论文部分内容阅读
根是植物的六大器官之一。弄清根的功能掌握根系吸附面积和根系活力的测定方法,对于从事农业科研和农业生产工作,都将是很有意义的。根的功能根的功能是多方面的,但从植物生理的角度看,根的主要功能有以下两方面。 1、吸收功能。根有如动物的口器一样,植物靠它从土壤中吸收水分和矿物质。根对矿物质的吸收,不是一个简单的扩散过程,它可以有选择地大量累积某些离子,达到比外界同类离子大几百倍的程度。因而,根的吸收功能是一个复杂的生理过程。这个过程是通过交换吸附而进行的。根呼吸所产生的CO_2和H_2O化合成为碳酸,
The root is one of the six organs of a plant. To understand the function of the root Grasp the determination of root adsorption area and root activity, for agricultural research and agricultural production work, will be of great significance. The function of root function root is multifaceted, but from the plant physiology point of view, the main function of root has the following two aspects. 1, absorption function. The roots, like animal mouthparts, rely on plants to absorb moisture and minerals from the soil. Root absorption of minerals, not a simple diffusion process, it can selectively accumulate some of the large number of ions to reach more than a hundred times larger than similar ions. Thus, the absorption function of the root is a complex physiological process. This process is carried out by exchange adsorption. Roots of the respiratory CO_2 and H_2O synthesis of carbonated,