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为充分利用山区资源优势,加快山区贫困户的脱贫步伐,探索四季豆夏季栽培技术，1998年我们在平均海拔
In order to make full use of the advantages of mountainous resources, speed up the pace of poverty alleviation in mountainous areas to speed up the pace of poverty alleviation and explore the summer planting techniques of green beans, in 1998 we were at an average altitude