西南区玉米主推品种推广面积与生育期和出籽率的相关性解析

[目的]揭示四川省主推玉米品种的农艺学特征，探讨生育期、出籽率与推广应用面积的相关性。[方法]2009～2011年四川省年均推广面积超过6666．67hm。的玉米品种多达44个，其中大部分属于外引玉米杂交种，审定时间较早，而本地选育的杂交种则推广面积较低。对这些重要杂交种的生育期、出籽率与推广面积进行相关性研究。[结果]出籽率与推广面积呈显著正相关，相关系数为0．20；生育期则主要集中在115～120d。[结论]该研究可为南方玉米育种及引种提供指导。

Study on Relationship between Seed Ratio,Growth Period and Promotion Areas of Main Maize Cultivars in the Southwest of China

[Objective] The aim was to reveal the agronomic traits of main maize cultivars in Sichuan Province, and discuss the relation between growth period, grain ratio and the promotion areas. [ Method ] More than 44 maize eultivars were widely used in Sichuan Province in 2009 -2011 and their promotion areas were more than 6 666.67 hmz, most of which were introduced out of Sichuan Province and approved earlier, while the promotion areas of the local hybrid eultivars were lower. The relation between these 44 important hybrid eultivars＇ growth period, grain ratio and their promotion areas were studied. [Restdt] There were significant correlation between grain ratio and promotion areas with r =0.20; and most widely used maize eultivars＇ growth period were 115 -120 d. [Conclusion] The study provides a guidance for maize breeding and introduction of South Area.