播种量对水稻旱直播产量的影响研究  

Study on the Effect of Seeding Rate on Yield of Dry Direct-seeding Rice

作　　者：滕祥勇 李鹏志[1] 林秀云[1] 黄好文[1] 王金明[1] 孙强[1] TENG Xiang-yong;LI Peng-zhi;LIN Xiu-yun;HUANG Hao-wen;WANG Jin-ming;SUN Qiang(Rice Rearch Institute,Jilin Academy of Agricultural Sciences,Siping Jilin 136100,China)

机构地区：[1]吉林省农业科学院水稻研究所

出　　处：《北方水稻》2019年第5期13-16,共4页North Rice

基　　金：国家重点研发计划（2017YFD0300608）

摘　　要：本研究利用3份水稻材料,分析了其在旱直播条件下的适宜播种量。结果表明:随着播种量的增加,水稻生育期变短,株高逐渐变矮,单株分蘖量减少;JZ-1、JZ-3、JZ-5三份材料理论产量均随播种量的增加呈现抛物线趋势,在播种量200 kg/hm2条件下达到最高值,有效穗数逐渐增加,穗长、穗实粒数与千粒重小幅上升总体呈降低趋势。Three rice materials were used to analyze the suitable sowing rate of rice under the condition of dry direct-seeding.The results showed that,with the increase of seeding rate,the growth period became shorter,the height became shorter and the valid tillering rate per plant decreased.The theoretical yield of JZ-1,JZ-3,JZ-5 showed a parabola trend with the increase of sowing rate,and reached the highest value under the condition of 200 kg/hm2,the valid panicle number increased gradually,the panicle length,the grain number per panicle and 1000-grain weight increased slightly and decreased as a whole.

关 键 词：水稻 旱直播 播种量 产量 

分 类 号：S511.042[农业科学—作物学]