2026-10-15T03:49:48Z https://www.scidb.cn/oai

10.57760/sciencedb.IGA.0019z 2026-08-29T08:55:53Z

2026-08-29 XDA28070302 - Sub-project on Maize–Soybean Rotation Soil Ecological Function Enhancement – Local Standards doi:10.57760/sciencedb.iga.0019z en This dataset consists of two Heilongjiang provincial local standard text documents, which systematically cover the complete technical specifications for the reduction and elimination of soil obstacle layers and fertility improvement techniques in black soil region farmlands, as well as the partial substitution of chemical fertilizers with organic fertilizers and other nutrients under the maize–soybean rotation system. Mollisols region; soil ecological function enhan; local standards 周萌 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank