Study on Changes of Soil Salt and Nutrient in Greenhouse of Different Planting Years

作者：Pei Xuexia · 年份：2007 · 被引用次数：5 · 研究领域：Forest, Soil, and Plant Ecology in China

Nutrients sourced vegetable greenhouse soil from Linfen city in Shanxi province were investigated.The nutrient indexes included soil organic matter,available nitrogen,NO-3-N,readily available P,available K and the changes of soil electrical conductivity,dissolvable salt and pH.The results showed that compared with the open field soil the greenhouse soil electrical conductivity and the salt content increased and pH decreased gradually.The content of soil salt in greenhouse of planting 8 a had accumulated to the cucumber's critical point of which obstacles the growth.The soil nutrients accumulated in distinct degrees,especially the readily available P and NO-3-N accumulated heavy.The main reasons caused the accumulation of soil salt and nutrients are the special environment condition of greenhouse and the surfeit use of fertilizer.