有机水稻合理种植密度研究  

Study on the rational planting density of organic rice production

作　　者：杨震道 刘根红[1] Yang Zhendao;Liu Genhong(School of Agriculture,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《农业科学研究》2020年第2期1-6,共6页Journal of Agricultural Sciences

基　　金：宁夏回族自治区重点研发项目(2019BBF02007)。

摘　　要：在有机栽培条件下,探讨有机水稻不同种植密度与产量的关系。试验地点为宁夏兴唐米业灵武市梧桐树乡北滩村有机水稻生产基地,试验采用随机区组设计,6个水平,3次重复,小区面积29.3 m^2。其中处理1:行穴距23.1 cm×13.2 cm,每穴4苗,28 874穴/667 m^2;处理2:行穴距26.4 cm×13.2 cm,每穴4苗,25 265穴/667 m^2;处理3:行穴距29.7 cm×13.2 cm,每穴4苗,22 458穴/667 m^2;处理4:行穴距23.1 cm×13.2 cm,每穴8苗,28 874穴/667 m^2;处理5:行穴距26.4 cm×13.2 cm,每穴8苗,25 265穴/667 m^2;处理6:行穴距29.7 cm×13.2 cm,每穴8苗,22 458穴/667 m^2。结果表明:不同播种密度下,处理1获得了较高产量,此种植密度可作为有机水稻合理的群体密度,其秧苗返青率高、分蘖较多、成穗率高,群体结构苗茎穗比例为1.00∶2.76∶2.16,相较于其他处理其稻穗实粒数、千粒质量、收获穗数均表现出一定优势,产量可达到8 395.5 kg/hm^2。This article explores the relationship between different planting densities and yields of organic rice under organic cultivation conditions.The test site is an organic rice production base which belongs to Ningxia Xingtang Rice Industry in Beitan village,Wutongshu township,Lingwu city.The test adopts a random block design,6 levels,3 repetitions,and the plot area is 29.3 m^2.Thereinto,treatment 1:the distance between rows is 23.1cm×13.2cm,4 seedlings per hole,28874 holes/667m^2;treatment 2:the distance between rows is 26.4cm×13.2cm,4 seedlings per hole,25265 holes/667m^2;treatment 3:the distance between rows is 29.7cm×13.2cm,4 seedlings per hole,22458 holes/667m^2;treatment 4:the distance between rows is 23.1cm×13.2cm,8 seedlings per hole,28874 holes/667m^2;treatment 5:the distance between rows of holes is 26.4cm×13.2cm,8 seedlings per hole,25265 holes/667m^2;treatment 6:the distance between rows is 29.7cm×13.2cm,8 seedlings per hole,22458 holes/667m^2.The results showed that treatment 1 obtained higher yield under different planting densities.This planting density can be used as a reasonable population density for organic rice,with high seedling greening rate,more tillers and higher ear formation rate.The ratio of stems and ears of the population structure seedlings is 1.00:2.76:2.16.Compared with other treatments,the number of real grains,thousand-grain quality,and harvested ears all showed certain advantages,whose output can reach 8395.5 kg/hm^2.

关 键 词：有机水稻 合理密度 群体结构 

分 类 号：S318[农业科学—作物栽培与耕作技术]