论文部分内容阅读
在研究植物的生长动态、光合作用、物质运转等一系列生理、生态问题中,常常需要快速而较准确地测知单片叶或群体叶的面积。常规的方法可用求积仪或重量换算等方法,但换算相当麻烦。尤其对象西瓜、番茄以及菊科的很多叶形很不规则的蔬菜作物的叶子,更需一种较好的方法,及时而准确地量取它们的叶面积。这里,我们介绍一种比较简便的方法,只需要一架较好的照度计和一个简易式放相机(以红色光作为光源)就可以组装一个速测叶面积的装置,而在不用时拆开并不影响它们各自的用途。一、原理:我们用一个简单的光路图来说明这个装置的原理(如图1)。
In the study of plant growth dynamics, photosynthesis, material operation and a series of physiological and ecological problems, often need to quickly and accurately measure the single leaf or group leaf area. Conventional methods such as using a cross-plot or weight conversion method, but the conversion is quite troublesome. Especially for many watermelon, tomato and asteraceae leaves many irregular leafy vegetables, but also need a better way, timely and accurate measure their leaf area. Here, we introduce a relatively simple method, only need a good light meter and a simple type of camera (with red light as the light source) can be assembled in a quick measuring leaf area device, and when not in use to open Does not affect their respective uses. First, the principle: We use a simple optical path to illustrate the principle of this device (Figure 1).