Long-acting fertilizer specially used for dry-farming sweet potatoes and preparation method for long-acting fertilizer
A special sweet potato fertilizer and long-acting technology, which is applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of expensive slow-release long-acting fertilizer, easy loss of common fertilizer, and complicated process, so as to reduce water transpiration and cost The effect of low cost and simple preparation process
Active Publication Date: 2014-05-07
QINGDAO AGRI UNIV
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The invention relates to a long-acting fertilizer specially used for dry-farming sweet potatoes and a preparation method for the long-acting fertilizer. The fertilizer is granular and comprises three layers of structures, namely a fertilizer kernel, a wrapping film coating layer and a water-retaining agent coating layer in sequence from inside to outside. The kernel of the long-acting fertilizer specially used for the dry-farming sweet potatoes contains effective components such as a nitrogen fertilizer, a phosphorus fertilizer, a potassic fertilizer and a composite micro fertilizer which are specially suitable for the sweet potatoes; the wrapping film coating layer controls the speed of water entering a film and controls and regulates release of nutrition; the water-retaining agent coating layer can effectively retain water in soil and rainwater; lateral seepage runoff and water evaporation are alleviated, and front and middle-stage growth of the sweet potatoes is guaranteed. The preparation method for the fertilizer is implemented through one-time spraying; the technically occupied space is small, the equipment investment is small, the preparation process is simple and the energy consumption is low; the wrapping film material is low in cost, so that the price of the fertilizer is greatly reduced.
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Property | Measurement | Unit |
Particle size | 2.5 ~ 3.5 | mm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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