按照现在初一植物教学进度的安排,讲到茎的输送作用时,大约总是在秋末冬初,一般地区的一般树木都已经到了落叶的季节,因而不容易找到适当的树枝,来做好水分和无机盐的输送的实验。我们这学期做这个实验时,是采用了多青树的嫩枝(这种树多季是不落叶的),插在红色水液里,在阳光下放置了5—6小时,连叶脉里也有了红色。效 According to the arrangement of the first plant teaching progress now, it is not always easy to find suitable branches for the water to be harvested when the transfer of stems is about always in late autumn and early winter, and the general trees in general areas have reached the deciduous season And inorganic salt delivery experiments. When we did this experiment in this semester, we used the twig of the evergreen tree (this tree does not deciduous for many seasons), and stuck it in red water for 5-6 hours under the sun, Red effect