在毛主席革命路线指引下,在“农业学大寨”群众运动的推动下,社会主义农业生产不断发展。随着耕作制度的改革,以及复种指数的提高,对肥料的需求也越来越迫切。1973年,我们在早稻二代螟虫检查中,发现个别稻田中,零星生长着一种叫千里光的野生植物,经过访问贫下中农和实地观察,发现千里光耐荫、耐湿、耐温、耐酸、水生速生,有可能作为一种夏季绿肥,部分解决晚稻的肥料问题。1974年我们进行了试种观察和留种,1975年播种1.2亩,设5万苗、10万苗、15万苗、20万苗四种处理,小区面积为0.1亩,二个重复,6月22日播种,7月7日收割早稻,8月7日收草。经过47天的生长,收草时苗高44.8公 Under the guidance of Chairman Mao’s revolutionary line, driven by the mass movement of “Learning from Agriculture in Dazhai”, socialist agricultural production has developed continuously. With the reform of the farming system and the improvement of the multiple cropping index, the demand for fertilizers is also becoming more and more urgent. In 1973, during the check on the second generation of rice stem borers in early rice, we found that a few species of paddy fields were sporadic with the growth of a kind of wild plant called Senecio. After visiting the poor and middle peasants and field observations, we found that Senecio was resistant to shade, moisture, Aquatic fast-growing, it may be as a summer green manure, part of the late rice to solve the problem of fertilizer. In 1974, we conducted trial planting and seed stay. In 1975, we planted 1.2 mu of seedlings, 50000 seedlings, 100,000 seedlings, 150,000 seedlings and 200,000 seedlings. The plot area is 0.1 mu, two replicates and June Sowing on the 22nd, harvesting of early rice on July 7, harvesting on August 7th. After 47 days of growth, 44.8 cm tall when harvesting grass