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2001~2003年连续对8个不同类型的玉米杂交种进行了高矮立体间作种植比较试验,结果表明:(1)适合密植的紧凑株型杂交种和稀植大穗型杂交种高、矮间作种植均比单作种植产量显著提高,F值分别为5.10,6.31,5.19,4.86;株高、穗位高比单作稍有降低;抽雄、散粉、吐丝和成熟期均比单作提早;出籽率、百粒重均比单作高。(2)高、矮每隔2行、4行或每隔6行间作产量间无显著差异。(3)玉米杂交种高、矮间作种植的增产原因是有效地协调了群体与个体之间光合性状间彼此致约的矛盾,提高了光合作用效率。
From 2001 to 2003, eight different types of maize hybrids were continuously and contrastly cultivated. The results showed that: (1) compact and intensive spike hybrids, The yield of Fusarium graminearum was significantly higher than that of single-cropping, with F values of 5.10, 6.31, 5.19 and 4.86, respectively. The plant height and ear height were slightly lower than those of single-cropping. Seed rate, 100-weight than single high. (2) There is no significant difference in output between high and low lines every 2 lines, 4 lines or every 6 lines. (3) The reason for the yield increase of high and short intercropping maize hybrids is to effectively coordinate the contractual contradictions among photosynthetic traits between groups and individuals, and improve the photosynthesis efficiency.