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首页> 外文期刊>Field Crops Research >Effect of sowing time and seeding rate on yield components and water use efficiency of winter wheat by regulating the growth redundancy and physiological traits of root and shoot
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Effect of sowing time and seeding rate on yield components and water use efficiency of winter wheat by regulating the growth redundancy and physiological traits of root and shoot

机译：播种时间和播种率对冬小麦产量分配和水分利用效率的影响通过调节根和芽的生长冗余和生理性状

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摘要

A field experiment was conducted to explore the effect of different sowing time and seeding rate on yield components and water use efficiency (WUE) of winter wheat by regulating the growth redundancy and physiological traits of root and shoot. Winter wheat sowing was performed on Oct.12 (T1), Oct.22 (T2), Nov.3 (T3), respectively. There were three treatments of different seeding rates, i.e. 112.5 kg hm(-2) (DI), 150 kg hm(-2) (D2) and 225 kg hm(-2)(D3) in each sowing time. The results showed that sowing time and seeding rate significantly influenced the morphological and physiological characteristics of winter wheat. Plant height, ineffective tiller number, leaf area and root biomass decreased significantly along with the delay of sowing date. Plant height, ineffective tiller number and root biomass increased significantly and leaf area decreased significantly with increasing seeding rate. Under the same seeding rate condition, T1 had the highest number of ineffective tiller, and T3 had the lowest one. Delayed sowing (T2 and T3) increased significantly root activities and leaf photosynthetic rate (P-n) in the late growing stage, and decreased significantly root respiration rate (R-root) per unit area of wheat. In the same sowing time treatment, root activities and leaf P-n decreased significantly and increased significantly with the increase of seeding rate; however, seeding rate had no effect on root activity and leaf P-n in T3 treatment. Grain yield decreased significantly in T1 and increased significantly in T3 with the increase of seeding rate, and it was the highest in D2 and the lowest in D1 in T2 treatment. Delayed sowing lowered significantly soil water consumption of crop. Under the same sowing time condition, soil water consumption increased significantly as seeding rate increased. WUE decreased significantly with the increase of seeding rate in T1 and T2 treatments. In two test years, T2D2 had highest grain yield and WUE, and T3D1 had lowest grain yield and WUE. The interaction of sowing time and seeding rate also had significant effect on soil water consumption, grain yield and WUE. It is clear that appropriate sowing time and seeding rate (T2 Treatmeat) can increase grain yield and WUE of winter wheat by regulating the growth redundancy and physiological traits of root and shoot, but excessive reduction of vegetative organs (T3 Treatmeat) can affect crop production.
机译：进行了一个田间实验，以探讨不同播种时间和播种率对冬小麦的产量组分和水利用效率（WUE）的效果通过调节根和芽的生长冗余和生理性状。冬季小麦播种分别于10月12日（T1），11月22日（T2），11月3日（T3）。在每个播种时间中有三种不同的播种速率，即112.5kg HM（-2），150kg HM（DI），150kg HM（-2）（D2）和225kg HM（D3）。结果表明，播种时间和播种率显着影响冬小麦的形态学和生理特性。随着播种日期的延迟，植物高度，无效的分蘖数，叶面积和根生物量随着播种日期的延迟而显着下降。植物高度，无效的分蘖数和根生物量显着增加，随着播种率的增加，叶面积显着下降。在相同的播种率条件下，T1具有最多的无效分蘖数，T3具有最低的剪辑。延迟播种（T2和T3）在晚期生长阶段的显着根系活性和叶片光合速率（P-N），并每单位小麦的根部呼吸率（R根）下降。在相同的播种时间治疗中，根活和叶P-N随着播种率的增加而显着下降，并显着增加;然而，在T3处理中，播种率对根活率和叶片P-N没有影响。 T1的T1在T1中显着下降，随着播种率的增加，T3中的颗粒产量显着增加，并且在T2处理中的D2中最低，D1中最低。延迟播种降低了土壤耗水量的作物。在同样的播种时间条件下，土壤耗水量随着播种率的增加而显着增加。随着T1和T2治疗的播种率的增加，WUE显着下降。在两个测试年份中，T2D2具有最高的谷物产量和WUE，T3D1具有最低的谷物产量和WUE。播种时间和种子率的相互作用对土壤耗水，粮食产量和电力造成的影响也具有显着影响。很明显，通过调节根部和芽的生长冗余和生理性状，较适当的播种时间和播种率（T2 Temicatemeat）可以增加谷物产量和冬小麦的电影费，但营养器官的过度减少（T3.治疗）可以影响作物生产。

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  • 来源
    《Field Crops Research》 |2018年第2018期|共9页
  • 作者

    Ma Shou-Chen; Wang Tong-Chao; Guan Xiao-Kang; Zhang Xia;

  • 作者单位

    Henan Agr Univ Agron Coll Collaborat Innovat Ctr Henan Grain Crops Zhengzhou 450002 Henan Peoples R China;

    Henan Agr Univ Agron Coll Collaborat Innovat Ctr Henan Grain Crops Zhengzhou 450002 Henan Peoples R China;

    Henan Agr Univ Agron Coll Collaborat Innovat Ctr Henan Grain Crops Zhengzhou 450002 Henan Peoples R China;

    North China Univ Water Resources Elect Power Inst Environm &

    Municipal Engn Zhengzhou 450011 Henan Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农业科学;
  • 关键词

    Winter wheat; Sowing time; Seeding rate; Growth redundancy; WUE;

    机译：冬小麦;播种时间;播种率;生长冗余;WUE;

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