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精选小麦种子是提高种子质量和促进小麦增产的有效措施。实践证明,精选小麦种子的社会效益是非常好的。首先是提高了干粒重和发芽率。据试验,一般千粒重增加3～5克,发芽率提高5～10％。其次是节省大田用种量。精选过的种子籽粒饱满,出苗率高,每亩播量由原来的15公斤减少到10～12.5公斤。如果我省麦田都用精选过的种子,一年就可节省5000万多公斤种子。第三是节省种子用粮。种子经过精选要剔除一部分小粒、秕粒、破粒和沙石等,剔除出的这部
The selection of wheat seeds is an effective measure to improve seed quality and increase wheat yield. Practice has proved that the social benefits of selected wheat seeds are very good. The first is to increase dry weight and germination rate. According to the test, the average grain weight increased 3 to 5 grams, the germination rate increased by 5 to 10%. The second is to save the field with species. Selected seed full of seeds, the emergence rate is high, the amount of sowing per acre from the original 15 kg reduced to 10 ~ 12.5 kg. If our province wheat fields are selected with the seeds, a year can save more than 50 million kilograms of seeds. The third is to save seeds with food. After the selection of seeds to remove some of the small particles, tablets, tablets and gravel, etc., removed from this