The current cultivation of apple trees mainly relies on grafted seedlings to achieve seedling regeneration of apple trees. The commonly used splice grafting,V-shaped grafting and tongue grafting mostly use plastic fil...The current cultivation of apple trees mainly relies on grafted seedlings to achieve seedling regeneration of apple trees. The commonly used splice grafting,V-shaped grafting and tongue grafting mostly use plastic film for fixation and sealing. After one year,the wrapped plastic film needs to be removed to avoid affecting the growth of the seedlings. This paper introduces a brand new grafting technology which uses tongue grafting iron nails for fixation and growth fixation wax for sealing( SDRG). The process of mechanized grafting for apple nursery stock is determined,and the fixation and sealing problems with the grafting parts of seedlings are solved. The technology is characterized by quick speed,high efficiency,improved seedling survival rate lower labor cost and great significance to the promotion of industrialized nursery and mechanized grafting.展开更多
Ball milling method was applied to prepare Lu^3＋/TiO2 photocatalysts. The catalysts were characterized with X-ray powder diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, UV-visible diffuse reflectance spe...Ball milling method was applied to prepare Lu^3＋/TiO2 photocatalysts. The catalysts were characterized with X-ray powder diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, UV-visible diffuse reflectance spectra（UV-vis DRS）, energy dispersive X-ray spectrometer（EDS）, transmission electron microscopy（TEM） and Brunauer-Emmett-Teller（BET） method. The photocatalytic activities were determined by the degradation of methylene blue（MB） equipped with a 300 W medium pressure mercury lamp. Results show that the first order reaction rate constants of Lu^3＋/TiO2 and pure TiO2 are0.0565 and 0.0263 min-1, respectively, which both were evaluated under the condition of catalysts loading of 0.2 g/L,initial concentration of 25 mg/L for MB, mole ratio of Lu^3＋/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu^3＋/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.展开更多
基金Supported by National Key Research and Development Program of China(2017YFD0701402-2)
文摘The current cultivation of apple trees mainly relies on grafted seedlings to achieve seedling regeneration of apple trees. The commonly used splice grafting,V-shaped grafting and tongue grafting mostly use plastic film for fixation and sealing. After one year,the wrapped plastic film needs to be removed to avoid affecting the growth of the seedlings. This paper introduces a brand new grafting technology which uses tongue grafting iron nails for fixation and growth fixation wax for sealing( SDRG). The process of mechanized grafting for apple nursery stock is determined,and the fixation and sealing problems with the grafting parts of seedlings are solved. The technology is characterized by quick speed,high efficiency,improved seedling survival rate lower labor cost and great significance to the promotion of industrialized nursery and mechanized grafting.
基金Project supported by the Natural Science Foundation of Hainan Province(20156242,217100,217101,20152033)Science and Technology Department of Hainan Province(ZDYF2017011)
文摘Ball milling method was applied to prepare Lu^3＋/TiO2 photocatalysts. The catalysts were characterized with X-ray powder diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, UV-visible diffuse reflectance spectra（UV-vis DRS）, energy dispersive X-ray spectrometer（EDS）, transmission electron microscopy（TEM） and Brunauer-Emmett-Teller（BET） method. The photocatalytic activities were determined by the degradation of methylene blue（MB） equipped with a 300 W medium pressure mercury lamp. Results show that the first order reaction rate constants of Lu^3＋/TiO2 and pure TiO2 are0.0565 and 0.0263 min-1, respectively, which both were evaluated under the condition of catalysts loading of 0.2 g/L,initial concentration of 25 mg/L for MB, mole ratio of Lu^3＋/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu^3＋/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.
