近年来,新郑市小麦生产发展很快,已从中低产水平跨入到高产阶段。由于小麦栽培条件的改善,产量构成因素发生了很大变化,亩穗数已不是影响产量的限制因素,它可以通过运用肥、水调控来提高。而千粒重和穗粒数的年际间差异比较大,在小麦生育后期如 In recent years, wheat production in Xinzheng City has developed rapidly and has stepped into the high-yield stage from the level of middle-low yield. Due to the improvement of wheat cultivation conditions, the yield components have undergone tremendous changes. The number of ears per mu has not been the limiting factor for the yield. It can be improved through the application of fertilizer and water regulation. However, the annual variation of 1000-grain weight and grain number per spike is relatively large, as in the later stage of wheat growth