Effect of mineral N fertilizer reduction and organic fertilizer substitution on soil biological properties and aggregate characteristics in drip-irrigated cotton field
A four-year field study was conducted to determine how soil biological properties and soil aggregate stability changed when organic fertilizer and biofertilizer were used to reduce chemical fertilizer application to a drip-irrigated cotton field. The study consisted of six fertilization treatments:unfertilized( CK); chemical fertilizer( CF,300 kg N·hm-2; 90 kg P2O5· hm-2,60 kg K2O·hm-2); 80% CF plus 3000 kg · hm-2organic fertilizer( 80% CF + OF); 60% CF plus 6000kg·hm-2organic fertilizer( 60% CF + OF); 80% ...