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为了搞清常规水稻同一品种不同等级标准的种子对产量的影响,结推广普及良种提供依据,1986年,我们采用丰锦、秋光两个品种进行试验。每个品种分原种、一级种、二级种和等外种(农家自留种)4个等级。丰锦设两个试验点,随机区组排列,3次重复;秋光设3个点,大区对比。试验在一般生产条件下进行。结果是:一、纯度上的差异试验结果证明,同一品种不同等级标准种子,下一代田间纯度差异明显。随着等级标准的降低,田间纯度逐级降低。大屯试验点的结果是,原种纯度99.89％、一级种99.87％、二级种99.67％、等外种99.46％。其他试验点也有同样规律。
In 1986, we used two varieties, Fengjin and Qiuguang, to test the effect of seed of different grades and levels on the yield of conventional rice. Each species sub-species, a species, two species and other species (farmers retained species) 4 levels. Feng Jin set up two pilot points, random block arrangement, 3 times repeated; autumn light set 3 points, large area contrast. The test is carried out under normal production conditions. The results are: First, the purity difference The test results show that the same species of different grades of standard seeds, the next generation of field purity significantly. With the reduction of the grade standard, the field purity decreased step by step. The result of Datun test point is that the purity of original species is 99.89%, the first grade is 99.87%, the second grade is 99.67%, and the other species is 99.46%. Other test points have the same rules.