通过文献检索共获得52篇缓解夏玉米受高温影响的相关试验性文献，以不采取任何措施为对照，基于Meta分析方法定量研究高温胁迫下采取不同应对措施对夏玉米的影响。结果表明，高温胁迫下，选用耐热型夏玉米品种对产量的提升效果最优，达27.62%，选用耐热性品种主要提高夏玉米的授粉结实能力。施用植物生长调节剂、施肥和调整播期可分别使夏玉米产量提高23.55%、19.15%和13.15%，施用植物生长调节剂主要影响穗位叶抗氧化酶活性，施肥对穗位叶净光合速率的提高效果最突出。综合分析表明，选用耐热型品种是缓解夏玉米高温热害最直接有效的方法，在此基础上可通过施用植物生长调节剂、施肥和调整播期进一步缓解高温所带来的不利影响。

This study aims to quantify the effect of different response measures on high temperature in summer maize by Meta-analysis method with no measures as control. The results showed that, the selection of heat-resistant varieties had the best effect of enhancing summer maize yield. Compared with the heat-sensitive varieties, the selection of heat-resistant varieties had the most positive effect on the pollination and setting capacity. The application of plant growth regulators mainly affected yield and activities of oxidase, while fertilization mainly affectednet photosynthetic rate. The selection of heat-resistant varieties is the most effective approach to alleviate the heat damage of summer maize. Additionally, applying plant growth regulators, fertilizing, and adjusting the sowing period can further alleviate the adverse effects of heat stress.

S513.01

国家自然科学基金项目(41977410)、国家重点研发计划课题(2019YFC1510205)