Greenhouses in North Phyongan Province markedly raised the proportion of fruit vegetable production by putting the rearing of high-yielding cucumber, pepper, tomato and other seedlings and their cultivation according to vegetative stages on a scientific basis. They also increased the production by cultivating functional vegetable crops such as mallow and green cauliflower in a rational way to suit their actual conditions.

South Hamgyong Province has substantially organized the scientific and technological study for raising the level of the working people's skills, directed primary efforts to increasing the fertility of soil and cultivated each kind of fresh vegetables, ensuring thinning out of seeds and application of additional fertilizers and biological pesticides in an effective way.

Nampho City also boosted the vegetable production by positively introducing methods of drip irrigation and other cultivation methods.

Pyongyang City established a ring-shaped rotation production system and brought results by introducing various efficient growth promoters to suit its specific conditions.

The city raised the per-hectare yield by conducting the selection of varieties, stepwise cultivation, cultivating young plants, soil management and environmental management in a sci-tech way and introducing three-dimensional cultivation methods like effective use of greenhouse spaces.