机械条播模式下播种密度对水稻抗倒能力、产量及品质的影响  

Effects of Sowing Densities on Lodging Resistance,Yields and Quality of Rice under Mechanical Strip Sowing Mode

作　　者：张彦 陈京都 辛海滨 唐建鹏 刘翠莲 范晓凯 ZHANG Yan;CHEN Jingdu;XIN Haibin;TANG Jianpeng;LIU Cuilian;FAN Xiaokai(Jiangdu Agriculture Technology and Integrated Service Center,Yangzhou,Jiangsu 225200,China;Yangzhou Agriculture Technology and Integrated Service Center,Yangzhou,Jiangsu 225009,China)

机构地区：[1]扬州市江都区农业技术综合服务中心,江苏扬州225200 [2]扬州市农业技术综合服务中心,江苏扬州225009

出　　处：《中国稻米》2025年第2期97-101,104,共6页China Rice

基　　金：江苏现代农业产业技术体系项目“江苏现代农业(稻麦)产业技术体系江都推广示范基地项目”(JATS[2023]249)。

摘　　要：为探明机械条播模式下播种密度对水稻抗倒性、产量及品质的影响,本研究以常规粳稻南粳9108和南粳5718为试验材料,每个品种设置5个播种密度,即90.0、112.5、135.0、157.5和180.0 kg/hm^(2),考察不同播种密度对水稻抗倒能力、稻米品质及产量形成等的影响。结果表明,随着播种密度的增加,茎蘖数和有效穗数增加,株高、穗长和抗折力降低,产量先增后降;随着播种密度的增加,糙米率、精米率和整精米率先增加后降低,蛋白质含量先减少后增加。南粳9108和南粳5718分别在播种密度为112.5 kg/hm^(2)和135.0 kg/hm^(2)时产量最高。南粳5718的产量和外观品质好于南粳9108,但加工品质和口感不及南粳9108。To investigate the effects of sowing density on lodging resistance,yield,yield formation and quality of rice under mechanical strip sowing mode,the experiment were conducted using conventional japonica rice varieties Nangeng 9108 and Nangeng 5718 as materials,with five sowing densities set for each variety,namely 90.0,112.5,135.0,157.5,and 180.0 kg/hm^(2).The results showed that with the increase of sowing density,the number of tillers and effective ears increased,while the plant height,ear length,and bending resistance decreased,the yield first increased and then decreased.With the increase of sowing density,the brown rice rate,polished rice rate,and whole polished rice rate first increased and then decreased,while the protein content first decreased and then increased.Nangeng 9108 and Nangeng 5718 achieved their highest yields at sowing densities of 112.5 kg/hm^(2) and 135.0 kg/hm^(2),respectively.The yield and appearance quality of Nangeng 5718 were better than those of Nangeng 9108,but the processing quality and taste were not as good as those of Nangeng 9108.

关 键 词：水稻 机械条播 播种密度 产量 抗倒能力 稻米品质 

分 类 号：S511.04[农业科学—作物学]