2006年晚稻丰两优一号结实率偏低的气象成因分析  

Analysis of Meteorological Cause on the Late Rice Fructification Rate Underestimation

作　　者：陈国保 廖桂奇 

机构地区：[1]玉林市气象局,广西玉林537000

出　　处：《气象研究与应用》2007年第1期49-52,共4页Journal of Meteorological Research and Application

摘　　要：通过对玉林市2005-2006年晚稻的观测和调查资料与气象资料进行详细的对比分析后得知,2006年晚稻丰两优一号结实率明显偏低的主要原因是由于在幼穗分化的敏感期遇到了历史上罕见的低温天气过程。其它品种之所以受害不重,结实率基本正常,主要是由于不同品种对温度的敏感性存在差异,丰两优一号是来自气候和自然条件迥然不同的安徽,相对于广西、广东培育出来的品种对低温的敏感性要高得多,存在“水土不服”的现象。鉴于丰两优一号2006年晚稻引种玉林所造成的损失而得到一些启示,在以后的良种引进过程中,应加强气候可行性论证,做好农业气象灾害的评估工作,以最大限度地规避品种的潜在风险。丰两优一号在玉林作双季晚稻栽培能否成功,关键是要根据玉林的气候规律选择最佳的播种期,并且要加强管理,增强抗寒性。Comparing with the meteorological data and the late rice data observing and investigating, the meteorological cause which gave rise to the fructification rate underestimation is studied. Results show that formation of spike from the tillers in the fertility sensitive period met the duration of low temperature is the main reason. The different breed exist difference in the sensibility to the temperature. Reinforce climate feasibility demonstration in the fine breed introduces will select the breed as few as possible lurking risk. Whether this kind of late rice planting can succeed depend on selecting the best breed time according to the climate of the city of Yulin and enhancing the manage and winter resistance.

关 键 词：晚稻 丰两优一号 结实率偏低 气象条件 对策 

分 类 号：S162.8[农业科学—农业气象学]