摘要
为探明单粒精播模式下密度对不同类型花生产量及干物质积累的影响,以‘铁引花1号’和‘唐A825’为试验材料,设置7.5万穴/hm^2、15万穴/hm^2、22.5万穴/hm^2、30万穴/hm^2、37.5万穴/hm^2、18万穴/hm^2(对照)6个种植密度。结果表明:单播条件下适当密植有利用花生产量的提高,大粒型‘铁引花1号’在15万株/hm^2时产量最佳,比对照增产15.8%。中小粒型‘唐A825’在22.5万株/hm^2时产量最佳,比对照增产26.5%。生育前期密度对植株各器官干物质积累影响不明显,生育后期群体产量、最大阶段积累量、最大日积累量、叶、茎、柄的干物质积累量等随种植密度的增加呈峰值变化,单株的干物质积累量、输出率、贡献率等均随种植密度的增加显著减少。
To find the effect of planting density on peanut yield and dry matter accumulation with single-seed precision sowing mode,'Tieyinghua 1'and 'TangA825'were used as research materials.6 planting densities of 7.5×10^4,15×10^4,22.5×10^4,30×10^4,37.5×10^4and 18×10^4 plants/hm^2 were set up.The results showed that proper increase of planting density under single-seed precision sowing was good for peanut production.The large-seed type ‘Tieyinghua 1'had the best yield at 15×10^4plants/hm^2,15.8%more than that of the control. The medium and small-seed type 'TangA825'had the best yield at 22.5×10^4 plants/hm^2,26.5% more than that of the control.Planting density did not have obvious influence on the dry matter accumulation at the earlier stage,and at the later stage,the group yields,the maximum stage accumulation,the maximum daily accumulation,the dry matter accumulation of leaves,stems and stalks had a peak change with the increase of planting density,while the dry matter accumulation,output rate,contribution rate of single plant decreased significantly with the increase of planting density.
作者
修俊杰
张伯岩
Xiu Junjie;Zhang Baiyan(Tieling Academy of Agricultural Sciences,Tieling 112000,Liaoning,China)
出处
《农学学报》
2018年第11期9-15,61,共8页
Journal of Agriculture
基金
特色粮油新品种选育及优质高效生产技术集成与示范"国家现代农业产业技术体系花生产业辽宁创新团队项目"(2016007022)
关键词
花生
密度
产量
单粒精播
干物质积累
Peanut
Plant density
Yield
Single-seed Precision Sowing
Dry Matter Accumulation