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齐齐哈尔市位于黑龙江省西北部,是高寒、高纬度、无霜期短、热量不足的干旱地区,加之早霜的自然条件严重影响种子的产量和质量。齐齐哈尔市依安县大力推广玉米制种地膜覆盖技术,提高了玉米制种的产量和质量,取得了明显的经济效益,现将技术措施介绍如下。1 选择良种要根据生态条件,选用审定推广的优质、中早熟、高产、适应性强、生育期所需活动积温比当地当季度年活动积温少100℃左右的优良品种组合。如众单二、众单三等。
Located in the northwestern part of Heilongjiang Province, Qiqihar City is arid areas with high cold, high latitude, short frost-free period and lack of heat. In addition, the natural conditions of early frost seriously affect the yield and quality of seeds. According to the county of Qiqihar City, vigorously promote the maize seed film mulching technology to improve the yield and quality of maize seed, and achieved significant economic benefits, the technical measures are introduced below. 1 Selection of elite should be based on ecological conditions, the selection of validation of the promotion of high quality, early maturity, high yield, adaptability, the required activity during the growth period accumulated less than the regional quarter when the accumulated activity of less than 100 ℃ good variety combinations. Such as a single two, a single third and so on.