The meeting was chaired by Herat Governor Maulana Islam Jar and attended by the governors of Badghis, Ghor, Farah and Nimroz provinces.
UNODC said about 8,000 former poppy-growing households, representing an estimated 56,000 people, are expected to benefit from alternative livelihood programmes.
Officials described synthetic drugs as one of the country's most pressing concerns and said targeted programs have been introduced to combat the problem.