河北省的南滚龙沟人,一不靠别人,二不靠国家,全凭自己的双手和智慧,经过十年艰苦奋斗,把全部岗坡耕地改造成为水平梯田,开凿几十里长的盘山渠道,使得大部分农田实现了自流灌溉;大量植树造林,大量饲养牲畜,大量积肥造肥……终于在拔海500～1,200米、无霜期只有150多天的高寒山 Longtan people in Hebei Province, one does not rely on others, the second is not dependent on the country, with their own hands and wisdom, after ten years of hard work, to transform all Gangpo cultivated land into a horizontal terrace, dredging dozens of miles long winding Channels, so that most of the farmland to achieve gravity irrigation; a large number of afforestation, a large number of livestock raising, a large number of fertilizer fertilizer ... ... finally pull the sea 500 ~ 1,200 meters, frost-free period of only 150 days of the Alpine