NAA(NA) is an auxin plant growth regulator, in addition to the basic function of the general auxin, but also can promote the formation of plant roots, used to promote seed hair roots, inserted roots and solanaceae roots. It can promote the rapid expansion of fruits and tubers, so it can be used as swelling agent in vegetables and fruit trees. It can improve the rate of flowering and fruit setting, prevent falling flowers and fruit. It can not only improve the yield, improve the quality, promote the flourishing of branches and leaves, and make the plants strong, but also effectively improve the ability of the crops to resist cold, drought, waterlogging, disease, salt and resist stress.
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