种植蔬菜的土壤长期施用高浓度复合肥的情况调查

通过蔬菜施肥情况调查、土壤养分的化验、土壤障碍因子的成因分析,得出大量施用高浓度复合肥是造成蔬菜土壤磷钾富营养化、酸化、次生盐渍化等现象的主要原因之一,并提出实施测土配方施肥,推广施用蔬菜专用肥、水旱轮作、灌水洗盐等改良措施。

Investigation on status of vegetables-growing soil for long-term application of high-analysis compound fertilizer

An investigation on vegetable fertilization, test of nutrient in soil and analysis on reason of formation of the soil obstacle factor have been done. For the phenomena of phosphorus and potassium nutrient enrichment in the soil for growing vegetable, soil acidification and secondary salinization, one of the principal causes is the application of highconcentration compound fertilizer. Some improvement measures, such as balance fertilization, special vegetable fertilizer, waterdry rotating culture and washing salt by irrigation are proposed.