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Bangladesh Agriculture is the main country. The development of agriculture is the development of this country. The importance of irrigation in agricultural production in today's world is immense. In the old irrigation management, water is used to water more than two to three times more than the actual demand of the crop, which is also the waste of water resources. Therefore, it is important to develop irrigation and water management technologies for the development of irrigation, social and economic and environmental conditions, by properly determining the demand for water in the crop, and the proper method of transportation and distribution of irrigation water. Boro season in Bangladesh is entirely irrigation. Production of grains in the rainy season Kharif-1 and II have also become dependent on irrigation due to lack of rainfall. In this case, the cost of production is increased on one hand, and due to the global climate change, the production is interrupted due to the effects of drought, extreme rainfall, drought and ground water level.

Description: Water Productivity 1
According to data from different sources, the amount of water in the entire world and atmosphere is 338.17 million cubic miles. 70 percent of our living world is slaughtered - the remaining 30 percent is landlocked. About 97 percent of saline water, 3 percent soft water, or large water reservoir in the water, in the ground, in the solid, liquid aerial condition in the interior. The location of 97% of saltwater is: sea, bay, sea (96.50%) partly underground (0.93%); Partial heart (0.006%). In order to house the need for reverse osmosis, salt water should be converted into mild water (five times more than normal) and energy costs. This method of softening of water is in progress in the water-turbulent countries of Seedee Arabia, Bahrain, United Arab Emirates. Since the era of scientist Aristotle, the process of turning water into rubbish water (hard water) or soft water turned out.
Mild water is easy to use, but uninterrupted use without salt water processing is impossible. 3% of the muddy water lies in ice caps, glacier, almost permanent snow (1.74); Partly underground ice and frozen particles (0.002%); Partial heart (0.007%); Atmosphere (0.001%); River (0.0002%); Wet soils (0.001%) wetlands (0.008%); And the other (0.44%) is not fixed, but 97% of soft water easily accessible, 97% of humid and ice-based plants are located in Antarctica, Greenland, Siberia and Himalayan mountains. In the remaining 3% of the rain, rivers, canal-bills, our daily living needs are being used. From the above arrangement of water resources, it is clear that only a small part of the amount of water that is lying idly on the earth is used for our daily needs.
In Bangladesh, 77% of total irrigable land is underground and only 23% is irrigated by over-ground water. On the other hand, due to frequent uncontrolled and uneven lifting by the country of 54 rivers from Bangladesh falling in the Bay of Bengal and three river water from Myanmar over Bangladesh, environmental degradation of ground water shortage in Bangladesh and some recharge (recharge) for the development of ground water level, but never aquifer He is not getting back to his predecessor. However, the water on the surface of the earth is gradually deteriorating. Buriganga, Shitalakshasaha rivers around Dhaka, rivers are not being called rivers anymore, it has been one share in industrial and human waste. Thousands of people were seen walking and bathing on both sides of Buriganga river. But those scenes are far too far Today's Buriganga appearance is completely different. Garbage bad odor in river water Black contaminants float on the water. The expert team, Sadarghat, receives the amount of dissolved oxygen (DO) of water in the Buriganga water at zero and 40, and the empty decimal 38 in the mouth of Dholiikhal. This amount is available to Pagla at zero point 33 and the amount of oxygen dissipated in the water at Pangaon on the other side of Buriganga is zero 1.3 But according to the Environmental Protection Act, for the maintenance of life of fishery and aquatic animals, it needs 5 milligrams of water per liter of dissolved oxygen or more. Make the condition of Shitalakshya, known as Narayanganj Pran, which is passing through Dhaka. The amount of harmful ingredients in its water is increasing day by day. Acid, alkali and dissolved chloride levels are much higher. Narayanganj, Siddhirganj water is mixed with the condition of Sitalakshya water. Meanwhile, many industries, including textiles, have been developed in the background of the Turag river. With the rise of industry, environmental disasters have become inevitable. A few days ago, after the oil spills of the 350 square kilometer area of ​​the Sundarbans, there was a lot of anxiety and anxiety in the minds of the public and environmentalists. The existence of large amounts of oil has been found in the area of ​​the area of ​​40 kilometers in front and back from the accident site. However, during the accident the water in the sala river was low. So oil has not penetrated much in the forest, and oil impact on wild animals is not more harmful. In 2011, BIWTA allowed the boat to move through the route of the sala river. At the beginning of the way 25-30 vessels per day, but the number has increased. Everyday there are more than 100 vessels. There is no doubt that the number of vessels will increase when other buildings, including the Rampal power plant, are operational. Apart from this, due to the severe water scarcity of Padma-Teesta river, the erosion of the Jamuna river and the sedimentation of all other rivers has reduced river gravity. Due to the acquisition of canal-bills and pollution by waste, irrigation water is also getting there.
In fact, living organisms survive in gentle drinking water