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据调查,当前市郊菜区施肥存在的主要问题,一是肥料结构不合理,有机肥数量不足,质量下降;二是养分比例不平衡,据13个蔬菜公社统计,耕层土壤的速效氮、磷、钾为1∶0.28∶0.93,磷素不足,钾素亏缺;三是施肥方法上,追肥仍以表施为主,表土有板结现象,影响蔬菜根系伸展,耐湿和抗旱力减弱。其中急需解决的是调节养分比例和改革施肥技术。据此,今后蔬菜施肥研究,拟以稳产、高
According to the survey, the main problems existing in the fertilization of suburban vegetable areas at present are the irrational structure of fertilizers, the insufficient quantity of organic fertilizers and the deterioration of their quality. The other is the imbalance of nutrients. According to the statistics of 13 vegetable communes, available nitrogen and phosphorus , Potassium 1: 0.28: 0.93, phosphorus deficiency, potassium deficiency; 3 is the method of fertilization, top dressing is still based on top dressing, surface compaction phenomenon, affecting the root growth of vegetables, moisture and drought resistance weakened. Which urgently need to be addressed is to adjust the proportion of nutrients and fertilization technology reform. Accordingly, the future of vegetable fertilization research, intended to steady production and high