条件筛选
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What opportunities and challenges does the upsizing of agricultural machinery bring?
I. The trend toward larger agricultural machinery is becoming increasingly obvious. According to statistics from the China Agricultural Machinery Industry Association on 21 major tractor enterprises (accounting for more than 85% of the tractor industry's output and output value) and 18 major harvesting machinery enterprises (accounting for more than 80% of the harvester industry's output value and output),