西南稻区水稻高温缓解技术研究

摘要

The heat resistance of 311 rice cultivars were identified in this paper, and 57 rice cultivars with high heat resistance were selected. Meanwhile, four pot experiments with different heat resistance rice cultivars were conducted, mainly including the effect of early earing of different rice cultivars by early sowing and transplanting, the relationship between fertilizer management and ability of heat resistance, the response of trace elements and plant regulators on rice seed setting rate under high temperature stress. Finally, the author put forward some techniques to relieve the high temperature stress, to guide the rice production of disaster prevention and miti-gation in Southwest China.%本文鉴定了311个水稻品种的耐热性，筛选出50多个耐或较耐热的品种。同时系统研究了不同品种适期早播早栽提早抽穗的效果，不同肥料运筹与水稻高温承受能力的关系，微量元素或植物调节剂在高温条件下对水稻结实率的影响等。最后提出了西南稻区水稻高温缓解技术要点，以指导该稻区水稻生产防灾减灾。