The research results in last 10 years showed that the contents of the macro-elements in autumn shoots of Litchi decreased in the order of N, K and P, which was not related to environment and variety, but notably to se...The research results in last 10 years showed that the contents of the macro-elements in autumn shoots of Litchi decreased in the order of N, K and P, which was not related to environment and variety, but notably to season. The contents of P and K in leaves of autumn shoots decreased rapidly, but the content of N did not change at the flowering and fruit bearing stages. The autumn shoots developed into fruit branches, and Litchi yield was significantly correlated to contentsof N, P and K in leaves of autumn shoots; Litchi yield was significantly correlated to the content of N and P at the flowing stage, it was significantly correlated to the content of K at the maturity stage. Rreasonable ratio among N, P and K was one of important measures to achieve high and stable yield in Litchi.展开更多
在计算机网络技术课程教学中,在局域网计算机之间联网时,需要在域控制器和客户机之间频繁切换。为了方便教师进行组网技术的讲解和满足常规教学需要,学校多媒体教室管理员通常的做法是在多媒体教室中的计算机上安装Windows Server 2003...在计算机网络技术课程教学中,在局域网计算机之间联网时,需要在域控制器和客户机之间频繁切换。为了方便教师进行组网技术的讲解和满足常规教学需要,学校多媒体教室管理员通常的做法是在多媒体教室中的计算机上安装Windows Server 2003服务器和Windows XP双操作系统,以便各取所需。但这样做仍然存在诸多问题。文章介绍了一种用虚拟机技术解决这些问题的方法,该方法简单、容易实现,且具有经济、实用、灵活和易于扩展的特点,值得推广。展开更多
文摘The research results in last 10 years showed that the contents of the macro-elements in autumn shoots of Litchi decreased in the order of N, K and P, which was not related to environment and variety, but notably to season. The contents of P and K in leaves of autumn shoots decreased rapidly, but the content of N did not change at the flowering and fruit bearing stages. The autumn shoots developed into fruit branches, and Litchi yield was significantly correlated to contentsof N, P and K in leaves of autumn shoots; Litchi yield was significantly correlated to the content of N and P at the flowing stage, it was significantly correlated to the content of K at the maturity stage. Rreasonable ratio among N, P and K was one of important measures to achieve high and stable yield in Litchi.
文摘在计算机网络技术课程教学中,在局域网计算机之间联网时,需要在域控制器和客户机之间频繁切换。为了方便教师进行组网技术的讲解和满足常规教学需要,学校多媒体教室管理员通常的做法是在多媒体教室中的计算机上安装Windows Server 2003服务器和Windows XP双操作系统,以便各取所需。但这样做仍然存在诸多问题。文章介绍了一种用虚拟机技术解决这些问题的方法,该方法简单、容易实现,且具有经济、实用、灵活和易于扩展的特点,值得推广。
