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1983年以来,吉林公主岭市大力推广了播后苗带重镇压技术(以下简称重镇压),目前推广范围已达22个乡镇,面积123万亩。为了验证该技术的作用与效果,我们在机耕地上搞了玉米播后重镇压(1YM-6型苗眼镇压器镇压)、V形镇压器镇压和木滚子镇压的对比试验。试验表明,合理的重镇压方法(即当播后垄顶干至1厘米左右时镇压),能使土壤形成一个苗带紧实、行间疏松,苗带表松、床紧、垄下喧的理想耕层构造。这种耕层构造不仅为种子发芽、生根、出苗创造了良好的土壤环境,而且对促进作物中、后期的生长发育也有明显的作用。
Since 1983, Gongzhuling City, Jilin Province, has vigorously promoted the technology of post-sowing seedling weight suppression (hereinafter referred to as repression). At present, the promotion scope has reached 22 townships and has an area of 1.23 million mu. In order to verify the effect and effect of this technology, we carried out a comparison experiment on post-sowing and post-sowing suppression of maize (1YM-6 seedling eye suppression), V-shaped suppression and wood roller repression. Experiments show that a reasonable method of heavy repression (that is, when the ridge is sown to 1 cm or so after the sowing is suppressed), the soil can form a seedling with compactness, loose lines, loose seedling with table, bed tightness, noisy ridge Ideal tillage structure. This plow structure not only provides a good soil environment for seed germination, rooting and emergence, but also has a significant role in promoting the growth and development of crops in the later period.