Microorganisms dewlling ina rice field as a teaching material for life science Education

1.调查了稻田微生殖器的种类。在稻田中发现了多种微生物，无论其定位如何。它们的生物群在不同的稻田中没有太大差异。这部分是因为稻田的环境控制得很好，种植水稻的环境很相似。我们还从土壤中获得了许多种小型环节动物和节肢动物，即使在旱季也是如此。我们可以得出结论，稻田为生命科学教育提供了许多教材，并在环境教育中发挥了重要作用。为了培养植物微生物，利用园艺物品(土壤、粪便等)开发了一种简单的方法。以稻田为材料，研究了草菇的最适培养条件。此外，该方法也适用于蓝藻、绿藻、新月浑藻等。对于纤毛虫的培养，从便利店购买的矿泉水和营养物质S等商品被发现对配制纤毛虫的培养基很有用。其中一些微生物适合作为中学生命科学教育和环境教育的活教材。其中一种是纤毛虫Dileptus sp.这对于了解稻田生态系统具有很好的特点。

1. Species of microorgamisms were investigated in rice fields. Many kinds of microorganisms were found in rice fields regardless its localization. Their biota was not much different among rice fields. This is partly because the environment of rice fields is controlled well to cultivate rice plant and resembles each other. We obtained also many kinds of small Annelida and Arthropoda from the soil even during drying seasons. We may conclude that rice fields offer many teaching materials for lefe science education and play an important role for environmental education.2. For cutivating phyto-microorganisms, a simple method was developed by usage of gardeming goods (soil, manure, etc.). The optimal condition for cutivating Volvox collected from a rice field was studied. Moreover, the method was applicable to others, such as Blue green algae, green algae Closterium and so on. For cultivating ciliates, some goods such as mineral water and nutrient s purchasable from eonvenience stores were found to be useful to prepare their culture medium.3. Some of the microorganisms have suitable characters as a live teaching material for life science education and environmental education in the secondary school. One of them is a ciliate Dileptus sp. which has some good characteristics for understanding ecosystem in a rice field.