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1.高粱种子田和一般生产田不同,收获必须适当提前。宜在蜡熟期收获,即高粱穗的中部子粒开始变硬,穗下部子粒用指甲能掐出印并有少量浆,这个时期大体是高粱晒米阶段。据试验,高粱种子蜡熟期收获比完熟期收获可提高发芽率,若收获过晚会造成发芽率下降。如果种子田并未到蜡熟期,但霜期已近,都要在霜前3～5天收获。适时早收可提高发芽率、增加晾晒时间、降低种子含水量,有利于安全贮藏。高粱杂交制种田和不育系繁殖田,收获时要注意父母本不要混杂。 2.种子的晾晒。高粱种子田割倒后,捆成小捆,就地码成椽,码的方向是南北向,使其充分干燥,并及时扦头拉回脱粒、晾晒。选择晴朗天气,
1. Sorghum seed fields and general production of different fields, the harvest must be appropriate in advance. Should be harvested in the wax maturity, that grain sorghum mid-grain began to harden, spikelets below the ear with nails can pinch out the print and a small amount of pulp, this period is generally sorghum sun rice stage. According to the experiment, sorghum seeds harvested at the ripening stage of wax maturity can improve the germination rate, if the late harvest will result in decreased germination rate. If the seed field has not reached the wax maturity, but the frost period is near, must be frost 3 to 5 days before harvest. Early harvest can improve the germination rate, increase drying time, reduce seed moisture, is conducive to safe storage. Sorghum hybrid farming and sterile breeding field, harvest should pay attention to parents should not be mixed. 2 seeds drying. Sowing of sorghum seed fields, bundled into small bundles, local code into rafters, yards north-south direction is to make it fully dry, and timely pull back threshing tablets, drying. Choose sunny weather,