【正文】 most cases, the water used for irrigation can’t be used afterward for other purposes, such as water supply for homes or industry. Some forms of irrigation use water more efficiently than others. The efficiency of water use varies by region, crop, agricultural practice, and technology. The least efficient types of irrigation are the surface methods. Your reading really didn’t go into this, but think of how much water it takes for a traditional surface method like field flooding. It takes a lot of water to flood a field. The water collects into ponds or basins, but then most of it either evaporates into the air or passes down through the soil into groundwater. This means that, in lots of places, less than half of all the water applied to a field is actually used by the crop. The rest is lost to evaporation or to groundwater. All of the flooding methods generally waster a lot of waterwater that could otherwise be used for other purposes. Fortunately, there are several irrigation technologies that are more efficient than the poorly controlled and highly wasteful flooding methods. They range from sprinkler systems to drip irrigation. In sprinkler systems, water is sprayed over crops, and this provides an even distribution of water. New precision sprinkler technologies have greatly improved our ability to deliver water exactly when and where it’s needed. However, sprinkler systems are also a form of surface irrigation, and just as in other surface methods, some of the water is still lost to evaporation.(Narrator)Summarize the points made in the lecture, explaining how they cast doubt on points made in the reading.StopThe task requires you to do two things: (1) summarize the key points from the lecture, and (2) explain how they cast doubt on points made in the reading. To respond to the question pletely, you have to connect information from the lecture and the reading. The key points from the lecture are: Irrigation uses a lot of water that cannot be used later for other purposesSurface methods of irrigation are the least efficient methods.The surface method of field flooding wastes a lot of water.With field flooding, most of the water evaporates or passes into groundwater.Sprinkler systems are more efficient than flooding, but some water is still lost.Generally, the points made in the lecture cast doubt on the information in the reading, which does not address the wastefulness and lack of efficiency of surface irrigation.The written response should answer the question by using relevant information from the lecture and the reading. An effective response would include all or most of the key ideas from the lecture and relate from correctly to information in the reading.Word count:169 Irrigation, the artificial watering of land for agriculture, has a high use of water. Water for irrigation es from several sources, such as direct rainfall, rivers, lakes, and reservoirs. Some irrigation methods use a lot of water, such as flooding large fields. According to the reading, flooding is widely used because of low cost and long tradition. However, the lecture casts doubt on this point by stating that surface methods are not efficient. The water that is used for irrigation can’t be used for other purposes. With surface irrigation, some of the water goes to the plants。 however, a lot of water evaporates or passes down into the ground. This wastes a lot of water because the water is not available for other purposes such as drinking. The surface method of flooding large fields requires a lot of water. Some of the water evaporates when it collects into ponds on the field. Sprinkler systems are a more efficient type of surface irrigation, but they also lose water to evaporation. 肆莄蚆羀艿蠆薂罿莁蒂袁羈肁芅螇羇膃蒀螞羆芅芃薈肅羅蒈蒄肅肇芁螃肄膀蕆蝿肅莂芀蚅肂肁薅薁肁膄莈袀肀芆薃螆聿莈莆螞腿肈薂薈螅膀莄蒄螄芃薀袂螃肂莃螈螃膅蚈蚄螂芇蒁薀螁荿芄衿螀聿葿螅衿膁節(jié)蟻袈芄蒈薇袇羃芀蒃袇膅蒆袁袆羋荿螇裊莀薄蚃襖肀莇蕿袃膂薂蒅羂芄蒞螄羈羄薁蝕羈肆莄蚆羀艿蠆薂罿莁蒂袁羈肁芅螇羇膃蒀螞羆芅芃薈肅羅蒈蒄肅肇芁螃肄膀蕆蝿肅莂芀蚅肂肁薅薁肁膄莈袀肀芆薃螆聿莈莆螞腿肈薂薈螅膀莄蒄螄芃薀袂螃肂莃螈螃膅蚈蚄螂芇蒁薀螁荿芄衿螀聿葿螅衿膁節(jié)蟻袈芄蒈薇袇羃芀蒃袇膅蒆袁袆羋荿螇裊莀薄蚃襖肀莇蕿袃膂薂蒅羂芄蒞螄羈羄薁蝕羈肆莄蚆羀艿蠆薂罿莁蒂袁羈肁芅螇羇膃蒀螞羆芅芃薈肅羅蒈蒄肅肇芁螃肄膀蕆蝿肅莂芀蚅肂肁薅薁肁膄莈袀肀芆薃螆聿莈莆螞腿肈薂薈螅膀莄蒄螄芃薀袂螃肂莃螈螃膅蚈蚄螂芇蒁薀螁荿芄衿螀聿葿螅衿膁節(jié)蟻袈芄蒈薇袇羃芀蒃袇膅蒆袁袆羋荿螇裊莀薄蚃襖肀莇蕿袃膂薂蒅羂芄蒞螄羈羄薁蝕羈肆