期刊论文

Zou, Y.-B.

中文

作物学报

0496-3490

2016

42

8

1176-1187

10.3724/SP.J.1006.2016.01176

国家现代农业产业技术体系建设专项子课题水稻栽培与土壤岗位科学家项目(2011-2015)

本校为第一且通讯机构

为了缓解长江中下游双季稻区机插双季稻生育期不配套的矛盾, 2014-2015年早晚两季均以常规早稻品种中嘉早17为材料,在大田栽培条件下研究机插密度(36.4、28.6、19.0穴m~(-2))与施氮量(0、110~140、176~189 kg N hm~(-2))对机插双季稻产量及氮肥利用率的影响。结果表明:采用"早晚兼用"机插双季稻栽培模式有利于早、晚2季周年高产,以"高密+高氮"处理产量最高, 2年分别达到16.94 t hm~(-2)和16.99 t hm~(-2),但与"高密+低氮"处理的产量差异不显著;氮肥利用率随氮肥用量增加而下降,随栽插密度增加而提高,以"高密+低氮"处理最高, 2年4季分别为62.77%、 55.75%、65.82%、64.37%,比"高密+高氮"处理分别...

In order to alleviate the contradictions of growth period mating problem of machine-transplanted double cropping rice in Changjiang Rive regions, a field experiment with three nitrogen rates (0, 110-140, and 176-189 kg N ha-1) and three plant densities (36.4, 28.6, and 19.0 hill m-2) was conducted using conventional early variety "Zhongjiazao 17" in both early and late seasons to explore the effects of machine transplanting densities and N application on yield and N recovery efficiency (REN) in 2014-2015. Adopting the same conventional early variety was able to reach the high yield in machine-...