论文部分内容阅读
1覆膜制种的技术优势根据黑龙江省气候特点和几年来的工作实践,采用覆膜制种技术具有很强的技术优势。首先,能有效的利用和增加积温。通过覆膜不但可保持土壤温度而且可以吸收太阳辐射的温度,使土壤温度急剧升高,为种子萌发和后期生长发育奠定了基础,覆膜制种较直播制种可增加有效积温200～250℃,较直播制种提前收获10d以上。其次,能
Technical advantages of a film covered seed According to the climate characteristics of Heilongjiang Province and years of work practice, the use of film seed production technology has a strong technical superiority. First of all, can effectively use and increase accumulated temperature. By covering not only the temperature of the soil, but also the temperature of the solar radiation can be absorbed, the soil temperature rises sharply, which lays the foundation for seed germination and later growth and development. Film-covered seed can increase the effective accumulated temperature of 200 ~ 250 ℃ , Compared with direct seeding early harvest more than 10d. Second, can