| 摘要 |
The present invention relates to a method for preparing a crop protectant containing liquid sulfur, and more specifically, to a method for preparing a crop protectant containing liquid sulfur including: a first mixed liquid preparation step of inputting water into a reactor, adding 20 parts by weight of powdered sulfur and 3 parts by weight of mineral oil based on 100 parts by weight of water, and stirring the same; a sulfur mixed liquid preparation step of adding 17 parts by weight of sodium hydroxide (NaOH) based on 100 parts by weight of water inputted in the first mixed liquid preparation step to the prepared first mixed liquid, and stirring the same; an alginic acid mixed liquid preparation step of mixing 0.5% (w/w) of an alginic acid solution. where an alginic acid having an average molecular weight of 2.5 kDa, with 0.3% (w/w) of calcium chloride (CaCl_2) solution, and stirring the same for 20 minutes; an alginic acid microsphere preparation step of rotating an impeller at 650 rpm by using an attrition mill and grinding the alginic acid mixed liquid, and preparing alginic acid microsphere; and a step of adding the sulfur mixed liquid and the alginic acid microsphere, and stirring the same in order to prepare the crop protectant containing liquid sulfur. |
