期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
油菜“宽垄间距-垄作垄收”机械化生产试验研究
1
作者 李英 陈雪飞 +10 位作者 赵立军 彭维钦 万玉华 李强 许颖 黎斌 唐立超 舒黎辉 王明明 罗春明 李尚 《农机化研究》 北大核心 2024年第8期186-190,共5页
为研究“普通平作”模式与“宽垄间距-垄作垄收”模式对油菜主要农艺性状及产量性状的影响,为探究油菜机械化生产的最佳种植模式提供技术参考,以重庆市农业科学院水稻研究所提供的庆油3号为材料,测定“普通平作”与“宽垄间距-垄作垄收... 为研究“普通平作”模式与“宽垄间距-垄作垄收”模式对油菜主要农艺性状及产量性状的影响,为探究油菜机械化生产的最佳种植模式提供技术参考,以重庆市农业科学院水稻研究所提供的庆油3号为材料,测定“普通平作”与“宽垄间距-垄作垄收”两种种植模式下油菜机械化生产的主要农艺性状及产量性状,并比较两种种植模式的经济效益。结果表明:“普通平作”模式虽然单位面积有效株数多于“宽垄间距-垄作垄收”模式,但“宽垄间距-垄作垄收”模式种植的油菜产量性状更优,损失量和损失率更低,经济效益更高,更适合机械化收获。两种种植模式的主要农艺性状差别不大,但单位面积产量与经济效益存在明显差异,选择适宜的农机农艺融合模式进行机械化生产可获得高产高效。 展开更多
关键词 油菜 宽垄间距-垄作垄收 种植模式 机械化生产
下载PDF
Genetic Analysis of Segregation Distortion of Molecular Markers in Maize RIL Population
2
作者 Zhongjun FU Shujun LI +2 位作者 Hua YANG Xin DONG Zhiyun QI 《Agricultural Science & Technology》 CAS 2017年第10期1816-1819,共4页
A RIL population was used in this study, which was derived from a cross between a temperate maize germplasm inbred line B31-1 and a tropical maize germplasm inbred lines Huangzao 4. A genetic linkage map was construct... A RIL population was used in this study, which was derived from a cross between a temperate maize germplasm inbred line B31-1 and a tropical maize germplasm inbred lines Huangzao 4. A genetic linkage map was constructed comprising of 153 polymorphic markers. Among the 153 polymorphic markers, 82 markers showed the significantly segregation distortion(P〈0.05), favoring either the marker alleles of female parent 1331-1(62.50%) or male parent Huangzao 4(37.50%). Segregation distortion marker distribution along the present molecular maps of maize was far from uniform, with clusters of tightly linked loci and single marker. Nine segregation distortion regions were detected on 10 chromosomes, indicating that possible causes for segregation deviation of molecular markers are genetic selection. 展开更多
关键词 MAIZE Segregation distortion Molecular markers RIL
下载PDF
Principles of Surface Potential Estimation in Mixed Electrolyte Solutions:Taking into Account Dielectric Saturation
3
作者 Wen-xin Zou Jing Peng +1 位作者 Wei-ning Xiu Xin-min Liu 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2020年第3期334-342,I0002,I0003,共11页
The dielectric properties between in-particle/water interface and bulk solution are significantly different,which are ignored in the theories of surface potential estimation.The analytical expressions of surface poten... The dielectric properties between in-particle/water interface and bulk solution are significantly different,which are ignored in the theories of surface potential estimation.The analytical expressions of surface potential considering the dielectric saturation were derived in mixed electrolytes based on the nonlinear Poisson-Boltzmann equation.The surface potentials calculated from the approximate analytical and exact numerical solutions agreed with each other for a wide range of surface charge densities and ion concentrations.The effects of dielectric saturation became important for surface charge densities larger than 0.30 C/m^2.The analytical models of surface potential in different mixed electrolytes were valid based on original Poisson-Boltzmann equation for surface charge densities smaller than 0.30 C/m^2.The analytical model of surface potential considering the dielectric saturation for low surface charge density can return to the result of classical Poisson-Boltzmann theory.The obtained surface potential in this study can correctly predict the adsorption selectivity between monovalent and bivalent counterions. 展开更多
关键词 Dielectric property Electrical double layer Surface charge Colloid particle
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部