水稻播种前选种:目前一般采用比重选种,50升水加12千克工业食盐,使比重达到1.1至1.13。无比重计时,可用鲜鸡蛋试测,蛋壳露出水面5分硬币大小为宜。杂交稻种以清水进行选种,以便分级催芽。水稻种子播前消毒常用的方法:一、抗菌剂“强氯精”浸种:用10%“401”加水配成1000倍液,早 Rice sowing before the selection: the current general gravity selection, 50 liters of water plus 12 kg of industrial salt, so that the proportion of 1.1 to 1.13. Uncompetitive timing, available fresh eggs test eggshell 5 points out of the water the size of the coin is appropriate. Hybrid rice to water selection, in order to grade germination. Rice seed sowing before disinfection commonly used methods: First, the antibacterial agent “strong chlorine fine” soaking: with 10% “401” add water to 1000 times, as early as