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青海省现有耕地面积67.8万 hm~2,其中坡耕地41.8hm~2,坡耕地平均粮食产量156.1kg。根据调查统计,全省可退坡耕地共计36.5万 hm~2,主要包括25度以上陡坡耕地、25度以下山旱地、高海拔地区的农耕地和80年代以来新开垦地四种类型。青海省2000年完成退耕还林还草1.66万 hm~2,周边荒山造林种草3.8万 hm~2,2001年完成退耕还林还草1.66万 hm~2,荒山造林种草3.6万hm~2,2002年计划完成退耕还林还草和荒山造林种草各6万 hm~2。本文结合我省2000年以来实施的退耕还林还草工程,对民和、互助县的5个乡15户退耕
Qinghai Province, the existing arable land area of 678,000 hm ~ 2, of which 41.8 hm 2 sloping fields, slope cropland average grain output 156.1kg. According to the survey statistics, the total number of reclaimed farmland in the province is 365,000 hm 2, mainly including steep slopes over 25 degrees, dry land below 25 degrees, agricultural land at high altitude and newly reclaimed land since the 1980s. In 2000, Qinghai Province completed 16,600 hm ~ 2 of conversion of farmland to forestry and grassland and 38,000 hm ~ 2 in surrounding barren hills. In 2001, the land for returning farmland to forestry and forestry was 16,600 hm ~ 2 and 36,000 hm ~ 2 In 2002, it plans to complete 60,000 hm ~ 2 of returning farmland to forest and grassland and afforestation of barren hills. Combining with the project of returning farmland to forest and grassland since 2000 in our province,