淮北小麦主茎干物质积累动态研究

摘要

[目的]研究淮北4个小麦新品种主茎干物质积累动态.[方法]4个小麦新品种分别为烟农19、豫农202、济麦22和淮P2-7.[结果]烟农19、豫农202、济麦22和淮P2-7小麦主茎和籽粒干物质积累呈Logistic曲线变化,主茎质量日增最大值点位于越冬始期前13 d和终花后5d左右,转折点位于拔节前4d和终花后11d,籽粒质量日增最大值点位于终花后13 d左右；穗粒质量曲线转折点为终花后9和18 d,千粒重曲线转折点为终花后7和20 d.[结论]该研究可为进一步了解淮北地区冬小麦干物质增长规律提供依据.%[ Objective] The purpose was to study dry matter accumulation dynamic of main stalk of four new wheat varieties from Huaibei. [ Method] Four new wheat varieties were Yannong 19, Yunong 202, Jimai 22 and Huai P2 - 7. [ Result] Four new wheat varieties'main stalk and seeds dry matter accumulation showed Logistic curve change, their main stalk maximum daily weight increase amount emerged at 13-days before overwintering beginning period and about 5 days after end flowering, and the turning point was at 4 days before jointing and 11 days after end flowering, their seeds maximum daily weight increase amount emerged at 13 days after end flowering; the turning point of seed weight per ear curve was at 9 days and 18 days, that of 1 000-grain weight was at 7 days and 20 days after end flowering. [Conclusion] The study provides a basis for deeply knowing winter wheat accumulation law in Huaibei area.