High-efficiency boron-magnesium fertilizer and preparation method thereof
A high-efficiency boron-magnesium fertilizer technology, which is applied in the direction of nitrogen fertilizer, phosphate fertilizer, ammonium salt fertilizer, etc., can solve the problems of not being able to increase production, the nutrient content of boron-magnesium fertilizer is easy to lose with water, and the fertilizer effect cannot be sustained, so as to reduce nutrient loss , Improve leaflet disease and promote growth
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Embodiment 1
[0026] Test material: a high-efficiency boron-magnesium fertilizer provided in this example, the high-efficiency boron-magnesium fertilizer includes the following weight components: boron-magnesium fertilizer 60wt%, polyethylene glycol 5wt% (relative molecular mass is 4000-8000), brassica 2wt% trilactone, 5wt% ammonium molybdate, 5wt% zinc sulfate, 20wt% calcium nitrate, 2wt% manganese sulfate, 5wt% monoammonium phosphate; this high-efficiency boron-magnesium fertilizer is used in conjunction with 15-15-15 compound fertilizer;
[0027] Test time: March 2015-October 2015;
[0028] Test location: Wangjiazhai, Dangyang, Hubei;
[0029] Test crops: citrus;
[0030] Test soil: red soil; (the basic physical and chemical properties of the test soil are: pH 5.32, organic matter 12.79g / kg, alkaline nitrogen 9.33mg / kg, available phosphorus 11.02mg / kg, available potassium 87.5mg / kg)
[0031] Experimental design: base application of 15-15-15 compound fertilizer 50kg / mu + high-efficiency...
Embodiment 2
[0035] It is substantially the same as Example 1, except that the high-efficiency boron-magnesium fertilizer includes the following weight components: boron-magnesium fertilizer 65wt%, polyethylene glycol 5wt%, amine fresh fat 2wt%, ammonium molybdate 3wt%, zinc sulfate 8wt%, calcium nitrate 15wt%, manganese sulfate 3wt%, monoammonium phosphate 3wt%; this high-efficiency boron-magnesium fertilizer is used in conjunction with 15-15-15 compound fertilizer.
Embodiment 3
[0037] Substantially the same as Example 1, the difference is that the high-efficiency boron-magnesium fertilizer includes the following weight components: boron-magnesium fertilizer 70wt%, polyethylene glycol 5wt%, sodium naphthalene acetate 2wt%, ammonium molybdate 2wt%, zinc sulfate 10wt%, calcium nitrate 10wt%, manganese sulfate 5wt%, monoammonium phosphate 1wt%; this high-efficiency boron-magnesium fertilizer is used in conjunction with 15-15-15 compound fertilizer.
[0038] The preparation method of the efficient boron-magnesium fertilizer of present embodiment 1-3 is as follows:
[0039] Step S1: Grind boron-magnesium ore into 200-mesh fine powder, add sulfuric acid at a ratio of 1:5 between mineral powder and acid, and react for 2-5 hours. Cool in a constant temperature tank, crystallize boric acid crystals at 0-20°C, carry out solid-liquid separation, and then carry out second crystallization at 10-30°C to obtain boron-magnesium fertilizer.
[0040] Step S2: Mix boro...
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