留苗密度与施肥对谷子品种保213产量及其相关性状的影响  

Effects of Density and Fertilization on Yield and Relative Characters of Millet Variety Bao 213

作　　者：赵国顺[1] 陈素省 王欢[1] 盛乐[1] 刘丽兵[1] 张凤路[2] 王文鑫[1] 

机构地区：[1]保定市农业科学研究所,河北保定071000 [2]河北农业大学农学院河北省作物生长调控实验室,河北保定071001

出　　处：《河北农业科学》2011年第12期9-13,共5页Journal of Hebei Agricultural Sciences

基　　金：国家谷子产业技术体系项目(CARS-07-12.5-B2)

摘　　要：为研究谷子新品种保213适宜的留苗密度和施肥量,2010～2011年在保定市农业科学研究所试验基地进行了留苗密度(22.5、45.0和67.5株/m2)、N肥施用量(7.5、22.5和37.5 g/m2)、P2O5施用量(7.5、22.5和37.5 g/m2)、K2O施用量(0.0、7.5和15.0 g/m2)4因素3水平正交试验,系统比较了不同处理对主要农艺性状及产量的影响。结果表明:留苗密度对保213产量、株高、成穗率及其相关性状有显著影响,随着留苗密度的增大,株高和产量显著增加,成穗率、穗长和穗粒重显著降低;保213产量随K肥施用量的增加而显著增加,与N和P肥施用量无明显影响;产量最高的因素组合为:留苗密度67.5株/m2,N肥施用量22.5 g/m2,P2O5施用量7.5 g/m2,K2O施用量15.0 g/m2。不同密度与施肥处理对生育期、出谷率和千粒重无显著影响。The suitable density and fertilizer rate for high yield of millet variety Bao 213 were studied from 2010 to 2011.4 factors orthogonal experimental design was set with the density(22.5,45.0 and 67.5 plants/m2),N application rate(7.5,22.5 and 37.5 g/m2),P2O5 application rate(7.5,22.5 and 37.5 g/m2) and K2O application rate(0.0,7.5 and 15.0 g/m2).The effects of different treatments on the yield and its relative characters were compared.The results showed that the density had significant influence on the yield,plant height,spike rate and relative characters.With the increasing of density,the plant height and yield increased,while the spike rate,spike length and weight of grains per spike decreased.Compared with N and P application rate,the yield increased significantly with the increasing of K level.When the density,N application rate,P2O5 application rate,and K2O application rate was 67.5 plants/m2,22.5 g/m2,7.5 g/m2,and 15.0 g/m2,respectively,the yield was higher.The density and fertilizer rate had no significant effects on the growth period,milled millet percentage and 1 000 grain weight.

关 键 词：谷子 密度 施肥 生长发育 产量 

分 类 号：S51[农业科学—作物学]