【摘要】 采用裂区设计对马铃薯(Solanum tuberosum)、玉米(Zea mays)套作结构中两个高低密度组合进行研究。结果表明,玉米高种植密度与马铃薯高种植密度组合,对马铃薯产量的形成具有极显著的交互作用,马铃薯最高产量为27 066.38 kg/hm2,玉米最高产量为7 744.39 kg/hm2;马铃薯最高净光合速率为11.54μmol/(m2·s),玉米最高净光合速率19.05μmol/(m2·s),与种植密度呈反比;净光合速率与叶绿素a的含量呈正比;不同的马铃薯/玉米套作种植密度对农艺性状株高、茎粗均具有显著作用,且存在部分交互作用,玉米种植密度主要影响马铃薯株高、玉米茎粗,而马铃薯种植密度对两者农艺性状均有影响;套作获得稳产、优质的最佳种植密度组合为玉米44 250株/hm2、马铃薯45 000株/hm2。更多还原

【Abstract】 Split plot design was used to study the high and low density combination of the potato(Solanum tuberosum) and corn(Zea mays) interplanting structure. The results showed that it had significant effect on potato yield formation under high corn density combined with high potato density. The highest production of potato was 27 066.38 kg / hm2. The highest production of corn was 7 744.39 kg / hm2. The highest net photosynthetic of potato 11.54 μmol / m2·s and corn 19.05 μmol / m2·s was inversely proportional to the density. Net photosynthetic rate was proportional to the content of chlorophyll a. Different density of potato and corn interplanting played a significant role on plant height and stem diameter. Corn density mainly affected the plant height of potato and the stem diameter of corn. The density of potato had the impact on agronomic traits of potato and corn. To obtain stable yield and high quality, the best combination of density was the corn of 44 250 plants / hm2 and the potato of 45 000 plants / hm2.更多还原