种植密度对秦优7号农艺性状、产量及品质的影响

通过田间试验,研究了种植密度、不同的角果着生部位对秦优7号籽粒产量和品质的影响。结果表明:种植密度由22.5万株/hm2增加到30万株/hm^2,株高、分枝部位、分枝数、主花序长度、结果密度、主花序角果数、分枝角果数、主花序角粒数、分枝角粒数、主花序产量、分枝产量均有所降低,密度优势明显,主花序优势明显,产量增加23.07%。在相同密度下,秦优7号的亚油酸、亚麻酸、饱和脂肪酸、硫苷的变化,总是主花序高于分枝;按角果同一着生部位籽粒中油酸、亚麻酸、饱和脂肪酸、硫苷、含油量的变化,22.5万株/hm2密度处理的高于30万株/hm2,而蛋白质的变化则相反。因此,可以通过适当增加秦优7号的种植密度,凭...

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Published in江西农业学报 Vol. 26; no. 2; pp. 13 - 15
Main Author 曹永红 张智 李殿荣 任军荣 李敏 田建华 王京宏 王周礼 杨建利
Format Journal Article
LanguageChinese
Published 国家油料作物改良中心 陕西油菜分中心,陕西 大荔 715105 2014
陕西省杂交油菜研究中心,陕西 大荔 715105
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ISSN1001-8581

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Summary:通过田间试验,研究了种植密度、不同的角果着生部位对秦优7号籽粒产量和品质的影响。结果表明:种植密度由22.5万株/hm2增加到30万株/hm^2,株高、分枝部位、分枝数、主花序长度、结果密度、主花序角果数、分枝角果数、主花序角粒数、分枝角粒数、主花序产量、分枝产量均有所降低,密度优势明显,主花序优势明显,产量增加23.07%。在相同密度下,秦优7号的亚油酸、亚麻酸、饱和脂肪酸、硫苷的变化,总是主花序高于分枝;按角果同一着生部位籽粒中油酸、亚麻酸、饱和脂肪酸、硫苷、含油量的变化,22.5万株/hm2密度处理的高于30万株/hm2,而蛋白质的变化则相反。因此,可以通过适当增加秦优7号的种植密度,凭借高密度优势、角粒数优势、千粒重优势,主花序的增产优势,协调好个体与群体的关系,可充分发挥秦优7号的增产优势、获得高产,增加产油量。此外,适当增加密度还可以有效降低株高,减少单株有效角果数,有利于机械收割操作和减少损失。
Bibliography:36-1124/S
Rapeseed;Planting density;Main raceme;Yield;Quality
CAO Yong-hong, ZHANG Zhi, LI Dian-rong, REN Jun-rong, LI Min, TIAN Jian-hua, WANG Jing-hong, WANG Zhou-li, YANG Jian-li (1. Hybrid Rapeseed Research Center of Shaanxi Province, Dali 715105, China; 2. Shaanxi Rapeseed Branch of National Oil Crops Genetic Improvement Center, Dali 715105, China)
A field experiment was conducted to investigate the effects of planting density and pod position on the agronomic traits, seed yield and quality of rapeseed variety Qinyou No .7.The results showed that: as the planting density increased from 225000 plants/hm^2 to 300000 plants/hm^2, the plant height, branch site, branch number, length of the main raceme, pod density, pod number on the main raceme , pod number on the branch , seed number per pod on the main raceme , seed number per pod on the branch , seed yield on the main raceme , and seed yield on the branch all decreased;the density superiority and main raceme superi-ority were obvious;the seed yield increased
ISSN:1001-8581