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1.用手抄。掌上或指缝间有固体颗粒如土粒砂粒等杂质;手背沾有细粉状物,证明种子净度达不到国家规定的标准(99%)。 2.用牙咬。谷粒有尖脆响声,含水量基本上达到13.5%;若无尖脆声或谷粒断面不齐,种子含水量一般高于13.5%。 3.识别杂交种子里的其它稻谷。①看柱头痕迹。非杂交种谷粒因多属自花授粉,雌蕊柱头不外露,柱头痕迹遗留在谷壳内部,剥开谷壳在米粒顶
Hand-copied Palm or finger between the solid particles such as soil particles sand and other impurities; hand back stained with fine powder, proved that the seed purity of less than the national standard (99%). Bite with a tooth Grain crisp sound, water content basically reached 13.5%; if no sharp crisp sound or grain section missing, the seed moisture content is generally higher than 13.5%. 3. Identify other paddy in hybrid seeds. ① look stigma traces. Non-hybrid grain is mostly due to self-pollination, pistil stigma is not exposed, stigma left in the chaff inside, peeled open chaff in the top of rice