Abstract: Disclosed are a high-elongation meta-aramid fiber, a preparation method and an apparatus. The high-elongation meta-aramid fiber is prepared by: adding isophthaloyl chloride to a m-phenylenediamine solution, reacting at a stirring speed of 20-30 r/min, and adjusting the pH of the achieved reaction liquid to obtain a first slurry; adding isophthaloyl chloride to a m-phenylenediamine solution, reacting at a stirring speed of 25-35 r/min, adjusting the pH of the achieved reaction liquid, filtering insoluble matter, adding an initiator and isophthaloyl chloride at a stirring speed of 25-35 r/min for reaction, and adjusting the pH of the achieved reaction liquid to obtain a second slurry; uniformly mixing and then de-foaming the two slurries, and producing the high-elongation meta-aramid fiber through a wet spinning process.

Abstract: Certain embodiments of the present invention provide a method for controlling Athetis lepigone, which comprises contacting Athetis lepigone with Cry1F protein. Aspects of the present invention can achieve control of Athetis lepigone by enabling plants to produce Cry1F protein in vivo, which can be lethal to Athetis lepigone. In still other instances, the method can control Athetis lepigone throughout the growth period of the plants and provide the plants with a full protection. Additionally, the method, in certain embodiments, can be one or more of stable, complete, simple, convenient, economical, pollution-free or residue-free.