期刊论文

Effects of Low-nitrogen Close-planting Cultivation on Yield and Nitrogen Use Efficiency of Machine-planted Late Rice

中文

西北农业学报

1004-1389

2019

28

5

729-734

10.7606/j.issn.1004-1389.2019.05.007

国家重点研发计划（2017YFD0301503）~~；

本校为第一机构

研究低氮密植栽培对机插晚稻干物质累积与氮素利用效率的影响,为水稻高产高效栽培提供依据,以杂交稻‘泰优390’与常规稻‘湘晚籼13’为材料,在大田栽培条件下,研究机插密度(36.4穴/m~2、28.6穴/m~2)与施氮肥量(0、120、150kg/hm~2)对机插晚稻产量及氮素利用率的影响。结果表明:与常规栽培(28.6穴/m~2,150kg/hm~2)相比,低氮密植(36.4穴/m~2,120kg/hm~2)条件下,晚稻的干物质累积量与氮素累积量显著提升,‘泰优390’与‘湘晚籼13’的收获期干物质累积量分别提高22.8%和15.3%,氮素累积量分别提高10. 6%和16.2%;产量构成因素中,穗粒数、结实率、千粒质量在2种栽培条件下无显著差异,但有效穗数、偏生...

In order to study the effects of low-nitrogen and close-planting cultivation on the dry matter accumulation,nitrogen utilization efficiency of late rice and to provide basis for high yield and efficient cultivation of rice,hybrid rice cultivar‘Taiyou 390’and conventional cultivar‘Xiangwanxian 13’were used to study the effects of planting density(36.4holes/m~2,28.6holes/m~2)and nitrogen application rate(0,120kg/hm~2,150kg/hm~2)on the yield and nitrogen use efficiency of machine-planted rice in the field.The results showed that compared with ...