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The Chinese water problem exit is where(D)

provenance:Gz Yibao

Date Added:2006-03-05

1. should put the pipe line of the stanza water reason in the preferred position.The valid exploitation of the stanza water and the exaltation water can't stay around the orally, should use the water to the plan, economy with the core target that the water is the pipe line reason to investigate,.( but is not to supply water the more the better the conduct and actions investigates the target)The irrigation is agricultural with the big door of water, the valid irrigation is initial mission of the stanza water doubtless.Quote from the water to measure the half non-arrival in the field currently, and the farm crop of the in the field consume the half of the water quantity that the amount of water also does not go to into the in the field.So exaltation irrigation the potential of the efficiency is very big.Currently" three Rs"s of adoption of the international upper-class line, namely stanza water( Reduce), make use of( Reuse), circulate to make use of( Recycle) again to match the stanza water principle to the valid exploitation of raise the resources of water.If we can used for the life to the high quantity fresh water to drink, used for the industry to the water that conforms to the standard, then used for the agriculture to the water that has been handle, this is to match the need of the stanza water pipe line reason.Make use of rain, ºé moreover and well and is a realization to make use of new path of the resources of water effectively.In fact the our country half the year of dry region declines the amount of water at 250-550 millimeters about have 2,200,000 square kilometers, the water resources quantity that we discuss currently is the groundwater resources quantity that declines the water to measure 20% earth's surface path discharge and seldom cans make use of only.Decline the amount of water currently actually in in addition to 20% ising or so to absorb for the farm crop,60% for invalid evaporation.( can pass to gather the engineering of water to take into the collections exploitation)The our country of 1991 is in the river the south Taoist priest grave village of City creates the kiln of water to goes together with the drop to infuse, carrying out the whole village person a water sprinkles the experience of the ground, collecting to 2-3 square kilometers of volume of rain of area take into inside 40 water kilns only then with carry out.So the stanza pipe line reason also includes to make use of the natural rainfall.Should put the stanza water engineering at build the important position of new marine hydraulic engineering equal.

2. the establishment right price of water and expenseses recover the system is important policy that 21 centuries enhance the pipe line reason.

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