水稻不同千粒重品种播种密度与播种量的关系  

Relationship between Sowing Density and Sowing Norm of Rice Varieties with Different Kilograin Weight

作　　者：王鹄生[1,2] 罗会明[1,2] 彭景武 

机构地区：[1]中国科学院长沙农业现代化研究所 [2]湖北省监利县农科所

出　　处：《农业现代化研究》1998年第1期40-43,共4页Research of Agricultural Modernization

基　　金：中国科学院武汉分院攻关项目;湖北省科委重大课题

摘　　要：本文以每平方米播种种子数为密度指标，对三个不同千粒重品种进行了四种密度处理，结果表明：播种密度与秧苗素质、千粒重、有效穗数、产量呈显著负相关关系，２５００粒／ｍ２处理的产量与其他处理及对照的产量差异达到显著水平。提出了三个品种的适宜播种密度为２５００粒／ｍ２。根据各处理的结果建立了播种量与千粒重和密度关系的方程式，Ｚ＝２．２２９３Ｘ＋０．０１８３Ｙ－６１．１７，只要确定品种的适宜播种密度，将该品种千粒重代入即可求出播种量。In this paper,the author,regarding the grain number of sowing seeds per square metre as the indexes of density,has made four density treatments on three rice varietieswith different kilograin weight. The result shows the relationships between sowing density and rice seeding quality,kilograin weight,number of effective panicles and yield are remarkablly negative.Difference between the yield of 2 500grain/m2 treatment and that of other treatments is remarkable.The proper sowing density of the three rice varieties is 2 500 grain/m2.The relational equation of sowing norm,kilograin weight and sowing density is established:Z=2.2293X+0.0183Y-61.17.After the proper sowing density of the variety is determined,the sowing norm can be worked out according to this equation.

关 键 词：水稻 千粒重 播种密度 播种量 品种 

分 类 号：S511.042[农业科学—作物学]