山东农业科学2017，Vol.49Issue(6)：41-47,7.DOI:10.14083/j.issn.1001-4942.2017.06.009
播期和密度对冬小麦普冰151籽粒灌浆特性及产量的影响
Effects of Sowing Date and Planting Density on Grain-Filling Characteristics and Yield of Winter Wheat Cultivar Pubing 151
摘要
Abstract
Taking high-quality strong-gluten wheat cultivar Pubing 151 as test material,setting 3 sowing dates, October 3,October 8,October 13, and 4 planting densities, 1 350 thousand seedlings per hectare, 1 950 thousand seedlings per hectare,2 550 thousand seedlings per hectare,3 150 thousand seedlings per hectare,the effects of sowing date and planting density on the grain filling characteristics and yield of Pubing 151 were researched.The results showed that the sowing date and planting density had significant impacts on population growth and decline of stems and leaf area index at various growth stages.The filling process was in line with the orthogonal polynomials Cubic equation in different treatments.The maximum grain-filling rate and average grain-filling rate at the grain-filling stage and the average grain-filling rate at the rapid increasing stage decreased with the delay of sowing date, and increased with the increase of planting density.With the delay of sowing date, the spike number per hectare and thousand-grain weight of Pubing 151 reduced,the yield could not be improved,and the grains per spike increased first and then decreased.The different density had very significant impacts on yield,spike number per hectare,grains per spike and thousand-grain weight.The spike number per hectare increased with the increase of planting density,while the grains per spike and thousand-grain weight decreased with the increase of planting density.The sowing date, planting density and the interaction effects had very significant or significant influence on yield and yield components of Pubing 151.Treatment A1B2 had the highest grain yield of 8 150.33 kg/hm2,which were very significant different with the other treatments except A1B1 and A2B3.Therefore,the suitable sowing date and planting density of Pubing 151 was October 3 with 1 350 to 1 950 thousand seedlings per hectare or October 8 with 2 550 thousand seedlings per hectare.关键词
小麦/普冰151/播期/密度/灌浆特性/产量Key words
Wheat/Pubing 151/Sowing date/Planting density/Grain-filling characteristics/Yield分类
农业科技引用本文复制引用
刘芳亮,任益锋,王卫东,党忠,张保军..播期和密度对冬小麦普冰151籽粒灌浆特性及产量的影响[J].山东农业科学,2017,49(6):41-47,7.基金项目
西北农林科技大学农业科技推广基金项目(Z222021211) （Z222021211）
