山西中部菜田土壤养分调查分析

在山西省中部菜田土壤调查取样分析结果表明，土壤普遍存在碱解氮和速效磷的累积，速效钾、速效硼有减少的趋势，老菜田表现较为明显。祁县地区有机质、碱解氮含量偏低。依据土壤养分含量的丰缺状况：阳泉市、榆次、清徐、太原小店区菜田土壤碱解氮达到高含量水平的占30%以上，达到中含量水平的占50%，祁县地区碱解氮有73%的为极低含量水平。阳泉市、榆次土壤速效磷达到高含量水平的占80%以上。山西省中部菜田施肥技术应该控制氮、磷、增施钾肥和补施硼肥，大量施用秸杆类有机肥。

The Analysis of the Soil Nutrition Investigation of the Vegetable Fields in the Middle of Shanxi

The investigation and the sampling analysis of the vegetable fields soil in the middle of Shanxi shows that, generally there exists the accumulation of the available N and the available P and the available K and the available B tend to reduce. It shows more evidently in the old vegetable fields. The content of the organic matter and the available N is on the low side in Qi county. According to the abundance and the lack conditions of the soil nutrient content: In Yangquan, Yuci, Qingxu, and Xiaodian of Taiyuan there are more than 30% of the vegetable fields soil in which the content of the available N reaches the high level, and 50% in which the content of the available N reaches the middle level. In Qi county there are 73% of the vegetable fields soil in which the content of the available N reaches the extremely low level. In Yangquan and Yuci there are more than 80% of the vegetable fields soil in which the content of the available P reaches the high level. The fertilization technology of the vegetable fields in the middle of Shanxi province should control the nitrogen and phosphor, increase the fertilization of kalium, supplement boron and largely use organic fertilizer like the straw.