has reached 870,000 km 2 , accounting for 30% of the total land area of ​​desertification in the country, 60.4% of the total ...

AI Technical Summary

Problems solved by technology

[0004] Due to the characteristics of high investment, slow return, high risk, and strong unpredictability in land development, developers often only care about immediate interests and are unwilling to make "long-term" investments; Low, leading to the inability to use the existing desert land scientifically, coupled with the lack of targeted research work in the process of desert development and utilization in my country for a long time, resulting in the simple, backward, unsystematic and no-forward-looking way of turning the existing desert into good land For example, using Dongfanghong 55 old-fashioned chain-rail bulldozers, or even manual operation, lack of standardization of technology in the transformation process, unreasonable irrigation and salt washing methods, and neglect of comprehensive ecological environment protection. The phenomenon of predatory development and utilization of land resources such as deforestation and excessive grazing, the consequences are land desertification, soil erosion, grassland desert and abandonment of developed land, especially the degraded land or the previous improvement effect in reality. The phenomenon of secondary development of poor planting bases not only causes human, material and financial resources in the early stage, including the waste of water and soil resources and the destruction of the ecological environment in cotton areas, but also prolongs the cycle of improving deserts to high-standard fertile land, which in turn delays Development Opportunities

[0005] Through on-the-spot research on similar areas at home and abroad, experts generally believe that the ecological environment of southern Xinjiang is similar to that of other desert regions in the world, including the agricultural and natural ecological environment of neighboring countries such as Kazakhstan, Kyrgyzstan, Tajikistan, Pakistan, and India bordering southern Xinjiang. In comparison, the resource and environment conditions in southern Xinjiang are obviously poorer, and its development value is low and the risk is high

Up to now, there is no example of successful large-scale water and soil development in the ecological environment area of ​​southern Xinjiang

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