我区除老园田外,大部分土壤比较脊薄,土壤无机态的氮素含量低,处于缺氮少磷而且比例失调的状况,严重影响作物的产量。我区于83—84年连续二年分别在小淀乡小淀大队、种子队、科技队做西红柿底施复合肥增产效果探讨,以期获得底施复合肥的最佳 In addition to the old park fields in our area, most of the soil is relatively sparse, with low levels of inorganic nitrogen in the soil, in the condition of lack of nitrogen and phosphorus and imbalance, which seriously affects crop yield. My area in 83-84 for two consecutive years in Xiaodian Township small group, seed team, science and technology team to do the bottom of the compound fertilizer application effect of tomato to explore the bottom compound fertilizer to achieve the best