氮素对转基因抗虫棉上部果枝“铃—叶系统”生长生理特性的影响

被引量 : 4次 | 上传用户:habi_jia
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
本试验以大面积推广的转基因抗虫棉鲁棉研28号为试验材料,在田间条件下设置了4个不同氮素水平(对照0kg·hm-2、低氮120kg·hm-2、中氮240kg·hm-2、高氮480kg·hm-2),研究了上部果枝形态、内外围果枝叶及棉子的生理生化特征、干物质积累分配特征。结果表明:1不同氮素水平对棉花上部果枝形态和生长的影响。施氮处理显著提高棉花上部四个果枝的长度、叶面积,降低果枝近远端直径比。施氮处理明显促进上部果枝和叶片的生长,延长叶片功能期,其中以中氮处理效果最显著。说明氮不足降低
其他文献
大豆是我国重要的经济作物和养地作物,南方大豆在其生长期降雨比较集中,容易遭受涝害。因此,采取相应的措施缓解大豆涝害、提高灾后大豆恢复能力具有重要意义。本研究以大豆品种南农99-6(Glycine max var. Nannong99-6)为研究材料,二乙基二硫代氨基甲酸钠(DDTC)为缓解试剂,通过盆栽试验,研究了苗期不同淹水天数后叶面喷施DDTC对大豆生长和生理特性的影响;并以不同耐涝基因型大豆
A scheme is presented for teleporting an unknown state in a trapped ion system.The scheme only requires a single laser beam.It allows the trap to be in any stat
In this paper,we propose a physical scheme to realize quantum SWAP gate by using a large-detuned single-mode cavity field and two identical Rydberg atoms.It is
1991年,我市棉花生产遭受了历史上罕见的洪涝灾害,在市委、市政府的领导下,全市干部和棉农奋力抗洪救灾,超常规地加强对灾后棉花的管理,大灾之年,仍夺得了棉花生产的较好收
This paper proposes a scheme to teleport an arbitrary multi-particle two-level atomic state between two parties or an arbitrary zero- and one-photon entangled s
An Ising-type atom-atom interaction is obtained in a fibre-connected three-atom system. The interaction is effective when △≈γO>>g.The preparations of remote tw
Density functional theory (DFT) (B3P86) of Ganssian 03 has been used to optimize the structure of the Cr2 molecule, a transition metal element molecule. The res
In this paper we report a kind of fast-scale instability occurring in the single-ended primary inductance converter (SEPIC) power factor pre-regulator, which is