The contrastive experiments of organic inorganic compound fertilizer with NPK compound fertilizer was carried out by corn, rice, cowpea and Chinese cabbage.
在玉米、水稻、豇豆、小白菜四种作物上，进行有机无机复合肥与氮、磷、钾混合肥对比试验。
2
The highest sustainability of productivity was observed on the plots where equilibrium NPK chemical fertilizer and organic fertilizer were applied.
NPK化肥平衡施用以及NPK化肥与有机肥配合施用稻麦产量稳定，紫色土生产力的可持续性最强。
3
An experiment was carried out to study the effect of NPKfertilizer, micro-element fertilizer, organic fertilizer application on the yield and nutrient quality of Alfalfa Medicago sativa l.