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皖北砂姜黑土区的生物气候条件适宜玉米生长,发展玉米栽培是该地区土地利用的新趋势。为发展本区玉米生产,我们从1976年开始研究了砂姜黑土对玉米的供肥能力,首次提出玉米的锌—镁效应。此项研究突破传统观念,表明在淮北应当推广钙镁磷肥,现将初步研究结果报导如下,供继续探讨参考.用貌似肥沃但实际上肥力很低
The bioclimatic conditions in the lime-black area in northern Anhui are suitable for the growth of maize. Developing maize cultivation is a new trend of land use in this area. In order to develop the corn production in this area, we started from 1976 to study the supply of corn to the lime concretion black soil, the first proposed corn zinc-magnesium effect. This research breaks through the traditional concept and indicates that it is necessary to popularize the calcium magnesium phosphate fertilizer in Huaibei. The results of the preliminary research are reported as follows, for further reference. With seemingly fertile but actually low fertility