小麦播期对穗粒结构的影响分析

Analysis on the Relationship between seed-times and Spike-grain Structure

[目的]通过不同小麦品种播期试验,研究播期对里下河地区小麦穗粒结构的影响。[方法]主要采用分期播种的方法,选择里下河地区的当家品种扬麦158、苏麦6号、宁麦9号进行种植试验。[结果]有效穗数,苏麦6号和宁麦9号接近,扬麦158较低。实粒数,苏麦6号和扬麦158接近,宁麦9号较多。千粒重,苏麦6号〉扬麦158〉宁麦9号。[结论]在10月25日-30日播种,播期对有效穗数和实粒数的影响较小;播期对千粒重的影响不明显。综合考虑小麦穗粒结构与播期的关系,尤其要达到高产优质的栽培目标,当地小麦的播期安排在10月25日-11月4日最佳。

[Objective] Used bleeding experiment,Analysis on seed-times to effect with Spike-grain Structure in Lixiahe district of Jiangsu Province.[Method] Main way was to use by stages seed-times,bleeding experiment of Sumai 6 and Ningmai 9 and Yangmai 158 in lixiahe district of Jiangsu Province.[Result] The effective spike of Sumai 6 is same Ningmai 9,it is higher than Yangmai 158.The grain of Sumai 6 is same Yangmai 158,it is lower than Ningmai 9.The weight of grain of Sumai 6 is more than Yangmai 158 and more than Ningmai 9.[Conclusion]The seed-times effects low with the effective spike and the grain to bleed from twenty-fifth October to thirtieth October,it effects the weight of the grain lower.Considered the relationship between wheat Spike-grain structure and seed-time,the ideal wheat seed-times is from twenty-fifth October to forth November for planting aim of high yield and quality.