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伴随着我国“种子工程”的实施,各地农业行政主管部门着力狠抓了对玉米产量影响较大的种子纯度的提高,效果显著。以山东省为例,1995年对玉米杂交种抽样检验,平均纯度仅为91.3%,经过几年努力,2000年抽样鉴定平均纯度提高到96.7%。种子纯度对农作物的产量及其商品价值有着直接的影响,据报道,玉米杂交种纯度每提高1个百分点,1hm~2可增产玉米180kg。近几年来山东省玉米产量持续高产稳产,其中种子纯度的提高起到了重要的作用。从对部分种子经
Accompanying the implementation of “Seed Engineering” in our country, the agricultural administrative departments in various places have paid close attention to the improvement of the purity of the seeds that have a great influence on the corn yield, and the effect is remarkable. Taking Shandong Province as an example, in 1995, the average purity of maize hybrid samples was only 91.3%. After several years of hard work, the average purity of sampling identification in 2000 increased to 96.7%. Seed purity has a direct impact on crop yields and their commodity value. It has been reported that for every 1% increase in the purity of maize hybrids, 1 kg ~ 2 will produce 180 kg of corn. In recent years, the yield of maize in Shandong Province has been continuously high and stable, in which the improvement of seed purity has played an important role. From the part of the seed by