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(一)采集我们内蒙西部地区过去很少有人找到过水螅。1953年初冬我们在呼和浩特红山口水神庙旁采集水草,这里有一个不大的泉水池。因为四面环山,泉水向阳,冰结得不很厚,冰下水草依然碧绿。打开浮冰用手帕包了几株水草准备做水生植物光合作用的实验,不料次日在泡水草的瓶壁上发现一个水螅。经我们初步考虑的结论是这样的:(1)水必须比较干净而含盐硷很少;(2)没有水草的水中不易找到;(3)水流必须很慢;(4)最重要的是下面有泉眼多天不完全封冻的池中才可能有水螅。这一点我们认为是有地区性的意义的。在内蒙和西北较寒冷的地区浅水池(?)往
(A) Acquisition We Western Inner Mongolia in the past few people have found Shuizhi. In the early winter of 1953, we collected water plants near the temple of Hongshan saliva in Hohhot, where there was a small spring pool. Because surrounded by mountains, spring water, ice is not very thick, ice is still green aquatic plants. Open the ice pack with a handkerchief several plants ready to do aquatic photosynthesis experiments, only to find the next day in the bottle wall of water bubbles found in a water 螅. Our initial consideration is this: (1) the water must be relatively clean with little salt; (2) the water is not easy to find in aquatic plants; (3) the water flow must be slow; (4) the most important is below There are springs in the pool may not have frozen water for many days. This is what we think is of regional significance. Shallow pools (?) Toward colder areas in Inner Mongolia and northwest