据调查统计表明,目前杂交早稻每亩用种量平均为2.4公斤,杂交晚稻为1.6公斤。假设杂交稻与常规稻种子播种品质相近,净度97％,发芽率95％,成秧率70％,种子效价(三数乘积)为64.5％。杂交稻一般每亩插5万基本苗,以一种双苗计算,每亩只需用种1.0～1.2公斤,而实际上每亩多用种1.4～0.4公斤。这个差距是由于杂交稻种子 According to the survey statistics show that the current hybrid early rice per mu with an average of 2.4 kg of hybrid rice is 1.6 kg. Assuming that the hybrid rice has the same sowing quality as the conventional rice, the clarity is 97%, the germination rate is 95%, the seedling rate is 70%, and the seed potency (the product of the three numbers) is 64.5%. Hybrid rice is generally inserted per acre 50000 basic seedlings, with a double seedling calculation, only need to plant 1.0-1.2 kg per acre, but in fact use 1.4 to 0.4 kg per acre. This gap is due to hybrid rice seeds