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造林工程综合技术在瘠薄山地上的应用赵承进（沂南县粮援项目办公室）沂南县大峪在小流域是中德合作山东粮援项目小流域治理工程之一。该流域治理前自然条件极差：水源十分缺乏，土壤瘠薄，荒山面积大，自然植被稀少。水土流失严重。自１９９０年至１９９２年历经３年时间...
Application of afforestation integrated technology in barren hills Zhao Chengjin (Yinan County Food Aid Project Office) Dayu in Yinan County is one of the small watershed management projects of Sino-German Shandong food aid project in the small watershed. The watershed before the poor natural conditions: water is very scarce, barren soil, barren hills, natural vegetation is scarce. Soil erosion is serious. After three years from 1990 to 1992 ...