吉林省东部山区林地面积占60％以上,其中有相当面积是森林。但由于多年的只采不育,森林面积逐年减少。近年来,各林业局已大范围内向营林方面转化。目前,全省林区年均植树造林而积约有14万公顷左右,坡度在25°以下的面积约占25％(3.5万公顷)。利用这些幼龄林木空间种植大豆,不仅是发展浅山区林业的重要措施,也是今后不与粮争地,发展大豆生产的行之有效的途径。 In the eastern mountainous area of ​​Jilin Province, the area of ​​forestland accounts for more than 60%, of which a considerable area is forest. However, due to years of only sterile, forest area decreased year by year. In recent years, various forestry bureaus have been transformed into forests in a wide range. At present, there are about 140,000 hectares of trees planted annually in afforestation areas in the whole province and about 25% (35,000 hectares) in areas below 25 degrees. The use of these young trees and space to grow soybeans is not only an important measure for developing forestry in shallow mountains, but also an effective way to develop soybean production in the future without contending with the grain.