“有芒沙粳”是浙江省连作早稻的优良品种,自1955年推广以来,颇受群众欢迎。但是,每年各地繁殖和群众自留的种子,发芽势差、发芽率低。据1957年的调查,温州专区推广的“有芒沙粳”发芽率仅为70—80％,在秧田播种后的一个月时间尚有继续发芽的;加善县西塘乡原金钢农 “Mangsangjing” is an excellent variety of continuous cropping early rice in Zhejiang Province. Since its popularization in 1955, it has been well received by the masses. However, the seeds that are multiplied and retained by the people throughout the year have poor germination potential and low germination rate. According to a survey conducted in 1957, the rate of germination of “Mandanshajing” popularized in Wenzhou area was only 70-80%. One month after sowing in the seedling, sprouting still continued to occur.