海量資源,盡在掌握
 黑黏土水灌地,有機質(zhì)1.51%,全氮0.1002%,堿解氮64.7毫克/千克,速效磷16.45毫克/千克。坡地,有機質(zhì)1.1161%,全氮0.0628%,堿解氮9.18毫克/千克,全磷0.035%,速效磷11.6985毫克/千克。黃綿土質(zhì)山坡,有機質(zhì)0.89%,全氮0.065%,全磷0.027%,水解氮51.6毫克/千克 (本文共 174 字 ) [閱讀本文] >>