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在农作物的无机营养中,硼是一个必需的微量元素。土壤和农家肥料中常含有一定数量的硼。早些年份由于复种指数较低,农作物的肥料主要是施用农家肥,当时农作物施用硼肥较少。但随着耕作制度的变革,复种指数的不断提高,化学肥料施用水平大大增加,农家肥料却大大减少。从高山到平地,不仅氮、磷、钾有机质含量普遍减少,而且一些土壤中也表现缺硼。据石门县三十个土壤样品化验结果,土壤中有效硼一般只0.066—0.362ppm,平均
In crop inorganic nutrition, boron is an essential trace element. Soil and farm manure often contain a certain amount of boron. In earlier years, due to the lower multiple cropping index, the main fertilizer for crop was the application of manure, which was less applied to crops at that time. However, with the reform of the tillage system, the continuous improvement of the multiple cropping index, the application level of chemical fertilizers greatly increased, and farmer fertilizer was greatly reduced. From high mountains to the flat, not only nitrogen, phosphorus and potassium generally reduce the organic matter content, but also some of the lack of boron in the soil. According to Shimen County thirty soil samples test results, the soil is generally only effective boron 0.066-0.362ppm, the average