Herbicide

    Herbicide is a kind drug which can kill off weeds or selectively kill off wees. The sodium chlorate, borax, arsenate, trichloroacetic acid can kill any plants. But it has residual effect. So it can not be used in field. Selective herbicide, especially nitrophenol, irgasan, carbamic acid's ramification, is effective. World herbicide has stable development. It mainly develops efficient, low toxicity, broad spectrum and low usage variety. Little environmental pollution disposable finishing agent has become main stream.