WU Yu-hua.Effect of Different Density on Rice Growth and Yield after the Change from Dryland to Paddy in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2013,(07):16-19.
高纬寒地“旱改水”不同品种密度对水稻生育和产量的影响
- Title:
- Effect of Different Density on Rice Growth and Yield after the Change from Dryland to Paddy in Cold Region
- 文章编号:
- 1002-2767（2013）07-0016-04
- Keywords:
- high latitude and cold region; rice; density
- 分类号:
- S511.048
- 文献标志码:
- A
- 摘要:
- 为探讨高纬寒地不同水稻品种的适宜栽培密度，以早熟大穗型品种黑粳6号和极早熟9片叶品种黑粳5号为材料，研究了不同种植密度对水稻品种物候期、分蘖动态、叶面积、干物质积累和产量及其构成因素的影响。结果表明：黑粳6号最佳种植密度为28～34穴.m-2即（26.4 cm×13.2 cm或29.7 cm×10.0 cm）；黑粳5号的为38穴.m-2左右（26.4 cm×10.0 cm）。 不同品种的移栽密度变化对产量的影响很大，应该区别对待，以实现良种良法配套。
- Abstract:
- In order to explore suitable planting density of different rice varieties in high latitude and cold region,early-maturing and big spike type variety Heijing 6 and extremely early-maturing variety Heijing 5 were used as materials to discuss the optimum density of different varieties in cold region.The effects of different density on phenophase,tiller dynamic change,leaf area,dry matter accumulation,yield and yield components were studied.The result showed that the optimum density of Heijing 6 was 28～34 holes per square meter(26.4 cm×13.2 cm or 29.7 cm×10.0 cm).While,the optimum density of Heijing 5 was 38 hole per square meter(26.4 cm--×10.0 cm).The density of different varieties had a significant effect on the yield.To realize matching improved seed with fine cultivation measures,the density of various cultivars should be treated carefully.
参考文献/References:
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备注/Memo
收稿日期：2013-03-11
基金项目：黑龙江省农业科技创新工程种子创新基金资助项目（2010-02-07）；黑龙江省水利厅资助“水稻北扩”资助项目
作者简介：吴玉华（1974-），女，黑龙江省黑河市人，农艺师，从事农技推广工作。E-mail:smcxwyh@163.com。