Magnetized controlled release fertilizer capable of resisting saline and alkaline land and preparation method of magnetized controlled release fertilizer
A technology for slow-release fertilizers and saline-alkali land, applied in the field of magnetized slow-release fertilizers and their preparation, can solve the problems of reduced utilization rate of chemical fertilizers, loss of effectiveness, environmental pollution, etc., and achieve the goals of reduced solubility, improved absorption capacity, and enhanced cell vitality Effect
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[0019] specific implementation plan
[0020] The present invention will be described in further detail below in conjunction with the following specific embodiments:
[0021] Weigh the following raw materials in parts by weight (kg): soybean meal 270-300, rare earth 8-10, wheat gluten 50-70, copper humate 22-26, straw ash 140-160, potassium sulfate 15-18, Fly ash 80-100, pyrite ash 60-70, tapioca starch 33-37, calcium acetate 6-9, compound biological agent 12-16, appropriate amount of water;
[0022] The composite biological agent includes sulfate-reducing bacteria, isoxiric iron-reducing bacteria and Bacillus subtilis in a ratio of 1:1:2.
[0023] The concrete steps of the preparation of described fertilizer are as follows:
[0024] (1) Put the fly ash in a high-temperature furnace, calcinate at 850-900°C for 20 minutes, take it out and cool it, then put the pyrite ash into the high-temperature furnace, calcinate at 400-500°C for 40 minutes, take it out Cool, mix the two ki...
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