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本组通过对上海郊区土壤中微量元素的测定,绘制了硼、锰、钼、锌、铁、铜、钴七个元素的有效含量分布图,并通过了鉴定。这为上海地区怎样使用好微肥提供了方便。另外,又针对上海郊区土壤微量元素的丰缺程度,确定重点推广施用硼、锌肥。硼肥主要用于十字花科的作物。据调查了解,我国缺硼土壤分布面很广,有十多个省,仅浙江省便有34个县缺硼。丽水地区施用硼肥后,油菜增产
Through the determination of trace elements in the soil of Shanghai suburbs, this group has mapped the effective content distribution of seven elements of boron, manganese, molybdenum, zinc, iron, copper and cobalt and passed the appraisal. This is how to use good fertilizer in Shanghai to provide a convenient. In addition, according to the degree of abundance and deficiency of soil trace elements in the suburbs of Shanghai, we determined to promote the use of boron and zinc fertilizer. Boron is mainly used for cruciferous crops. According to the survey, the distribution of boron-deficient soils in China is very broad with more than 10 provinces and only 34 counties in Zhejiang Province lack boron. After applying boron fertilizer in Lishui area, rapeseed yield