菜芸豆种子淋雨后生命力的变化研究

为探索芸豆种子受到雨淋后活力的变化规律和将损失降到最低的措施,以自然风干种子为材料,人工模拟降雨条件,当经不同雨淋处理的种子含水量达到入库标准后,进行室内发芽势、发芽率检测,室外单粒点播、室外穴播试验,鉴定种子活力和田间出苗情况。试验结果表明,在收储晾晒过程中,种子遭受雨淋,其发芽势、发芽率均有降低,田间出苗数减少,发芽势下降尤为显著。种子淋雨后只要马上沥干水分并及时晾晒,不会造成田间的缺苗断垄,仍能达到国家二级种子质量标准,不会给种子加工企业和菜农带来损失。

Study on Vitality Change Rules of Kidney Bean Seeds in Rain Test

Taking the kidney bean seeds dried naturally and then exposed to the rain by artificial simulation as material, we studied the change rules of seed vitality and measures to minimize the loss. After being exposed to the rain, the seeds were spread out indoor and was dried by sun in outdoor after two or three days. Then we measured the seed germinability and seed emergence rate in indoor and investigated the seedling emergence rate in outdoor. The results showed that, being exposed to the artificial rain, the seed germinability and emergence rate were decreased, moreover the seedling emergence rate was reduced, with the seed germinability declined more significant. In general, it brought little loss to seed processing enterprises and farmers, as long as the seeds were dried immediately after being exposed to rain.