不同播量对冬小麦产量及产量构成的影响

Effects of Sowing Rate on Grain Yield and its Components Factors of Winter Wheat

[目的]研究在最佳播期条件下的最佳播种量,以期为制定有利于发展冬小麦生产的栽培措施提供理论依据。[方法]以泰农18及济麦22为试验材料,通过不同播量播种来研究不同播期对冬小麦产量及产量构成因素的影响。[结果]随着播种量的增加,泰农18子粒产量降低,即小播量(R1)子粒产量达到最大值;随着播种量增加,济麦22子粒产量先升高后降低,中播量(R2)达到子粒产量最大值。随着播种量增加,泰农18及济麦22小麦穗数逐渐增加,大播量(R3)达到穗数最大值。随着播种量增加,泰农18及济麦22小麦穗粒数及及子粒千粒重逐渐减小,小播量(R1)达到穗粒数及子粒千粒重最大值。[结论]随着播种量增加,2个品种小麦穗粒数及子粒千粒重逐渐减小,即小播种量达到穗粒数及千粒重的最大值;随播种量增加,2个品种小麦穗数逐渐增加,大播量达到穗数最大值。

[Objective] The aim was to study the best seeding rate under the condition of the best sowing date,and provide theoretical basis for formulating cultivation measures that was conducive to the development of winter wheat.[Method]Effects of sowing rate on grain yield and its components factors of winter wheat was studied by sowing winter wheat at different rate with Tainong18 and Jimai22 as material. [Result]The results showed that grain yield of Tainong18 were decreased with the adding of sowing rate and peak value of grain yield was R1. Grain yield of Jimai 22 was increased firstly and then decreased with the adding of sowing rate and peak value of grain yield was R2. No. of spokes of winter wheat were increased with the adding of sowing rate and peak value of No. of spokes was R3. Grains per spike and 1 000-grain weight of winter wheat were decreased with the adding of sowing rate and peak value of grains per spike and 1 000-grain weight of winter wheat was R1. [Conclusion]With the adding of sowing rate,grain yield and 1 000-grain weight of two winter wheat varieties were decreased gradually and peak value of grain yield and 1 000-grain weight was R1. With the adding of sowing rate,No. of spokes of two winter wheat varieties were increased with the adding of sowing rate and peak value of No. of spokes was R3.