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在果树光合作用的研究中,田间测定与实验室不同。首先,在田间条件下,影响叶片光合作用的许多因子(如温度、光强、相对湿度、CO_2浓度等)变化多而频繁,因此,在保证测定准确的前提下,应尽量快速,以便真切反映实际光合状况,特别是当试验中处理较多时,为便于比较,快速尤其重要。其次,测定所用的仪器要小型化,便于携带和转移。目前国外已有许多适于田间光合测定的便携式仪器,如LI-6000与微机结合,可进行多指标
In the study of photosynthesis in fruit trees, field measurements are different from those in the laboratory. First of all, under field conditions, many factors affecting leaf photosynthesis (such as temperature, light intensity, relative humidity, CO 2 concentration, etc.) vary frequently and frequently, therefore, to ensure accurate determination of the premise, should be as fast as possible in order to truly reflect The actual photosynthetic condition, especially when handled more in the assay, is especially important for comparison purposes. Second, the instruments used for the assay should be miniaturized, easy to carry and transfer. At present, there are many portable instruments suitable for determination of photosynthesis in the field abroad, such as LI-6000 combined with microcomputer,