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通过不同栽植密度分布 2× 8(m)和 2× 2× 14(m) ,连续进行间作 (年限 )和收益大小的研究。结果表明 ,2× 2× 14(m)是窄冠幅杨树品种培育胶合板材的理想密度分布 ,农作物可间作 6年 ,牧草互间作 5年。总间作收益达 5 2 742 .4元 / hm2。林地农林产品总收入和利润均可达到和超过单纯农业的收入且生态效益显著。
The intercropping (life span) and income size studies were conducted continuously with different planting densities of 2 × 8 (m) and 2 × 2 × 14 (m). The results showed that 2 × 2 × 14 (m) was the ideal density distribution of poplar cultivars with narrow crown width. Crops could be intercropped for 6 years and pasture for 5 years. The total intercropping revenue amounted to 5 2 742.4 yuan / hm2. The gross income and profit of forestland agro-forestry products can both reach and surpass the income of simple agriculture and have significant ecological benefits.