The surface activity of the mixture, formed by sodium dodecylpoly oxyethylene sulfate (C12E7S) and dodecyltrihydroxyethylammonium chloride (C12NE), is much higher than that of the single one. The interaction between C...The surface activity of the mixture, formed by sodium dodecylpoly oxyethylene sulfate (C12E7S) and dodecyltrihydroxyethylammonium chloride (C12NE), is much higher than that of the single one. The interaction between C12E7S and C12NE is very strong. The aquepus solution of C12E7S-C12NE is homogeneous. The solubilization of 1-pentanol by the aquous solutipn of C12E7S-C12NE is decrease when the mixed ratio approach 1∶1 and the solubilized curve is "V" type, in which the lowest solubilization is only about one third of the single one’s. The solubilization curve of n-hexane shows the maximum when the mixed ratio approach 1∶1.展开更多
籽粒充实度差的问题是水稻亚种间杂种优势利用所面临的最后一道难关（袁隆平,1990）。对这一问题,近年来,人们进行了探讨,指出充实度不高可能与库源不协调、输导组织不畅、早衰及气候条件等有关,但这些大多都还是一些理论推测或初步观察...籽粒充实度差的问题是水稻亚种间杂种优势利用所面临的最后一道难关（袁隆平,1990）。对这一问题,近年来,人们进行了探讨,指出充实度不高可能与库源不协调、输导组织不畅、早衰及气候条件等有关,但这些大多都还是一些理论推测或初步观察,见诸报道的深入研究还很少。据前人的大量研究表明,气温对水稻籽粒充实有着显著的影响（汤志成等,1981;王人民等,1991;Shouichi Yoshida et al.1977）。为了探究水稻亚种间杂种一代籽粒充实度不高的生态原因,我们在人工气候箱内研究测定了不同气温条件下其籽粒充实的过程,期能为水稻亚种间杂种一代尽快利用于大田生产提供一些理论参考。展开更多
文摘The surface activity of the mixture, formed by sodium dodecylpoly oxyethylene sulfate (C12E7S) and dodecyltrihydroxyethylammonium chloride (C12NE), is much higher than that of the single one. The interaction between C12E7S and C12NE is very strong. The aquepus solution of C12E7S-C12NE is homogeneous. The solubilization of 1-pentanol by the aquous solutipn of C12E7S-C12NE is decrease when the mixed ratio approach 1∶1 and the solubilized curve is "V" type, in which the lowest solubilization is only about one third of the single one’s. The solubilization curve of n-hexane shows the maximum when the mixed ratio approach 1∶1.
文摘籽粒充实度差的问题是水稻亚种间杂种优势利用所面临的最后一道难关（袁隆平,1990）。对这一问题,近年来,人们进行了探讨,指出充实度不高可能与库源不协调、输导组织不畅、早衰及气候条件等有关,但这些大多都还是一些理论推测或初步观察,见诸报道的深入研究还很少。据前人的大量研究表明,气温对水稻籽粒充实有着显著的影响（汤志成等,1981;王人民等,1991;Shouichi Yoshida et al.1977）。为了探究水稻亚种间杂种一代籽粒充实度不高的生态原因,我们在人工气候箱内研究测定了不同气温条件下其籽粒充实的过程,期能为水稻亚种间杂种一代尽快利用于大田生产提供一些理论参考。
