Allelochemical slow-release suspension composite material, preparation method and application thereof
A technology of allelochemical substances and composite materials, applied in the direction of botanical equipment and methods, chemical instruments and methods, applications, etc., can solve the problems of inability to achieve sustained and efficient algae inhibition effects, and achieve good application prospects, non-toxic products, and production The effect of simple process
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[0025] The invention provides a preparation method of an allelochemical slow-release suspension composite material, comprising the following steps:
[0026] The biochar is sequentially calcined and acid leached to obtain pretreated biochar;
[0027] The pretreated biochar and the allelochemical are blended and impregnated, and then directly sucked and dried to obtain the slow-release suspension composite material of the allelochemical, and the allelochemical is lactic acid.
[0028] In the invention, the biochar is sequentially calcined and acid leached to obtain the pretreated biochar.
[0029] In the present invention, the biochar is preferably prepared by a method comprising the following steps:
[0030] washing the impurities on the surface of the barley straw, drying and pulverizing in sequence to obtain dry straw powder;
[0031] The dry straw powder is calcined to obtain the biochar.
[0032] In the invention, the impurities on the surface of the barley stalks are wa...
Embodiment 1
[0050] Clean the impurities on the surface of the barley straw, dry it in an oven at a temperature of 100° C. to a constant weight, crush it, and pass it through a 100-mesh sieve. The sieved straw powder is dried and stored for later use. Add the straw powder into the crucible, put it in the muffle furnace, and calcinate at the set temperature for a period of time, then take out the crucible and cool it down to room temperature naturally to obtain biochar.
[0051] Then take 3g of biochar calcined at 500°C for 6h and put it into a beaker filled with 200mL, 50% sulfuric acid, then move the beaker to a magnetic stirrer at 500r / min and stir for 6h. Filter, and finally put into a drying oven at 60°C, and dry for 12 hours to obtain a black powdery pretreated biochar.
[0052] Weigh 3g of the above-mentioned pretreated biochar material and put it into the conical flask, then slowly add 30mL of analytically pure lactic acid allelochemicals into the conical flask through a constant pr...
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