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Effects of improved field practice on crop yield, water use and profitability of irrigation in Central Chile

✍ Scribed by L. A. Gurovich


Publisher
Springer
Year
1979
Tongue
English
Weight
454 KB
Volume
1
Category
Article
ISSN
0342-7188

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## Abstract The Qingtongxia Irrigation District (QID) is one of the key agricultural bases in the Yellow River Basin. It is located in the upstream part of the Yellow River in the north of China and covers about 350 000 ha of farmland. The climate in the district is arid and semi‐arid. The annual a