1978年春,我们对无土育秧进行了综合研究,其内容有:①育秧室的工厂化问题;②以上海Ⅰ型插秧机为对象,研究秧箱、秧盘、播种机的配套,同时改装了插秧机;③育秧技术,通过对温、光、肥、水等育秧条件的研究,全年培育了23期无土秧,其中绿肥茬早稻10期,三熟制麦茬早稻6期,单季稻3期,后季稻4期。供试品种有籼、粳、糯、早、中、晚共22个。根据品种特点,试 The spring of 1978, we conducted a comprehensive study of soilless seedlings, which are: ① plant seedling room problems; ② Shanghai Ⅰ type transplanter as the object, study seedling boxes, seedlings tray, seeder matching, and modified Transplanter; ③ seedling technology, temperature, light, fertilizer, water and other conditions of seedling nursery, cultivating 23 soilless seedlings, including 10 green rice stubble early rice, 3 early rice stubble 6, 3 single crop rice , After the fourth season rice. Test varieties are indica, japonica, waxy, early, middle and late a total of 22. According to the characteristics of varieties, try