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我县位于淮北东部地区,多为黄粘土,岗岭区为包火石黄土。这种土壤大部分石灰反应强烈,碳酸钙含量7～10％,pH值8～8.5,速效钾含量丰富,加之无机氮磷肥的施用数量不断增加,这些因素都影响硼、锌等微量元素的有效性,或诱发出缺素症。据分析,我县土壤有效硼平均含量为0.49ppm,虽略高于全省的平均含量0.41ppm,但远低于其缺硼临界值0.80ppm。大豆缺硼反应敏感,需硼量较大。1983～1985年我们开展了夏大豆施硼试验研究工作,以探讨大豆施硼的增产效果与施用技术。 一、夏大豆施硼的增产效果 为了确定夏大豆施硼的增产效果,设置了硼砂拌种、根外喷硼和不同硼肥施用方法
My county is located in the eastern part of Huaibei, mostly yellow clay, Gangling area for the package flint loess. Most of this soil has strong lime reaction, calcium carbonate content of 7 ~ 10%, pH value of 8 ~ 8.5, available potassium content is rich, combined with the increasing use of inorganic nitrogen and phosphorus fertilizer, these factors affect the effective boron, zinc and other trace elements Sex, or induced deficiency syndrome. According to the analysis, the average content of soil available boron in our county is 0.49ppm, slightly higher than the average content of 0.41ppm in the province, but far below its critical value of 0.80ppm of boron deficiency. Soybean boron-sensitive response, requiring a larger amount of boron. From 1983 to 1985, we carried out summer soybean boron application research to explore the effect of soybean boron application and application techniques. First, the yield-increasing effect of summer soybean application of boron In order to determine the yield-increasing effect of summer soybean application of boron, set borax seed dressing, boron spraying and different boron fertilizer application method