... interplantation 内植 interplanting of trees and crops 林粮间作 interpolation by central difference 中差插值法 ...
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主要结论如下：(1)林粮间作能较好地改善土壤物理和化学性质。
The main conclusions can be drawn as follows: (1) Intercropping could obviously improve soil physical and chemical properties.
采用野外调查与室内分析测定的方法，研究了苏北地区林粮间作地土壤理化性质。
Based on the field investigation and soil analysis, some soil physical and chemical properties in different agroforesty systems in northern area of Jiangsu province were studied.
分析了互助安定苗圃的杨树和小麦、油菜的林粮间作，结果表明，间作不仅能够获得双倍的经济收益，而且能获得更好的生态效益和社会效益。
Intercropping of popular, wheat and rape were analyzed in An-ding Nursery Huzhu. The results showed intercropping may obtain double economy effect ecology effect and society effect.
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