日光温室土壤盐分和养分的变化趋势

对种植 1～ 8a的日光温室土壤盐分和养分进行了调查研究 ,结果表明 ,随着日光温室种植年限的延长 ,土壤可溶性盐、电导率、养分含量呈增加趋势 ,酸碱度 (pH)呈降低趋势 ,有机质含量增幅不大 ;土壤速效养分中硝态氮含量过高 ,速效磷含量也很丰富。最后提出了温室土壤培肥和管理措施。

Changing Trend of Soil Salt and Nutrient Content in Greenhouse

With the research on the soil in greenhouse with different planting years,the results showed that the soil soluble salt,available nutrient content and electrical conductivity increased with the prolonged period of planting,while the soil pH droped,the soil organic matter content did not go up much ,nitrate nitrogen in available nutrient was high,the available phosphorus in the soil was abundant. At the end,the measures on the improvement of soil fertility and management were recommended.