以基因型不同、表现型有差异的两个玉米单交种进行2∶2间作，试验表明：玉米不同品种的合理间作可显著提高产量，增产幅度可达10%；增产的主要原因在于群体结构的改善，当代杂种优势所起的作用十分有限。

The inter-planting experiment using two kinds of maize hybrids of different genes and phenotypes by the pattern of 2∶2 was carried. The study indicated that the reasonable inter-planting of different maize varieties could enhance the yield remarkably which increased by 10%. The improvement of the community structure was the main reason for yield-increasing. And the effect of heterosis of F0 generation was extremely limited.

辽宁省自然科学基金项目(20032076)