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长期以来在红萍生产上存在一个薄弱环节,就是局限于用无性繁殖方法,使周年不断地都要在田间进行保种养殖。一九六五年我们开始对红萍的有性繁殖进行研究,但由于当时养殖利用的是本地萍,产孢率极低,使这项研究进展缓慢。一九七九年,我县引进细绿萍进行养殖利用。由于它起繁温度低、繁殖快、产量高、肥效大,很快受到广大群众的欢迎。但这一萍种不耐高温,利用营养体越夏保种比较困难。因此,我们于一九七九年初,利用细绿萍结孢率高,产孢量大的特性,进行大田孢子繁殖越夏的试验。分别用稻田自然倒萍后遗留田间孢子果就地育苗越夏和人工采孢贮藏越夏后播种育苗,均获得成功。其中:田间倒萍后孢子果就地育苗试验0.7亩,孢子萌发后,
For a long time, there has been a weak link in the production of red duckweed, which is limited to using asexual reproduction method, so that the anniversary keeps on maintaining breeding in the field. In 1965 we began to study the sexual reproduction of Rhododendron, however, due to the local use of native Rhizophora at that time, the rate of sporulation was very low, making the research progress slow. In 1979, the county introduced fine green Ping for breeding use. Because of its low temperature, rapid propagation, high yield, fertilizer efficiency, and soon welcomed by the general public. However, this species is not tolerant of high temperatures, the use of nutrients more difficult summer species. Therefore, in early 1979, we tested the breeding of summer spores in the field with the characteristics of high sporulation rate and spore yield. Successfully paddy field spores were naturally left after spores in the field nursery summer and artificial spores stored after the summer planting seedlings were successful. Among them: the field after pouring spore fruit nursery test 0.7 acres in situ, spore germination,