上海市１９８６年开始试验种植直播稻，１９８９年组织推广，到１９９５年全市已达９万公顷，占单季晚稻总面积的５０％。直播稻之所以发展较快，除了具有省工、省力、省种、省本等优势之外，更为重要的是直播稻稳产、高产、高效益。１直播稻的生育特点１．１秧苗素质好。... Shanghai started experimentally planting direct seeding rice in 1986 and was organized and promoted in 1989. By 1995, the city had reached 90,000 hectares, accounting for 50% of the total area of ​​single-season late rice. The reason why the direct-seeding rice develops rapidly has the advantages of labor saving, labor saving, provincial species saving and provincial cost. It is even more important that direct seeding rice is stable, high yield and high efficiency. A direct broadcast of rice breeding characteristics 1.1 seedlings good quality. ...