杂交稻的秋季制种与气象

• 作 者: 任久江
• 机 构: 西南农学院农业气象教研组,
• 出 处: 农业气象
• 发表日期: 1981年04期
• 关键词: 播差期 花期相遇 杂交稻制种 气候变化规律 杂交制种 杂交亲本 积温 生长发育规律 制种生产 抽穗扬花期

杂交稻制种技术的关键是花期相遇,花期能否相遇,决定于播差期的推算是否准确,播差期准确,还必须以科学的栽培管理为保证。使杂交制种既做到花期稳定相遇又达到高产优质,把制种技术提高到一个新的阶段。为了使花期相遇好,必须研究制种地区的气候变化规律和杂交亲本在当地自然环境下的生长发育规律,并运用这些规律来确定夏制或秋制;确定安全齐穗期和准确推算播差期,实

Hybrid rice seed production technology is the key to flowering encounter, flowering can meet, depends on the sowing date is accurate projections, sowing accurate, but also must be scientific cultivation and management as a guarantee. So that the hybrid seed production not only achieve stability and flowering to achieve high yield and quality, the seed production technology to a new stage. In order to meet the flowering period, it is necessary to study the law of climate change in the seed production areas and the growth and development of hybrid parents in the local natural environment, and use these rules to determine the summer or fall; determine the heading date of safe and accurate sowing Period, real