摘要： 1981～1984年,选用代表不同生态类型的25个小麦品种,在大田进行分期播种.通过分析温光等主要生态因子与小麦生长发育的关系,建立了各品种主要发育阶段的温光模型:播种至出苗为G=104.4751/（T-1.1032）,出苗至二棱、出苗至拔节为V=a+bG+cP_t1,二棱至抽穗、拔节至抽穗为V=a+bT+cL.文中认为,播种至出苗的日数（G）既能反映当时的温度条件,又可表示萌发时的“田间春化效应”;温光积（Ptl）则给“温度与光照之间存在明显的互补作用”找到了量的表达基础;因此,建模时采用这两个变量,是很有意义的.

关键词: 小麦, 温度, 日长, 发育模型

Abstract: Since 1931-1984,25 cultivars of wheat (Triticalm acsti,aann I,.)of different ecological types,s"ere planted at different dates in the Experimental Station of Shanxi Agricultural Uni-ersity,Taigu Shanxi。 Under natural conditions,the relat:onship between development of wheat and different le"els and combinations of main ecological factors were studied. The nonlinear model betv: een the number of days of emergence (G)and the the daily average temperature (T) is G=104.4751/(T-1.1032).The model of tem-perature and photoperiod for emergence to doable ridges or emergence to stem extension is V=a+bG+cPtl,for double ridges to heading or stem extension to heading is V=a+bT+cI.I'he biological meaning of models have been dis-Cussed in this paper.

Key words: Wheat, Temperature, Daylength, Model of dewelopment