山西农业大学学报（自然科学版）2017，Vol.37Issue(5)：305-311,7.
不同年份小麦匀播与播种量对麦棉套作小麦产量构成的影响
Effects of broadcasting and seeding rates on wheat yield components in different years under wheat-cot-ton intercropping system
摘要
Abstract
[Objective] This study aimed to determine the optimum sowing method and seeding rates for wheat under wheat-cotton intercropping system.[Methods] The experiments were conducted in Quzhou station during 2014-2015 and 2015-2016.A split plot experiment involving two sowing methods(broadcasting and drilling) and four seeding rates(187.5kg· hm-2,225.0kg· hm-2,262.5kg· hm 2,300.0 kg· hm-2) was designed and basic seedlings,spike number per unit area,wheat grains per ear,thousand-grain weight and yield were investigated.[Results] The spike number per unit area,wheat grains per ear,thousand-grain weight and yield of broadcasting were increased significantly for inner rows compared with drilling.The spike number per unit area was decreased but thousand-grain weight was increased greatly of broadcasting for marginal rows in drought year(2016),and the other yield traits were almost equal to drilling.The yield of broadcasting was increased by 5.1％ and 5.7％ compared with drilling in 2015 and 2016 respectively.With the increase of seeding rates the spike number per unit area increased but wheat grains per ear and thousand-grain weight decreased,and in rainy year decreasing seeding rates was favorable to yield but in drought year increasing seeding rates was beneficial to yield.The wheat yield was stable when seeding rate was from 225.0 kg·hm-2 to 262.5 kg·hm-2.[Conclusion] Adopting broadcasting with seeding rate from 225.0 kg·hm-2 to 262.5 kg·hm-2 was appropriate for wheat-cotton intercropping system.关键词
麦棉套作/匀播/条播/产量构成Key words
Wheat-cotton intercropping system/Broadcasting/Drilling/Yield components分类
农业科技引用本文复制引用
王树林,王国平,王燕,张谦,冯国艺,雷晓鹏,林永增,梁青龙..不同年份小麦匀播与播种量对麦棉套作小麦产量构成的影响[J].山西农业大学学报（自然科学版）,2017,37(5):305-311,7.基金项目
科技部支撑计划项目(2013BAD05B00) （2013BAD05B00）
农业部行业专项(201503121) （201503121）
