JP2009028020A - System for preventing desertification in arid zone and for greening/fertilizing desert area - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an efficient system for preventing desertification in an arid zone and for greening a desertified land and fertilizing desert soil, and to provide an unglazed water storage pot to be used for the system, ultimately minimizing water evaporation in a crop field of a desert area, and supplying proper amount of water. <P>SOLUTION: This system for preventing desertification in an arid zone and for greening/fertilizing a desert area includes using seawater, river water, or ground water as a water source, storing in a water receiving apparatus, a water source which is obtained by demineralizing seawater with a demineralizing apparatus according to the need to desalt, or a water source which is obtained by purifying river water in a purification tank according to the need, and feeding to a feed water tank followed by mixing nutrient solution mineral in the feed water tank. Meanwhile, the system includes arranging a raw water supply main in a desert area, arranging raw water supply branches on both the sides thereof in a manner of discharging without treating effluent, and setting on the raw water supply branch, an unglazed water storage pot such as ungrazed root eight-direction pot, ungrazed flat plate pot, and ungrazed wetting tube pot. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention proposes an efficient system for preventing desertification in arid areas, greening desertified land and fertilizing desert soil, and using moisture in crop fields in desert areas used therefor. The present invention relates to a water supply device with a minimum appropriate amount of evaporation.

  In general, the desert area is a barren wasteland where the evaporation in the long term is larger than the precipitation in the arid area and the vegetation is difficult to reproduce.In the desert, there are few types of plants that grow due to severe dryness, and evergreen Plants that store moisture in thick stems and leaves, such as perennial cactus, aloe, and dragon tongue orchid, grow when there is moisture, such as pine cones, dormancy in the dry season, and deep roots reach the groundwater surface It is said that there are things.

  In addition to animals such as camels and ostriches, there are only a small number of animals. However, if water is supplied, fertile cultivated land will be created, so oasis by rivers, springs, wells, etc. has long been a desert island. It has become a human life stage.

  There are various deserts, and they are distributed in inland basins far from the coast and in the mid-latitude continental west where the high pressure always covers. The daytime temperature reaches 40-60 degrees Celsius, and the daily temperature difference increases as the temperature falls below 0 ° C. at night. Therefore, the rock surface collapses and rocks are formed. Also, because it is easy to blow strong winds, in the area where rock debris was blown away by the wind, it is a rocky desert where only rocks are left, and those with gravels such as wind-eroded trigestone remain as a gravel desert, Sand transported by the wind accumulates and becomes a sand desert, which also serves as a sand dune. In general, most of the desert is a rocky desert and part of it is often a sand desert. In addition, the rain that rarely occurs is a heavy rain of the evening type and becomes a cloth-like flood, and only at this time, a valley (wadi) through which water flows is formed, but its end disappears into the desert, and there is a thick clay layer here Just a clay desert.

  In addition to the Sahara Desert (North Africa), which is a typical desert in Africa, the Libya Desert in North Africa, the Nuhija Desert in northeastern Africa, and the Kalahari Desert in southern Africa are known as deserts. In addition, the Rubuulhak Desert, the Nehud Desert, and the Root Desert are known.In Russia, China, and Asia, the Russian Kabir Desert, Karakum Desert, Lexil Combe Desert, Mongolian Gobi Desert, China Xinjiang Taklamakan Desert, Indian Tar Desert, North America In Black Rock Desert, Mojave Desert, Great Sork Lake Desert, South America Atacama Desert, Australia Great Victoria Desert, Great Sandy Desert, Gibson Desert, Simpson Desert, etc.

  In the typical Sahara Desert, about one-eighth of the area of 7.5 million square kilometers is the erg (sand desert), and the rest is the Hamada (rock desert). The average annual precipitation is less than 100 mm, the temperature is over 50 degrees in summer, and the temperature is below freezing in winter. The difference in temperature between daytime and night is extremely intense even during the day. In the Gobi Desert, temperatures are above 30 ° C in summer and below 20 ° C in winter. Annual average precipitation is 300 to 400 mm in the surrounding area and 200 to 300 mm in the inside. It is concentrated in July to August. In many cases, it is heavy rain in the evening. In addition, the Libyan Desert is geologically composed of ancient metamorphic rocks and granite in the south, and becomes a layer of weathered sediments as it goes north.

  In the Thar Desert at the border between India and West Pakistan, the northwestern part is a sandy desert and the southeastern part is a rocky desert.

  The desert area accounts for about 30% of the land area of the world. In Central Asia and Africa, the area is increasing every year. The cause of this is environmental pollution such as overcutting trees and acid rain. Increases in areas where rainfall is low, plant depletion due to lack of water retention on the land.

  Considering these circumstances, many desert greening and fertilization technologies have been developed, and various experiments have been conducted in consideration of prevention of desertification in dry areas and greening and fertilization of desert areas. The greening of deserts and the use of rainwater and stable netting have been promoted. In the 20th century, dams and irrigation networks were constructed and developed in a comprehensive manner (the Sudan and Indus rivers upstream of the Nile River). Sindh downstream, the Sil-Am basin in Central Asia, and the integrated development area in the western United States). In some regions, underground resources have been discovered and mining cities have been established to supply water from a distance, and many deserts are expected to be developed in the future.

