播量播期对不同小麦品种产量的影响.pdf

山东农业大学硕士专业学位论文 1 中文摘要小麦是山东省的重要粮食作物。小麦产量的高低主要取决于品种本身特性,但又受栽培条件的影响。本研究以济麦 22 号、烟农 24 、烟 2415 和洲元 9369 四个小麦品种为试材,研究不同播期和播量对不同品种产量和产量构成因素的影响,为各品种高产提供最佳的播期和播量指标。这对充分发挥小麦品种潜力具有一定的理论和实践意义。研究的主要结论如下: 1 、在低播量条件下,产量随播种期的后延而呈下降趋势,济麦 22 和烟 2415 在 10 月 5 日播种可获得较高的产量,烟农 24 在 10 月 12 号至 10 月 19 号可获得较高产量,洲元 9369 对播期不敏感;在适宜播量条件下,济麦 22 和烟 2415 在 10 月 5 号播种可获得高产,烟农 24 和洲元 9369 在 10 月 12 号播种可获得高产;在高播量条件下,济麦 22 、烟农 24 和洲元 9369 在 10 月 12 号播种可获得高产,烟 2415 在 10 月 5 号播种可获得高产。 2 、随着播期的延迟, 4 个品种的单位面积成穗数和千粒重均呈下降趋势;济麦 22 、烟 2415 和洲元 9369 的穗粒数随播期的后延迟呈上升趋势,本试验设计的 4 个播期对烟农 24 和洲元 9369 的产量影响不大。播期对单位面积穗数的影响不同品种间的差别最高可达 26% ,但对穗粒数和产量的影响均在 14% 以下。关键词:小麦;品种;播期;播量;产量不同播量条件下不同播期对小麦制种产量的影响 2 The Effect of Sowing-date and Quantity on Yield about Different Wheat Varieties Abstract Wheat is an important cereal crop in Shandong Province. Wheat yield is mainly decided by its variety characteristics, and also affected by cultivation conditions. In this study, four wheat varieties of Jima i 22, Yannong 24, Yan 2415 and Zhouyuan 9369 were used to research the effect on yield and ponents of different wheat varieties by different sowing dates and quantities to dete rmine the optimum sowing dates and quantities for the four varieties. It was of importantly th eoretical and practical significance to draw out potential of the wheat varieties. The coclusions of the study were presented as follows. 1. In the condintion of low sowing quantity, wheat yield decreased with deley of sowing date. High yield of Jimai 22 and Yan 2415 was on October, 5, and October, 12 to 19 for that of Yannong 24, and sowing date hard ly had effect on Zhouyuan 9369. High yield of Jimai 22 and Yan 2415 under moderate sowing qu antity was on October, 5, and October, 12 for that of Yannong 24 and Zhouyuan 9369. In th e condintion of high sowing quantity, high yield of Jimai 22, Yannong 24 and Zhouyuan 9369 wa s on October, 12, and October, 5 for that of Yan 2415. 2. With deley of sowing date, the panicle number per unit area and