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Jiyang providers River sunlight greenhouse of different cultivation years, through the investigation of various greenhouse fertilizer inputs, vegetable type, production, and shed the outer layer of soil nutrient situation of the fertilizer input feature utilization, compared shed inside and outside soil and vegetable crops nutrient differences and frequency distribution analysis of cumulative solar greenhouse plant life and soil nutrient characteristics, curve fitting and of different vegetable greenhouse soil nutrients and planting years to study the dynamic changes in soil nutrient and cause soil salinization and acidification. The results showed that: 1, greenhouse nitrogen, phosphorus and potassium nutrients average invested amount, respectively 2683.6kg hm-2, 1964.9kg · hm-2, 2375.1kg hm-2, the proportion of input 1:0.73:0.89 with fertilizer inputs of nitrogen, phosphorus and potassium, respectively, accounted for 45.6%, 75.4%, and 60.8% of the nutrient. Nitrogen, phosphorus, potassium nutrient inputs from different types of vegetables showed cucumber gt; tomato of gt; bell pepper, Phosphorus inputs high proportion of relatively low proportion that K. The sunlight greenhouse NPK nutrients showed a large number of surplus. The apparent utilization of nitrogen, phosphorus, potassium, 18.6%, 7.3%, and 31.4%, respectively. Vegetable crop fertilizer utilization difference, cucumber, tomato, sweet pepper, nitrogen, phosphorus, potassium utilization was 14.4%, 9.9%, 27.4%; 17.7%, 5.1%, 32.1%; 29.6%, 7.2%, 41.3%. 2, compared with Pengwai soil, sunlight greenhouse soil available nitrogen, available phosphorus, available potassium, organic matter content of the conductivity significantly higher than that outside soil, an increase of 135.3%, 475.2%, 290.1%, 97.7%, 188.7 %, pH showed decreased 0.31 lower than Pengwai soil units. Nutrient frequency distribution curve of a normal distribution. Different vegetable greenhouse soil nutrient content varies from case to nitrogen and conductivity of tomato gt; sweet pepper gt; cucumber, organic matter and pH performance as a cucumber gt; sweet pepper gt; tomato, the available phosphorus cucumber gt; tomato gt ; peppers, available K tomato gt; cucumbers of gt; bell peppers, nutrient frequency distribution curve to fit the normal distribution. Solar greenhouse soil acidification trend, but not obvious. The soil salinization severity, mainly caused by the accumulation of alkaline hydrolysis nitrogen and potassium. reduction of pH and alkaline hydrolysis nitrogen accumulated close. 3, the cumulative laws of the performance of the solar greenhouse soil nutrients and planting years are basically the same, slow rapid accumulation period, 3-4 lives segments of the nutrient accumulation rate in 1-2 years, after minor floating in a stable value soil system, the overall performance of dynamic equilibrium. In addition to the pH of the cumulative negative outwardly other are positive accumulation. A highly significant correlation between the different vegetable greenhouse soil nutrients and cultivation age, and can be used twice or three times a curve fitting. Basal fertilizer into the soil alkali hydrolysable N, available P, K, conductivity is rising rapidly, and organic matter slowly rising, pH decreased slowly vegetables after planting in the soil of nutrients highly enriched. Nutrient levels in the following year basal fertilizer drastic decline after basal fertilizer compared with the previous year, in addition to available phosphorus, pH compared with the previous year, results in reduced basal fertilizer before the alkaline hydrolysis nitrogen, potassium, conductivity, organic matter compared with the previous year have increased, an increase of less than 20% (sweet pepper conductivity increase of 42.3%).
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