查种子的纯度先从春播种子中取出200粒,而后与纯种的主要性状进行比较,最后算出100粒种子的纯度。生产上用种的纯度,应控制在95%以上。查种子的杂质先取出一定重量的春播种子,而后挑拣出杂质,再称其重量,最后计算出种子净度的百分数。生产上用种的净度,一般应在97%以上。查种子 Check the purity of the seeds first removed from the spring seeding seeds 200, and then compared with the purebred traits, and finally calculate the purity of 100 seeds. The purity of seeds used in production should be controlled at above 95%. Check the seeds of impurities to take a certain weight of spring sowing seeds, and then pick out the impurities, then weigh its weight, and finally calculate the percentage of seed clarity. The net clarity of production, generally should be above 97%. Check the seeds