摘要: … the problem of waterlogging. ► Rice crop should be replaced by ‘sorghum’ to overcome the problem of waterlogging. ► The lining of canal irrigation systems is recommended to …
John R. Krebs, Jeremy D. Wilson, Richard B. Bradbury, Gavin M. Siriwardena, The second Silent SpringNature. ,vol. 400, pp. 611- 612 ,(1999) , 10.1038/23127