密度对双低油菜苏油7号产量与品质的影响
Effects of Density on Seed Yield and Quality of Double-low Rape Suyou 7
张建栋 1黄萌 1孙华 1陈培峰 2宋英1
作者信息
- 1. 江苏太湖地区农业科学研究所,江苏苏州215155;国家油菜产业技术体系苏州综合试验站,江苏苏州215155
- 2. 江苏太湖地区农业科学研究所,江苏苏州215155
- 折叠
摘要
[目的]研究不同密度对苏油7号产量和主要品质的影响.[方法]通过田间试验,研究密度对苏油7号产量、产量构成因素、有效角果数、有效分枝数、品质性状的影响.[结果]随着密度的增加,产量有先增后减的趋势,密度间产量差异达极显著水平.低密度水平能显著增加单株有效角果数,随着密度降低单株有效角果数减少,单位面积角果数有先增后减的趋势;不同密度对每角粒数和千粒重影响不大.因此,高产主要取决于单位面积有效角果数.随着密度的增加,主轴和一次分枝有效角果数有所减少,二次分枝有效角果数和单株二次有效分枝数则显著减少.籽粒含油率和蛋白质含量随着密度增加而有所降低.[结论]在该试验条件下,为获得较高产量和保证双低品质,苏油7号适宜密度为13.5万株/hm2.
Abstract
[Objective] To research the effects of density on seed yield and quality of double-low rape Suyou No. 7. [Method] Through field test, we researched the effects of density on the yield, yield component factor, effective pod number, effective branch number and quality character. [ Result] With the increase of density, yield showed a tendency of first increase and the decrease, yields of rape under different planting densities had extremely signficant differences. Low density significantly enhanced the effective pod number per plant. With the de-crease of density, effective pod number per plant reduced, pod number per unit area firstly enhanced and then reduced. However, density had little impacts on seed number per pod and 1000-grain weight. Therefore, high yield was mainly deternimed by effective pod number per unit area. With the increase of density, principal axis and effective pod number of primary branch reduced, effective pod number of secondary branch and effective branching number per plant significantly reduced. Seed oil content and protein cotnent reduced with the increase of densi-ty. [ Conlcusion] Under the test condition, the proper planting density of Suyou 7 was 135000 plants/hm2 in order to obtain relaitvely high yield and to ensure the qualtiyof double low.
关键词
油菜/密度/苏油7号/产量/品质Key words
Rape/Density/Suyou 7/Yield/Quality引用本文复制引用
基金项目
农业部油菜产业技术体系项目(CARS-13)
苏州市科技局农业科技创新工程(SNG201507)
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据