种植密度对水稻湿润覆膜栽培群体结构及产量的影响  

Effect of Planting Density on Population Structure and Yield of Rice under Wet Film Mulching

作　　者：孙日丹 孙海波 赵鑫[1] 贾立辉[1] 丁博 李善龙 李涛 曹铁华[1] 郭盛楠 张磊[1] 梁烜赫[1] SUN Ridan;SUN Haibo;ZHAO Xin;JIA Lihui;DING Bo;LI Shanlong;LI Tao;CAO Tiehua;GUO Shengnan;ZHANG Lei;LIANG Xuanhe(Jilin Academy of Agricultural Sciences,Changchun 130033;Da'an Tobacco monopoly,Baicheng 131300;Jilin Seed Management Station,Jilin 132013,China)

机构地区：[1]吉林省农业科学院,长春130033 [2]大安市烟草专卖局,吉林白城131300 [3]吉林市种子管理站,吉林吉林132013

出　　处：《东北农业科学》2024年第4期1-4,共4页Journal of Northeast Agricultural Sciences

基　　金：吉林省科技厅重大科技专项(20230302008NC);吉林省科技发展计划项目(20230508103RC);吉林省农业科技创新工程人才基金项目(CXGC2020RCG001)。

摘　　要：以吉林省大面积种植的水稻品种“吉宏6”为材料,研究湿润覆膜条件下不同种植密度对水稻群体结构及产量的影响。结果表明,覆膜能够显著提高水稻生育期内的有效积温,促进水稻早生快发。5个密度处理中,株行距为30 cm×13.33 cm(T_(1))、30 cm×16.67 cm(T_(2))、30 cm×20.00 cm(T_(3))3个处理的产量超过了500 kg/667 m^(2),T_(1)处理的产量最高,达到592.09 kg/667 m^(2)。T_(1)、T_(2)、T_(3)处理的叶面积指数大,干物质积累多,单位面积有效穗数多,产量高;T5处理的单穴分蘖数多,但单位面积有效分蘖数少,产量低。以获得较高的产量为前提,综合分蘖优势、群体结构、倒伏现象,水稻湿润覆膜条件下的适宜插秧密度为(30 cm×16.67 cm)~(30 cm×20.00 cm)。Effects of different planting densities on population structure and yield were studied under the condition of moist film mulching using Jihong 6,a large-scale rice variety planted in Jilin Province.The results showed that plastic film mulching could increase the effective accumulated temperature during the rice growth period significantly and promote the early growth and rapid development of rice.Among the 5 density treatments,the yield of 3 treatments with row spacing of 30 cm×13.33 cm(T_(1)),30 cm×16.67 cm(T_(2)),30 cm×20.00 cm(T_(3))exceeded 500 kg/667 m^(2),and the yield of T_(1)was the highest,reaching 592.09 kg/667 m^(2).T_(1),T_(2)and T_(3)had larger LAI,more dry matter accumulation,more effective panicles per unit area,and also reached high yield.T_5 treatment had more tillers per hole,but less effective tillers per unit area and low yield.The results showed that,on the premise of obtaining higher yield,population structure and lodging phenomenon,the optimum transplanting density of rice under the condition of wet film mulching is(30 cm×16.67 cm)-(30 cm×20.00 cm).

关 键 词：水稻 种植密度 湿润覆膜 群体结构 产量 影响 

分 类 号：S511.04[农业科学—作物学]