| 1. | Ploughing deeper and corn residues might promote formation of soil aggregated structure , decrease soil bulk density , relax solum , decrease soil porosity , raise soil permeability , improve soil structure and holding - water capability , create better soil biology condition for growth of crop , and coordinate water , fertilizer , air and heat etc . to prevent the fertility deterioration of the corn belt phaeozem and ameliorate soil , it is need to reform tillage and fertilizer application for the corn belt phaeozem in the central part of jilin
针对吉林玉米带黑土土壤退化现象，从黑土玉米的耕作制和施肥制的改革入手，并结合农村现有机械和技术水平，采用玉米“轻主重辅”三三耕作制和玉米“一稳二减三补”施肥技术，提出吉林玉米带黑土土壤调控技术体系。 |
