摘要
The research project of "Effective Conditions & Application of Trace Fertilizer on the Loess Plateau", co-conducted by researchers from the CAS Institute of Soil and Water Conservation and from the provinces and autonomous regions concerned from 1977 to 1991,has made a research breakthrough.During the 15 years,the research team applied the new type of fertilizer to 4.488 million hectares in total acreage,leading to 1.5 million tons in grain yield rise and 748 million yuan in increased output value (at the pricing level of the time). In addition, the project results in the publication of some 60 research papers both at home and abroad,and four monographic works.It won a second
