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众所周知,微量元素也是植物生长的必要元素。微量元素不足或过剩会引起作物生理机能失调,生长发育受阻,降低抗病性。目前,利用微量元素提高农产品的产量、品质已成为有力措施之一。如欧洲15个国家土壤普查后报导,有10个国家土壤含锌量低,施锌后效果十分显著。美、苏、德等国都已绘出土壤微量元素含量图。我国近年来也开展了土壤微量元素的普查工作。中国农科院土肥所已绘制出全国土壤微量元素分布图。随着科学的
It is well known that trace elements are also essential elements of plant growth. Insufficient or excessive trace elements can cause crop physiological dysfunction, growth and development blocked, reduce disease resistance. At present, the use of trace elements to improve the yield and quality of agricultural products has become one of the powerful measures. As reported in the soil survey of 15 European countries, there are 10 countries with low zinc content in soil and very significant effects after zinc application. The United States, the Soviet Union, Germany and other countries have drawn soil trace elements map. In recent years, China has also conducted a survey of soil trace elements. Soil and Fertilizer Institute of Chinese Academy of Sciences has drawn the national soil trace element distribution map. With science