【摘要】 为了解夏秋屋顶菜园高温对菜心种植的影响,以4个耐热性有差异的菜心品种为材料,分析屋顶高温条件和露地对照下菜心产量及农艺性状表现。结果表明,屋顶高温胁迫会导致薹粗、主薹质量等指标表现下降,平均下降幅度为10.85%、14.08%,并引起菜心产量和生物量下降14.15%、18.00%。但不同品种差异较大,‘四九-19’菜心产量与生物量仅下降4.27%、10.76%,与对照差异不显著;而‘特青迟4号’菜心产量与生物量分别下降24.28%、29.27%,与对照差异极显著。株高、薹长、叶片数、叶片宽、叶柄长、叶柄宽等性状指标在屋顶高温胁迫下与对照差异不显著。综合看来,‘四九-19’菜心在屋顶高温胁迫下各性状表现较好,可在夏秋屋顶菜园中推广应用。更多还原

【Abstract】 Four flowering Chinese cabbage cultivars were evaluated to study the influences of heat stress on agronomic traits at summer roof garden. The results showed that the sprouts diameter and sprouts weight were reduced under high temperature, the average descend range was 10.85%, 14.08% respectively, which caused the decrease of yields and biomass in roof garden, the descend range was 14.15%, 18.00% respectively. Different varieties exhibited great differences, the descend range of ‘Sijiu-19’ was found no significant difference between roof and CK, while the difference of‘Teqingchi’showed significance difference in yields and biomass when compared with CK. No significant decrease were found in the traits of plant height, sprouts height, plant leaves, largest leaf width, petiole length and petiole width between roof and CK under high temperature. In conclution,‘Sijiu-19’ showed the best high temperature resistance, it could be applied in the summer roof garden.更多还原