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Special high-nitrogen water fertilizer for planting paulownia in ecological restoration of abandoned mines as well as preparation method and spraying method thereof

The invention provides a special high-nitrogen water fertilizer for planting paulownia in ecological restoration of abandoned mines as well as preparation method and spraying method thereof. A controllable fermentation process is used for treating leachate, and the leachate is subjected to anaerobic fermentation and then aerobic fermentation and nitrification process treatment; firstly, organic matters in the leachate are degraded to the required level of the water fertilizer, and secondly, a large amount of ammonia nitrogen in the leachate is biologically converted into nitrate nitrogen required by paulownia growth; then, suspended solids are removed through sedimentation and quartz sand filtration, and finally the high-nitrogen water fertilizer is obtained and used for a paulownia nursery and an annual demonstration forest of the paulownia nursery obtained after tissue culture seedlings are subjected to water and fertilizer integrated spraying and seedling hardening. According to theinvention, resource utilization of the leachate is fully realized, hidden danger of secondary pollution is eliminated, and waste is turned into wealth. The method for preparing the special water fertilizer for paulownia planting in waste mine ecological restoration is low in cost, sufficient and effective nutrient supply can be provided, the utilization efficiency of the water fertilizer is greatly improved, fast growth and high yield of paulownia are promoted, and the yield increase rate of paulownia is ensured.
Owner:WUHAN UNIV OF TECH +1
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