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调查分析了绵阳市郊区 (石马、龙门、塘汛 )蕃茄、黄瓜、菜豆 3种蔬菜的平衡施肥状况。结果发现其施肥养分比 (N∶P2 O5∶K2 O)分别为 1∶0 .6 2∶0 .6 0、1∶0 .53∶0 .57、1∶0 .52∶0 .6 0 ,与其吸肥特性相比 ,施氮相对较多 ,施钾明显偏低 ,氮钾比失调。因此 ,推荐施肥方案要求控制氮肥 ,保证磷肥 ,增加钾肥用量 ,使施肥的N∶P2 O5∶K2 O分别应达到 1∶0 .6 2∶1.10 (蕃茄 ) ,1∶0 .55∶1.2 0 (黄瓜 ) ,1∶0 .50∶1.15(菜豆 )。
The balanced fertilization condition of three kinds of vegetables including tomato, cucumber and kidney bean in suburbs of Mianyang City (Shima, Longmen, Tongxun) was investigated and analyzed. As a result, it was found that the ratio of fertilization to nutrient (N: P 2 O 5: K 2 O) was respectively 1: 0.6 2: 0.6, 1: 0.53: 0.57, 1: 0.52: Compared with its absorption characteristics, nitrogen application was relatively more, potassium application was obviously lower, and the ratio of nitrogen and potassium was imbalanced. Therefore, the recommended fertilization program requires the control of nitrogen fertilizers, the guarantee of phosphate fertilizers and the increase of potash fertilizers so that the fertilizing N: P2 O5: K2O should reach 1: 0.6 2:10:10 (tomato), 1: 0: 55: 1.2 0 Cucumber), 1: 0.50: 1.15 (kidney beans).