Like any other Gramineous crop, hybrid rice keeps 80% of totally removed K in its shoots after ripening, only about 20% 同其它禾本科作物一样,成熟后杂交水稻保存总移出钾的80%在其茎杆中,只有20%吸收的钾转移到籽粒中,籽粒含钾量更为稳定,一般约为0.5%(表6)。