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Creation and Application of the Slow Release Fertilizer Materials at Low Cost and Easy degradation

There are three main problems in slow release fertilizer production area, namely low degradability, high cost, low production efficiency. Therefore, the project invented low cost and easily degradable slow release material with weathered coal, coal gauge and clay as raw material. And modern polymer chemical synthesis technology was used to produce low cost and easy degradable slow release fertilizer. Production technics and key production equipments were also developed in the project. All these developments were successively solve the problems of low efficiency of chemical fertilizer and high losses of nutrients. And the developments made large scale continuous production possible. All together 21 invention patents were rewarded in the project. And the technology was in the international leading level in the same area. The progresses of the project would contribute large to national fertilizer industry and scientific and technological advance.

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