  Therefore, desert greening effectively prevents the spread of desertification, secures rain in the desert in the desert soil, and makes effective use of crops while adjusting, enabling crop production in the desert, In the use of seawater, salt damage associated with the pumping of groundwater has been prevented, and seawater desalination, saltwater irrigation, pervaporation, condensation, etc. have been developed in the use of seawater. did not become.

    The present invention aims to prevent desertification in arid regions, and to greenen deserted land and fertilize desert soil. We have been making every effort to develop technologies for greening desert land and fertilizing desert soil.

  Hereinafter, the prevention of desertification in the dry zone and the greening / fertilization system in the desert zone according to the present invention will be described in detail with reference to FIG. 1. Sea water 1, river water 2, ground water 3 and the like are used as water sources. Of these water sources, desalination treatment with desalination treatment equipment 5 as necessary to remove salt that is harmful to fertilization of the desert, such as seawater 1, and removal of drifting substances such as river water 2 and purification of sludge It is ideal to purify water in the septic tank 4 if necessary, and use it as a water source, and the groundwater 3 is ideally pumping deep groundwater of several hundred meters or more, filling the voids of soil, strata, rocks, etc. Many of them contain silicic acid, iron, sulfur, magnesium, potassium, lime, etc., and their contents are classified into beneficial and harmful water sources, and various water sources are used effectively in the desert areas where they are constructed. Need to do, seawater 1, river 2, in addition to the underground water 3, to promote the use of rain water, not to mention the water source area for water storage a valid variety of water sources in the greening and fertilization of the desert in the water receiving device 6.

  The necessary water source to be procured in the water source area is stored in the water receiving device 6, and the water stored in the water receiving device 6 is supplied to the water supply tank 7 in the water supply area as necessary. The pump 11 driven by the generator 10 to be controlled is fed to the water supply tank 7, and the nutrient liquid mineral of the nutrient liquid mineral mixer 8 is mixed with the water supply tank 7 as necessary, and is supplied to the crop field to be maintained. Raw water containing suitable nutrient minerals is supplied. The raw water stored in the water supply tank 7 is supplied to the raw water supply area by the delivery pump 13. These units in the water supply area are operated by the central monitoring center 9 by integrating other units.

  On the other hand, the raw water supply trunk 15 is laid mainly in the sandy desert 14 of the desert area, and the raw water supply branch 16 is arranged on both sides of the main water supply branch 16 as a raw water supply area. An unglazed water storage tank 17 is disposed to minimize the water evaporation of water and supply an appropriate amount of water. The unglazed water storage tank 17 is an unglazed tank that is baked with low heat without applying glaze, and the water supply to the desert is performed without interruption, and seedlings for greening It has been confirmed that training is proceeding smoothly.

  The unglazed water storage basin 17 is provided with an unglazed tree root Happo basin 18, an unglazed flat plate basin 19, an unglazed wet tub basin 20, etc., depending on the geology of the desert and the type of plant to be cultivated. Needless to say. Needless to say, it is also possible to change the shape and dispose the drain hole at the bottom.

  As described above, according to the present invention, not only can the desertification that is rapidly progressing in the dry zone be prevented, but also the greening of the desertified land is promoted according to the geology of the desert, Supplying has enabled efficient development of desert soil fertilization. In addition, the present invention relates to an unglazed water storage tank that minimizes the evaporation of water in a crop field in a desert region and uses it to supply an appropriate amount of water.

  Water sources such as seawater 1, river water 2, and groundwater 3 are used as water sources for preventing desertification and greening and fertilizing desert areas. Of these, salt that is harmful to fertilization of the desert, such as sea water 1, is desalinated by desalination treatment equipment 5 to be desalinated, and septic tank 4 is used to remove drifting substances such as river water 2 and to clean sludge. The groundwater 3 is ideally pumped up to several hundred meters or more deep groundwater, and several thousand meters are excavated depending on the formation. The groundwater contains silicic acid, iron, sulfur, magnesium, potassium, lime, etc., and the beneficial substances among those contents can be used separately.

  About this invention, it is useful also for cultivation of farm products, such as an inclined type farmland, and the improvement of farmland can also be considered remarkable improvement.

Schematic diagram of desertification prevention and greening / fertilization system in desert areas. Slope view of unglazed tree root Happo-an. A slope view of an unglazed flat plate bowl. FIG.

Explanation of symbols

1: Seawater 2: River water 3: Groundwater 4: Septic tank 5: Desalination treatment device 6: Water receiving device 7: Water supply tank 8: Nutrient solution mineral mixer 9: Control center 10: Generator 11: Pump 12: On-site monitoring Panel 13: Delivery pump 14: Sand desert 15: Raw water supply main line 16: Raw water supply branch line 17: Unglazed reservoir 18: Unglazed tree root Happo 19:. Unglazed flat plate bowl 20: Unglazed wet cylinder bowl

Claims (1)

  Seawater, river water, groundwater, etc. are used as the water source. Among these water sources, seawater, etc., is desalinated with a desalination treatment device as necessary, and the water source, river water, etc. are purified in a septic tank as necessary. The water source is stored in the water receiving device, supplied to the water tank as necessary, and nutrient minerals suitable for the crop field to be maintained are mixed with the water tank, while raw water is supplied mainly to the sandy desert in the desert area. A main line is arranged, and raw water supply branch lines are arranged on both sides in a fish bone system, and raw water supply branch lines are arranged with unglazed water storage basin roots of unglazed tree roots, unglazed plate slabs, unglazed wet tubs, etc. Of desertification in the dry areas and greening and fertilization systems in desert areas

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