期刊论文

Effects of Different Seeding Rates on Grain Yield and Dry Matter Production of Direct-seeding Hybrid Rice

中文

杂交水稻

1005-3956

2017

32

3

66-69,78

10.16267/j.cnki.1005-3956.201703023

国家现代农业产业技术体系建设水稻栽培与土壤岗位科学家项目

本校为第一机构

为了探明直播杂交稻在不同播种量下的生长与产量表现,以杂交稻隆两优1212、隆两优华占、晶两优华占为材料,采用人工撒播栽培方式进行不同播种量(11.25,22.50,33.75 kg/hm~2)大田试验。结果表明,随着播种量的增加,3个品种的产量和成熟期干物重表现为增加趋势;不同播种量主要通过调节有效穗、每穗总粒数来影响产量。与中播种量处理相比,高播种量处理产量增加幅度较小,而用种量大幅增加,综合产量和种子成本,杂交稻直播栽培的播种量以22.5 kg/hm~2为宜。

In order to clarify the effects of different seeding rates on the growth and grain yield of direct-seeding hybrid rice, a field experiment with three hybrid rice Jingliangyou Huazhan） was conducted at Changsha in varieties （Longliangyou 1212, Longliangyou Huazhan and 2016. The seeding rate treatments were established as the low rate （ 11.25 kg/hm^2 ）, medium rate （22.50 kg/hm^2 ） and high rate （33.75 kg/hm^2 ） by artificial broadcasting. The results showed that the grain yield and the dry matter accumulation at maturity stage showed an ...