目前各地运用小麦叶龄指导田间管理,已取得了显著的增产效果,原理是根据品种的叶龄与幼穗分化的对应关系使栽培措施与小麦的生长发育相适应,为幼穗分化创造良好的环境条件,实现高产。但由于小麦基部叶片枯萎较早,一般到拔节前即枯死,这就为春季叶龄鉴别带来了困难,这里介绍一种由临沂市农业局观察总结出的“短叶长鞘法”,可简便而准确地区分小麦的冬春叶片。小麦的越冬心叶,在春季展开后,明显短 At present, the field management using wheat leaf age has achieved remarkable yield increase effect. The principle is that the cultivation measures are compatible with the growth and development of wheat according to the leaf age of the variety and the differentiation of young spikes, thus creating a good Environmental conditions, to achieve high yield. However, due to the early withered wheat base leaf, generally dead before jointing, which makes it difficult for the identification of spring leaf age here introduced by the Linyi City Bureau of Agriculture concluded that the “short-leaf sheath method” Can be easily and accurately distinguish between winter and spring wheat leaves. Overwintering heart of wheat leaves, after the start of the spring, was significantly shorter