Mushrooms are widely used for diet of the people and protection of their health as they are of great sitological and medical value.
She has tried hard to improve the fertility of soil and establish a scientific cultivation method to increase the production of crops.
The national dignity, patriotism and confidence to outrival others in the sci-tech competition...
To put the agricultural production of the country on a higher scientific footing...
Another large irrigation network was formed in the western area of the country along with the construction of the Hwangju Kindung Waterway.